Merge tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've introduced native swap file support which can
  exploit DIO, enhanced existing checkpoint=disable feature with
  additional mount option to tune the triggering condition, and allowed
  user to preallocate physical blocks in a pinned file which will be
  useful to avoid f2fs fragmentation in append-only workloads. In
  addition, we've fixed subtle quota corruption issue.

  Enhancements:
   - add swap file support which uses DIO
   - allocate blocks for pinned file
   - allow SSR and mount option to enhance checkpoint=disable
   - enhance IPU IOs
   - add more sanity checks such as memory boundary access

  Bug fixes:
   - quota corruption in very corner case of error-injected SPO case
   - fix root_reserved on remount and some wrong counts
   - add missing fsck flag

  Some patches were also introduced to clean up ambiguous i_flags and
  debugging messages codes"

* tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits)
  f2fs: improve print log in f2fs_sanity_check_ckpt()
  f2fs: avoid out-of-range memory access
  f2fs: fix to avoid long latency during umount
  f2fs: allow all the users to pin a file
  f2fs: support swap file w/ DIO
  f2fs: allocate blocks for pinned file
  f2fs: fix is_idle() check for discard type
  f2fs: add a rw_sem to cover quota flag changes
  f2fs: set SBI_NEED_FSCK for xattr corruption case
  f2fs: use generic EFSBADCRC/EFSCORRUPTED
  f2fs: Use DIV_ROUND_UP() instead of open-coding
  f2fs: print kernel message if filesystem is inconsistent
  f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
  f2fs: avoid get_valid_blocks() for cleanup
  f2fs: ioctl for removing a range from F2FS
  f2fs: only set project inherit bit for directory
  f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
  f2fs: replace ktype default_attrs with default_groups
  f2fs: Add option to limit required GC for checkpoint=disable
  f2fs: Fix accounting for unusable blocks
  ...

21 files changed, 1405 insertions, 773 deletions

diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 91822ce25831..dca326e0ee3e 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -243,3 +243,11 @@ Description:
 		 - Del: echo '[h/c]!extension' > /sys/fs/f2fs/<disk>/extension_list
 		 - [h] means add/del hot file extension
 		 - [c] means add/del cold file extension
+
+What:		/sys/fs/f2fs/<disk>/unusable
+Date		April 2019
+Contact:	"Daniel Rosenberg" <drosen@google.com>
+Description:
+		If checkpoint=disable, it displays the number of blocks that are unusable.
+                If checkpoint=enable it displays the enumber of blocks that would be unusable
+                if checkpoint=disable were to be set.
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index f7b5e4ff0de3..496fa28b2492 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -214,11 +214,22 @@ fsync_mode=%s          Control the policy of fsync. Currently supports "posix",
                        non-atomic files likewise "nobarrier" mount option.
 test_dummy_encryption  Enable dummy encryption, which provides a fake fscrypt
                        context. The fake fscrypt context is used by xfstests.
-checkpoint=%s          Set to "disable" to turn off checkpointing. Set to "enable"
+checkpoint=%s[:%u[%]]     Set to "disable" to turn off checkpointing. Set to "enable"
                        to reenable checkpointing. Is enabled by default. While
                        disabled, any unmounting or unexpected shutdowns will cause
                        the filesystem contents to appear as they did when the
                        filesystem was mounted with that option.
+                       While mounting with checkpoint=disabled, the filesystem must
+                       run garbage collection to ensure that all available space can
+                       be used. If this takes too much time, the mount may return
+                       EAGAIN. You may optionally add a value to indicate how much
+                       of the disk you would be willing to temporarily give up to
+                       avoid additional garbage collection. This can be given as a
+                       number of blocks, or as a percent. For instance, mounting
+                       with checkpoint=disable:100% would always succeed, but it may
+                       hide up to all remaining free space. The actual space that
+                       would be unusable can be viewed at /sys/fs/f2fs/<disk>/unusable
+                       This space is reclaimed once checkpoint=enable.
 
 ================================================================================
 DEBUGFS ENTRIES
@@ -246,11 +257,14 @@ Files in /sys/fs/f2fs/<devname>
 ..............................................................................
  File                         Content
 
- gc_max_sleep_time            This tuning parameter controls the maximum sleep
+ gc_urgent_sleep_time         This parameter controls sleep time for gc_urgent.
+                              500 ms is set by default. See above gc_urgent.
+
+ gc_min_sleep_time            This tuning parameter controls the minimum sleep
                               time for the garbage collection thread. Time is
                               in milliseconds.
 
- gc_min_sleep_time            This tuning parameter controls the minimum sleep
+ gc_max_sleep_time            This tuning parameter controls the maximum sleep
                               time for the garbage collection thread. Time is
                               in milliseconds.
 
@@ -270,9 +284,6 @@ Files in /sys/fs/f2fs/<devname>
                               to 1, background thread starts to do GC by given
                               gc_urgent_sleep_time interval.
 
- gc_urgent_sleep_time         This parameter controls sleep time for gc_urgent.
-                              500 ms is set by default. See above gc_urgent.
-
  reclaim_segments             This parameter controls the number of prefree
                               segments to be reclaimed. If the number of prefree
 			      segments is larger than the number of segments
@@ -287,7 +298,16 @@ Files in /sys/fs/f2fs/<devname>
 			      checkpoint is triggered, and issued during the
 			      checkpoint. By default, it is disabled with 0.
 
- trim_sections                This parameter controls the number of sections
+ discard_granularity	      This parameter controls the granularity of discard
+			      command size. It will issue discard commands iif
+			      the size is larger than given granularity. Its
+			      unit size is 4KB, and 4 (=16KB) is set by default.
+			      The maximum value is 128 (=512KB).
+
+ reserved_blocks	      This parameter indicates the number of blocks that
+			      f2fs reserves internally for root.
+
+ batched_trim_sections	      This parameter controls the number of sections
                               to be trimmed out in batch mode when FITRIM
                               conducts. 32 sections is set by default.
 
@@ -309,11 +329,35 @@ Files in /sys/fs/f2fs/<devname>
 			      the number is less than this value, it triggers
 			      in-place-updates.
 
+ min_seq_blocks		      This parameter controls the threshold to serialize
+			      write IOs issued by multiple threads in parallel.
+
+ min_hot_blocks		      This parameter controls the threshold to allocate
+			      a hot data log for pending data blocks to write.
+
+ min_ssr_sections	      This parameter adds the threshold when deciding
+			      SSR block allocation. If this is large, SSR mode
+			      will be enabled early.
+
+ ram_thresh                   This parameter controls the memory footprint used
+			      by free nids and cached nat entries. By default,
+			      10 is set, which indicates 10 MB / 1 GB RAM.
+
+ ra_nid_pages		      When building free nids, F2FS reads NAT blocks
+			      ahead for speed up. Default is 0.
+
+ dirty_nats_ratio	      Given dirty ratio of cached nat entries, F2FS
+			      determines flushing them in background.
+
  max_victim_search	      This parameter controls the number of trials to
 			      find a victim segment when conducting SSR and
 			      cleaning operations. The default value is 4096
 			      which covers 8GB block address range.
 
+ migration_granularity	      For large-sized sections, F2FS can stop GC given
+			      this granularity instead of reclaiming entire
+			      section.
+
  dir_level                    This parameter controls the directory level to
 			      support large directory. If a directory has a
 			      number of files, it can reduce the file lookup
@@ -321,9 +365,53 @@ Files in /sys/fs/f2fs/<devname>
 			      Otherwise, it needs to decrease this value to
 			      reduce the space overhead. The default value is 0.
 
- ram_thresh                   This parameter controls the memory footprint used
-			      by free nids and cached nat entries. By default,
-			      10 is set, which indicates 10 MB / 1 GB RAM.
+ cp_interval		      F2FS tries to do checkpoint periodically, 60 secs
+			      by default.
+
+ idle_interval		      F2FS detects system is idle, if there's no F2FS
+			      operations during given interval, 5 secs by
+			      default.
+
+ discard_idle_interval	      F2FS detects the discard thread is idle, given
+			      time interval. Default is 5 secs.
+
+ gc_idle_interval	      F2FS detects the GC thread is idle, given time
+			      interval. Default is 5 secs.
+
+ umount_discard_timeout       When unmounting the disk, F2FS waits for finishing
+			      queued discard commands which can take huge time.
+			      This gives time out for it, 5 secs by default.
+
+ iostat_enable		      This controls to enable/disable iostat in F2FS.
+
+ readdir_ra		      This enables/disabled readahead of inode blocks
+			      in readdir, and default is enabled.
+
+ gc_pin_file_thresh	      This indicates how many GC can be failed for the
+			      pinned file. If it exceeds this, F2FS doesn't
+			      guarantee its pinning state. 2048 trials is set
+			      by default.
+
+ extension_list		      This enables to change extension_list for hot/cold
+			      files in runtime.
+
+ inject_rate		      This controls injection rate of arbitrary faults.
+
+ inject_type		      This controls injection type of arbitrary faults.
+
+ dirty_segments 	      This shows # of dirty segments.
+
+ lifetime_write_kbytes	      This shows # of data written to the disk.
+
+ features		      This shows current features enabled on F2FS.
+
+ current_reserved_blocks      This shows # of blocks currently reserved.
+
+ unusable                     If checkpoint=disable, this shows the number of
+                              blocks that are unusable.
+                              If checkpoint=enable it shows the number of blocks
+                              that would be unusable if checkpoint=disable were
+                              to be set.
 
 ================================================================================
 USAGE
@@ -716,3 +804,28 @@ WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
 WRITE_LIFE_NONE       "                        WRITE_LIFE_NONE
 WRITE_LIFE_MEDIUM     "                        WRITE_LIFE_MEDIUM
 WRITE_LIFE_LONG       "                        WRITE_LIFE_LONG
+
+Fallocate(2) Policy
+-------------------
+
+The default policy follows the below posix rule.
+
+Allocating disk space
+    The default operation (i.e., mode is zero) of fallocate() allocates
+    the disk space within the range specified by offset and len.  The
+    file size (as reported by stat(2)) will be changed if offset+len is
+    greater than the file size.  Any subregion within the range specified
+    by offset and len that did not contain data before the call will be
+    initialized to zero.  This default behavior closely resembles the
+    behavior of the posix_fallocate(3) library function, and is intended
+    as a method of optimally implementing that function.
+
+However, once F2FS receives ioctl(fd, F2FS_IOC_SET_PIN_FILE) in prior to
+fallocate(fd, DEFAULT_MODE), it allocates on-disk blocks addressess having
+zero or random data, which is useful to the below scenario where:
+ 1. create(fd)
+ 2. ioctl(fd, F2FS_IOC_SET_PIN_FILE)
+ 3. fallocate(fd, 0, 0, size)
+ 4. address = fibmap(fd, offset)
+ 5. open(blkdev)
+ 6. write(blkdev, address)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index ed70b68b2b38..a0eef95b9e0e 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -146,8 +146,8 @@ static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
 
 	exist = f2fs_test_bit(offset, se->cur_valid_map);
 	if (!exist && type == DATA_GENERIC_ENHANCE) {
-		f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error "
-			"blkaddr:%u, sit bitmap:%d", blkaddr, exist);
+		f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
+			 blkaddr, exist);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		WARN_ON(1);
 	}
@@ -184,8 +184,8 @@ bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
 	case DATA_GENERIC_ENHANCE_READ:
 		if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
 				blkaddr < MAIN_BLKADDR(sbi))) {
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"access invalid blkaddr:%u", blkaddr);
+			f2fs_warn(sbi, "access invalid blkaddr:%u",
+				  blkaddr);
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
 			WARN_ON(1);
 			return false;
@@ -657,9 +657,8 @@ static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
 
 err_out:
 	set_sbi_flag(sbi, SBI_NEED_FSCK);
-	f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: orphan failed (ino=%x), run fsck to fix.",
-			__func__, ino);
+	f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
+		  __func__, ino);
 	return err;
 }
 
@@ -676,13 +675,12 @@ int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
 		return 0;
 
 	if (bdev_read_only(sbi->sb->s_bdev)) {
-		f2fs_msg(sbi->sb, KERN_INFO, "write access "
-			"unavailable, skipping orphan cleanup");
+		f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
 		return 0;
 	}
 
 	if (s_flags & SB_RDONLY) {
-		f2fs_msg(sbi->sb, KERN_INFO, "orphan cleanup on readonly fs");
+		f2fs_info(sbi, "orphan cleanup on readonly fs");
 		sbi->sb->s_flags &= ~SB_RDONLY;
 	}
 
@@ -827,26 +825,14 @@ static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
 	if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
 			crc_offset > CP_CHKSUM_OFFSET) {
 		f2fs_put_page(*cp_page, 1);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"invalid crc_offset: %zu", crc_offset);
+		f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
 		return -EINVAL;
 	}
 
-	if (__is_set_ckpt_flags(*cp_block, CP_LARGE_NAT_BITMAP_FLAG)) {
-		if (crc_offset != CP_MIN_CHKSUM_OFFSET) {
-			f2fs_put_page(*cp_page, 1);
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"layout of large_nat_bitmap is deprecated, "
-				"run fsck to repair, chksum_offset: %zu",
-				crc_offset);
-			return -EINVAL;
-		}
-	}
-
 	crc = f2fs_checkpoint_chksum(sbi, *cp_block);
 	if (crc != cur_cp_crc(*cp_block)) {
 		f2fs_put_page(*cp_page, 1);
-		f2fs_msg(sbi->sb, KERN_WARNING, "invalid crc value");
+		f2fs_warn(sbi, "invalid crc value");
 		return -EINVAL;
 	}
 
@@ -869,9 +855,8 @@ static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
 
 	if (le32_to_cpu(cp_block->cp_pack_total_block_count) >
 					sbi->blocks_per_seg) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"invalid cp_pack_total_block_count:%u",
-			le32_to_cpu(cp_block->cp_pack_total_block_count));
+		f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
+			  le32_to_cpu(cp_block->cp_pack_total_block_count));
 		goto invalid_cp;
 	}
 	pre_version = *version;
@@ -905,6 +890,7 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	unsigned int cp_blks = 1 + __cp_payload(sbi);
 	block_t cp_blk_no;
 	int i;
+	int err;
 
 	sbi->ckpt = f2fs_kzalloc(sbi, array_size(blk_size, cp_blks),
 				 GFP_KERNEL);
@@ -932,6 +918,7 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	} else if (cp2) {
 		cur_page = cp2;
 	} else {
+		err = -EFSCORRUPTED;
 		goto fail_no_cp;
 	}
 
@@ -944,8 +931,10 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 		sbi->cur_cp_pack = 2;
 
 	/* Sanity checking of checkpoint */
-	if (f2fs_sanity_check_ckpt(sbi))
+	if (f2fs_sanity_check_ckpt(sbi)) {
+		err = -EFSCORRUPTED;
 		goto free_fail_no_cp;
+	}
 
 	if (cp_blks <= 1)
 		goto done;
@@ -959,8 +948,10 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 		unsigned char *ckpt = (unsigned char *)sbi->ckpt;
 
 		cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
-		if (IS_ERR(cur_page))
+		if (IS_ERR(cur_page)) {
+			err = PTR_ERR(cur_page);
 			goto free_fail_no_cp;
+		}
 		sit_bitmap_ptr = page_address(cur_page);
 		memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
 		f2fs_put_page(cur_page, 1);
@@ -975,7 +966,7 @@ free_fail_no_cp:
 	f2fs_put_page(cp2, 1);
 fail_no_cp:
 	kvfree(sbi->ckpt);
-	return -EINVAL;
+	return err;
 }
 
 static void __add_dirty_inode(struct inode *inode, enum inode_type type)
@@ -1142,17 +1133,24 @@ static void __prepare_cp_block(struct f2fs_sb_info *sbi)
 
 static bool __need_flush_quota(struct f2fs_sb_info *sbi)
 {
+	bool ret = false;
+
 	if (!is_journalled_quota(sbi))
 		return false;
-	if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
-		return false;
-	if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
-		return false;
-	if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH))
-		return true;
-	if (get_pages(sbi, F2FS_DIRTY_QDATA))
-		return true;
-	return false;
+
+	down_write(&sbi->quota_sem);
+	if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
+		ret = false;
+	} else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
+		ret = false;
+	} else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
+		clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
+		ret = true;
+	} else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
+		ret = true;
+	}
+	up_write(&sbi->quota_sem);
+	return ret;
 }
 
 /*
@@ -1171,26 +1169,22 @@ static int block_operations(struct f2fs_sb_info *sbi)
 	blk_start_plug(&plug);
 
 retry_flush_quotas:
+	f2fs_lock_all(sbi);
 	if (__need_flush_quota(sbi)) {
 		int locked;
 
 		if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
 			set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
-			f2fs_lock_all(sbi);
+			set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
 			goto retry_flush_dents;
 		}
-		clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
+		f2fs_unlock_all(sbi);
 
 		/* only failed during mount/umount/freeze/quotactl */
 		locked = down_read_trylock(&sbi->sb->s_umount);
 		f2fs_quota_sync(sbi->sb, -1);
 		if (locked)
 			up_read(&sbi->sb->s_umount);
-	}
-
-	f2fs_lock_all(sbi);
-	if (__need_flush_quota(sbi)) {
-		f2fs_unlock_all(sbi);
 		cond_resched();
 		goto retry_flush_quotas;
 	}
@@ -1212,12 +1206,6 @@ retry_flush_dents:
 	 */
 	down_write(&sbi->node_change);
 
-	if (__need_flush_quota(sbi)) {
-		up_write(&sbi->node_change);
-		f2fs_unlock_all(sbi);
-		goto retry_flush_quotas;
-	}
-
 	if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
 		up_write(&sbi->node_change);
 		f2fs_unlock_all(sbi);
@@ -1313,7 +1301,8 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	else
 		__clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
 
-	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
+	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) ||
+		is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
 		__set_ckpt_flags(ckpt, CP_FSCK_FLAG);
 
 	if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
@@ -1328,10 +1317,8 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 
 	if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
 		__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
-	/*
-	 * TODO: we count on fsck.f2fs to clear this flag until we figure out
-	 * missing cases which clear it incorrectly.
-	 */
+	else
+		__clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
 
 	if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
 		__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
@@ -1571,8 +1558,7 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
 		if (cpc->reason != CP_PAUSE)
 			return 0;
-		f2fs_msg(sbi->sb, KERN_WARNING,
-				"Start checkpoint disabled!");
+		f2fs_warn(sbi, "Start checkpoint disabled!");
 	}
 	mutex_lock(&sbi->cp_mutex);
 
@@ -1638,8 +1624,7 @@ stop:
 	stat_inc_cp_count(sbi->stat_info);
 
 	if (cpc->reason & CP_RECOVERY)
-		f2fs_msg(sbi->sb, KERN_NOTICE,
-			"checkpoint: version = %llx", ckpt_ver);
+		f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
 
 	/* do checkpoint periodically */
 	f2fs_update_time(sbi, CP_TIME);
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index a546ac8685ea..0ca530afc684 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -14,6 +14,7 @@
 #include <linux/pagevec.h>
 #include <linux/blkdev.h>
 #include <linux/bio.h>
+#include <linux/swap.h>
 #include <linux/prefetch.h>
 #include <linux/uio.h>
 #include <linux/cleancache.h>
@@ -54,7 +55,7 @@ static bool __is_cp_guaranteed(struct page *page)
 
 static enum count_type __read_io_type(struct page *page)
 {
-	struct address_space *mapping = page->mapping;
+	struct address_space *mapping = page_file_mapping(page);
 
 	if (mapping) {
 		struct inode *inode = mapping->host;
@@ -347,20 +348,20 @@ static void __submit_merged_bio(struct f2fs_bio_info *io)
 	io->bio = NULL;
 }
 
-static bool __has_merged_page(struct f2fs_bio_info *io, struct inode *inode,
+static bool __has_merged_page(struct bio *bio, struct inode *inode,
 						struct page *page, nid_t ino)
 {
 	struct bio_vec *bvec;
 	struct page *target;
 	struct bvec_iter_all iter_all;
 
-	if (!io->bio)
+	if (!bio)
 		return false;
 
 	if (!inode && !page && !ino)
 		return true;
 
-	bio_for_each_segment_all(bvec, io->bio, iter_all) {
+	bio_for_each_segment_all(bvec, bio, iter_all) {
 
 		target = bvec->bv_page;
 		if (fscrypt_is_bounce_page(target))
@@ -410,7 +411,7 @@ static void __submit_merged_write_cond(struct f2fs_sb_info *sbi,
 			struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
 
 			down_read(&io->io_rwsem);
-			ret = __has_merged_page(io, inode, page, ino);
+			ret = __has_merged_page(io->bio, inode, page, ino);
 			up_read(&io->io_rwsem);
 		}
 		if (ret)
@@ -454,7 +455,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
 			fio->is_por ? META_POR : (__is_meta_io(fio) ?
 			META_GENERIC : DATA_GENERIC_ENHANCE)))
-		return -EFAULT;
+		return -EFSCORRUPTED;
 
 	trace_f2fs_submit_page_bio(page, fio);
 	f2fs_trace_ios(fio, 0);
@@ -480,6 +481,61 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
 	return 0;
 }
 
+int f2fs_merge_page_bio(struct f2fs_io_info *fio)
+{
+	struct bio *bio = *fio->bio;
+	struct page *page = fio->encrypted_page ?
+			fio->encrypted_page : fio->page;
+
+	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
+			__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))
+		return -EFSCORRUPTED;
+
+	trace_f2fs_submit_page_bio(page, fio);
+	f2fs_trace_ios(fio, 0);
+
+	if (bio && (*fio->last_block + 1 != fio->new_blkaddr ||
+			!__same_bdev(fio->sbi, fio->new_blkaddr, bio))) {
+		__submit_bio(fio->sbi, bio, fio->type);
+		bio = NULL;
+	}
+alloc_new:
+	if (!bio) {
+		bio = __bio_alloc(fio->sbi, fio->new_blkaddr, fio->io_wbc,
+				BIO_MAX_PAGES, false, fio->type, fio->temp);
+		bio_set_op_attrs(bio, fio->op, fio->op_flags);
+	}
+
+	if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
+		__submit_bio(fio->sbi, bio, fio->type);
+		bio = NULL;
+		goto alloc_new;
+	}
+
+	if (fio->io_wbc)
+		wbc_account_io(fio->io_wbc, page, PAGE_SIZE);
+
+	inc_page_count(fio->sbi, WB_DATA_TYPE(page));
+
+	*fio->last_block = fio->new_blkaddr;
+	*fio->bio = bio;
+
+	return 0;
+}
+
+static void f2fs_submit_ipu_bio(struct f2fs_sb_info *sbi, struct bio **bio,
+							struct page *page)
+{
+	if (!bio)
+		return;
+
+	if (!__has_merged_page(*bio, NULL, page, 0))
+		return;
+
+	__submit_bio(sbi, *bio, DATA);
+	*bio = NULL;
+}
+
 void f2fs_submit_page_write(struct f2fs_io_info *fio)
 {
 	struct f2fs_sb_info *sbi = fio->sbi;
@@ -733,7 +789,7 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 		dn.data_blkaddr = ei.blk + index - ei.fofs;
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto put_err;
 		}
 		goto got_it;
@@ -753,7 +809,7 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 			!f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
 						dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE)) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto put_err;
 	}
 got_it:
@@ -1099,7 +1155,7 @@ next_block:
 
 	if (__is_valid_data_blkaddr(blkaddr) &&
 		!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto sync_out;
 	}
 
@@ -1529,7 +1585,7 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page,
 	sector_t block_nr;
 	int ret = 0;
 
-	block_in_file = (sector_t)page->index;
+	block_in_file = (sector_t)page_index(page);
 	last_block = block_in_file + nr_pages;
 	last_block_in_file = (i_size_read(inode) + blocksize - 1) >>
 							blkbits;
@@ -1562,14 +1618,15 @@ got_it:
 		block_nr = map->m_pblk + block_in_file - map->m_lblk;
 		SetPageMappedToDisk(page);
 
-		if (!PageUptodate(page) && !cleancache_get_page(page)) {
+		if (!PageUptodate(page) && (!PageSwapCache(page) &&
+					!cleancache_get_page(page))) {
 			SetPageUptodate(page);
 			goto confused;
 		}
 
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
 						DATA_GENERIC_ENHANCE_READ)) {
-			ret = -EFAULT;
+			ret = -EFSCORRUPTED;
 			goto out;
 		}
 	} else {
@@ -1660,7 +1717,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
 			prefetchw(&page->flags);
 			list_del(&page->lru);
 			if (add_to_page_cache_lru(page, mapping,
-						  page->index,
+						  page_index(page),
 						  readahead_gfp_mask(mapping)))
 				goto next_page;
 		}
@@ -1684,7 +1741,7 @@ next_page:
 
 static int f2fs_read_data_page(struct file *file, struct page *page)
 {
-	struct inode *inode = page->mapping->host;
+	struct inode *inode = page_file_mapping(page)->host;
 	int ret = -EAGAIN;
 
 	trace_f2fs_readpage(page, DATA);
@@ -1693,7 +1750,8 @@ static int f2fs_read_data_page(struct file *file, struct page *page)
 	if (f2fs_has_inline_data(inode))
 		ret = f2fs_read_inline_data(inode, page);
 	if (ret == -EAGAIN)
-		ret = f2fs_mpage_readpages(page->mapping, NULL, page, 1, false);
+		ret = f2fs_mpage_readpages(page_file_mapping(page),
+						NULL, page, 1, false);
 	return ret;
 }
 
@@ -1851,7 +1909,7 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 
 		if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
 						DATA_GENERIC_ENHANCE))
-			return -EFAULT;
+			return -EFSCORRUPTED;
 
 		ipu_force = true;
 		fio->need_lock = LOCK_DONE;
@@ -1878,7 +1936,7 @@ got_it:
 	if (__is_valid_data_blkaddr(fio->old_blkaddr) &&
 		!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
 						DATA_GENERIC_ENHANCE)) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto out_writepage;
 	}
 	/*
@@ -1946,6 +2004,8 @@ out:
 }
 
 static int __write_data_page(struct page *page, bool *submitted,
+				struct bio **bio,
+				sector_t *last_block,
 				struct writeback_control *wbc,
 				enum iostat_type io_type)
 {
@@ -1971,6 +2031,8 @@ static int __write_data_page(struct page *page, bool *submitted,
 		.need_lock = LOCK_RETRY,
 		.io_type = io_type,
 		.io_wbc = wbc,
+		.bio = bio,
+		.last_block = last_block,
 	};
 
 	trace_f2fs_writepage(page, DATA);
@@ -2069,10 +2131,13 @@ out:
 
 	unlock_page(page);
 	if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) &&
-					!F2FS_I(inode)->cp_task)
+					!F2FS_I(inode)->cp_task) {
+		f2fs_submit_ipu_bio(sbi, bio, page);
 		f2fs_balance_fs(sbi, need_balance_fs);
+	}
 
 	if (unlikely(f2fs_cp_error(sbi))) {
+		f2fs_submit_ipu_bio(sbi, bio, page);
 		f2fs_submit_merged_write(sbi, DATA);
 		submitted = NULL;
 	}
@@ -2099,7 +2164,7 @@ redirty_out:
 static int f2fs_write_data_page(struct page *page,
 					struct writeback_control *wbc)
 {
-	return __write_data_page(page, NULL, wbc, FS_DATA_IO);
+	return __write_data_page(page, NULL, NULL, NULL, wbc, FS_DATA_IO);
 }
 
 /*
@@ -2115,6 +2180,8 @@ static int f2fs_write_cache_pages(struct address_space *mapping,
 	int done = 0;
 	struct pagevec pvec;
 	struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
+	struct bio *bio = NULL;
+	sector_t last_block;
 	int nr_pages;
 	pgoff_t uninitialized_var(writeback_index);
 	pgoff_t index;
@@ -2191,17 +2258,20 @@ continue_unlock:
 			}
 
 			if (PageWriteback(page)) {
-				if (wbc->sync_mode != WB_SYNC_NONE)
+				if (wbc->sync_mode != WB_SYNC_NONE) {
 					f2fs_wait_on_page_writeback(page,
 							DATA, true, true);
-				else
+					f2fs_submit_ipu_bio(sbi, &bio, page);
+				} else {
 					goto continue_unlock;
+				}
 			}
 
 			if (!clear_page_dirty_for_io(page))
 				goto continue_unlock;
 
-			ret = __write_data_page(page, &submitted, wbc, io_type);
+			ret = __write_data_page(page, &submitted, &bio,
+					&last_block, wbc, io_type);
 			if (unlikely(ret)) {
 				/*
 				 * keep nr_to_write, since vfs uses this to
@@ -2250,6 +2320,9 @@ continue_unlock:
 	if (nwritten)
 		f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
 								NULL, 0, DATA);
+	/* submit cached bio of IPU write */
+	if (bio)
+		__submit_bio(sbi, bio, DATA);
 
 	return ret;
 }
@@ -2261,6 +2334,9 @@ static inline bool __should_serialize_io(struct inode *inode,
 		return false;
 	if (IS_NOQUOTA(inode))
 		return false;
+	/* to avoid deadlock in path of data flush */
+	if (F2FS_I(inode)->cp_task)
+		return false;
 	if (wbc->sync_mode != WB_SYNC_ALL)
 		return true;
 	if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks)
@@ -2532,7 +2608,7 @@ repeat:
 	} else {
 		if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
 				DATA_GENERIC_ENHANCE_READ)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto fail;
 		}
 		err = f2fs_submit_page_read(inode, page, blkaddr);
@@ -2777,13 +2853,14 @@ int f2fs_release_page(struct page *page, gfp_t wait)
 
 static int f2fs_set_data_page_dirty(struct page *page)
 {
-	struct address_space *mapping = page->mapping;
-	struct inode *inode = mapping->host;
+	struct inode *inode = page_file_mapping(page)->host;
 
 	trace_f2fs_set_page_dirty(page, DATA);
 
 	if (!PageUptodate(page))
 		SetPageUptodate(page);
+	if (PageSwapCache(page))
+		return __set_page_dirty_nobuffers(page);
 
 	if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) {
 		if (!IS_ATOMIC_WRITTEN_PAGE(page)) {
@@ -2875,6 +2952,126 @@ int f2fs_migrate_page(struct address_space *mapping,
 }
 #endif
 
+#ifdef CONFIG_SWAP
+/* Copied from generic_swapfile_activate() to check any holes */
+static int check_swap_activate(struct file *swap_file, unsigned int max)
+{
+	struct address_space *mapping = swap_file->f_mapping;
+	struct inode *inode = mapping->host;
+	unsigned blocks_per_page;
+	unsigned long page_no;
+	unsigned blkbits;
+	sector_t probe_block;
+	sector_t last_block;
+	sector_t lowest_block = -1;
+	sector_t highest_block = 0;
+
+	blkbits = inode->i_blkbits;
+	blocks_per_page = PAGE_SIZE >> blkbits;
+
+	/*
+	 * Map all the blocks into the extent list.  This code doesn't try
+	 * to be very smart.
+	 */
+	probe_block = 0;
+	page_no = 0;
+	last_block = i_size_read(inode) >> blkbits;
+	while ((probe_block + blocks_per_page) <= last_block && page_no < max) {
+		unsigned block_in_page;
+		sector_t first_block;
+
+		cond_resched();
+
+		first_block = bmap(inode, probe_block);
+		if (first_block == 0)
+			goto bad_bmap;
+
+		/*
+		 * It must be PAGE_SIZE aligned on-disk
+		 */
+		if (first_block & (blocks_per_page - 1)) {
+			probe_block++;
+			goto reprobe;
+		}
+
+		for (block_in_page = 1; block_in_page < blocks_per_page;
+					block_in_page++) {
+			sector_t block;
+
+			block = bmap(inode, probe_block + block_in_page);
+			if (block == 0)
+				goto bad_bmap;
+			if (block != first_block + block_in_page) {
+				/* Discontiguity */
+				probe_block++;
+				goto reprobe;
+			}
+		}
+
+		first_block >>= (PAGE_SHIFT - blkbits);
+		if (page_no) {	/* exclude the header page */
+			if (first_block < lowest_block)
+				lowest_block = first_block;
+			if (first_block > highest_block)
+				highest_block = first_block;
+		}
+
+		page_no++;
+		probe_block += blocks_per_page;
+reprobe:
+		continue;
+	}
+	return 0;
+
+bad_bmap:
+	pr_err("swapon: swapfile has holes\n");
+	return -EINVAL;
+}
+
+static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
+				sector_t *span)
+{
+	struct inode *inode = file_inode(file);
+	int ret;
+
+	if (!S_ISREG(inode->i_mode))
+		return -EINVAL;
+
+	if (f2fs_readonly(F2FS_I_SB(inode)->sb))
+		return -EROFS;
+
+	ret = f2fs_convert_inline_inode(inode);
+	if (ret)
+		return ret;
+
+	ret = check_swap_activate(file, sis->max);
+	if (ret)
+		return ret;
+
+	set_inode_flag(inode, FI_PIN_FILE);
+	f2fs_precache_extents(inode);
+	f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
+	return 0;
+}
+
+static void f2fs_swap_deactivate(struct file *file)
+{
+	struct inode *inode = file_inode(file);
+
+	clear_inode_flag(inode, FI_PIN_FILE);
+}
+#else
+static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
+				sector_t *span)
+{
+	return -EOPNOTSUPP;
+}
+
+static void f2fs_swap_deactivate(struct file *file)
+{
+}
+#endif
+
 const struct address_space_operations f2fs_dblock_aops = {
 	.readpage	= f2fs_read_data_page,
 	.readpages	= f2fs_read_data_pages,
@@ -2887,6 +3084,8 @@ const struct address_space_operations f2fs_dblock_aops = {
 	.releasepage	= f2fs_release_page,
 	.direct_IO	= f2fs_direct_IO,
 	.bmap		= f2fs_bmap,
+	.swap_activate  = f2fs_swap_activate,
+	.swap_deactivate = f2fs_swap_deactivate,
 #ifdef CONFIG_MIGRATION
 	.migratepage    = f2fs_migrate_page,
 #endif
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 99e9a5c37b71..7706049d23bf 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -27,8 +27,15 @@ static DEFINE_MUTEX(f2fs_stat_mutex);
 static void update_general_status(struct f2fs_sb_info *sbi)
 {
 	struct f2fs_stat_info *si = F2FS_STAT(sbi);
+	struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
 	int i;
 
+	/* these will be changed if online resize is done */
+	si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
+	si->main_area_sections = le32_to_cpu(raw_super->section_count);
+	si->main_area_zones = si->main_area_sections /
+				le32_to_cpu(raw_super->secs_per_zone);
+
 	/* validation check of the segment numbers */
 	si->hit_largest = atomic64_read(&sbi->read_hit_largest);
 	si->hit_cached = atomic64_read(&sbi->read_hit_cached);
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 59bc46017855..85a1528f319f 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -218,9 +218,8 @@ struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
 
 	max_depth = F2FS_I(dir)->i_current_depth;
 	if (unlikely(max_depth > MAX_DIR_HASH_DEPTH)) {
-		f2fs_msg(F2FS_I_SB(dir)->sb, KERN_WARNING,
-				"Corrupted max_depth of %lu: %u",
-				dir->i_ino, max_depth);
+		f2fs_warn(F2FS_I_SB(dir), "Corrupted max_depth of %lu: %u",
+			  dir->i_ino, max_depth);
 		max_depth = MAX_DIR_HASH_DEPTH;
 		f2fs_i_depth_write(dir, max_depth);
 	}
@@ -816,11 +815,10 @@ int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
 		bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
 		if (unlikely(bit_pos > d->max ||
 				le16_to_cpu(de->name_len) > F2FS_NAME_LEN)) {
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"%s: corrupted namelen=%d, run fsck to fix.",
-				__func__, le16_to_cpu(de->name_len));
+			f2fs_warn(sbi, "%s: corrupted namelen=%d, run fsck to fix.",
+				  __func__, le16_to_cpu(de->name_len));
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			err = -EINVAL;
+			err = -EFSCORRUPTED;
 			goto out;
 		}
 
@@ -828,8 +826,8 @@ int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
 			int save_len = fstr->len;
 
 			err = fscrypt_fname_disk_to_usr(d->inode,
-						(u32)de->hash_code, 0,
-						&de_name, fstr);
+						(u32)le32_to_cpu(de->hash_code),
+						0, &de_name, fstr);
 			if (err)
 				goto out;
 
diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c
index caf77fe8ac07..e60078460ad1 100644
--- a/fs/f2fs/extent_cache.c
+++ b/fs/f2fs/extent_cache.c
@@ -184,10 +184,9 @@ bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
 		next_re = rb_entry(next, struct rb_entry, rb_node);
 
 		if (cur_re->ofs + cur_re->len > next_re->ofs) {
-			f2fs_msg(sbi->sb, KERN_INFO, "inconsistent rbtree, "
-				"cur(%u, %u) next(%u, %u)",
-				cur_re->ofs, cur_re->len,
-				next_re->ofs, next_re->len);
+			f2fs_info(sbi, "inconsistent rbtree, cur(%u, %u) next(%u, %u)",
+				  cur_re->ofs, cur_re->len,
+				  next_re->ofs, next_re->len);
 			return false;
 		}
 
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 06b89a9862ab..17382da7f0bd 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -136,6 +136,9 @@ struct f2fs_mount_info {
 	int alloc_mode;			/* segment allocation policy */
 	int fsync_mode;			/* fsync policy */
 	bool test_dummy_encryption;	/* test dummy encryption */
+	block_t unusable_cap;		/* Amount of space allowed to be
+					 * unusable when disabling checkpoint
+					 */
 };
 
 #define F2FS_FEATURE_ENCRYPT		0x0001
@@ -412,6 +415,7 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal,
 #define F2FS_IOC_SET_PIN_FILE		_IOW(F2FS_IOCTL_MAGIC, 13, __u32)
 #define F2FS_IOC_GET_PIN_FILE		_IOR(F2FS_IOCTL_MAGIC, 14, __u32)
 #define F2FS_IOC_PRECACHE_EXTENTS	_IO(F2FS_IOCTL_MAGIC, 15)
+#define F2FS_IOC_RESIZE_FS		_IOW(F2FS_IOCTL_MAGIC, 16, __u64)
 
 #define F2FS_IOC_SET_ENCRYPTION_POLICY	FS_IOC_SET_ENCRYPTION_POLICY
 #define F2FS_IOC_GET_ENCRYPTION_POLICY	FS_IOC_GET_ENCRYPTION_POLICY
@@ -476,8 +480,8 @@ static inline int get_inline_xattr_addrs(struct inode *inode);
 #define NR_INLINE_DENTRY(inode)	(MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
 				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
 				BITS_PER_BYTE + 1))
-#define INLINE_DENTRY_BITMAP_SIZE(inode)	((NR_INLINE_DENTRY(inode) + \
-					BITS_PER_BYTE - 1) / BITS_PER_BYTE)
+#define INLINE_DENTRY_BITMAP_SIZE(inode) \
+	DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
 #define INLINE_RESERVED_SIZE(inode)	(MAX_INLINE_DATA(inode) - \
 				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
 				NR_INLINE_DENTRY(inode) + \
@@ -1052,6 +1056,8 @@ struct f2fs_io_info {
 	bool retry;		/* need to reallocate block address */
 	enum iostat_type io_type;	/* io type */
 	struct writeback_control *io_wbc; /* writeback control */
+	struct bio **bio;		/* bio for ipu */
+	sector_t *last_block;		/* last block number in bio */
 	unsigned char version;		/* version of the node */
 };
 
@@ -1111,6 +1117,7 @@ enum {
 	SBI_QUOTA_NEED_FLUSH,			/* need to flush quota info in CP */
 	SBI_QUOTA_SKIP_FLUSH,			/* skip flushing quota in current CP */
 	SBI_QUOTA_NEED_REPAIR,			/* quota file may be corrupted */
+	SBI_IS_RESIZEFS,			/* resizefs is in process */
 };
 
 enum {
@@ -1207,6 +1214,7 @@ struct f2fs_sb_info {
 	/* for inode management */
 	struct list_head inode_list[NR_INODE_TYPE];	/* dirty inode list */
 	spinlock_t inode_lock[NR_INODE_TYPE];	/* for dirty inode list lock */
+	struct mutex flush_lock;		/* for flush exclusion */
 
 	/* for extent tree cache */
 	struct radix_tree_root extent_tree_root;/* cache extent cache entries */
@@ -1230,6 +1238,7 @@ struct f2fs_sb_info {
 	unsigned int segs_per_sec;		/* segments per section */
 	unsigned int secs_per_zone;		/* sections per zone */
 	unsigned int total_sections;		/* total section count */
+	struct mutex resize_mutex;		/* for resize exclusion */
 	unsigned int total_node_count;		/* total node block count */
 	unsigned int total_valid_node_count;	/* valid node block count */
 	loff_t max_file_blocks;			/* max block index of file */
@@ -1247,6 +1256,7 @@ struct f2fs_sb_info {
 	block_t unusable_block_count;		/* # of blocks saved by last cp */
 
 	unsigned int nquota_files;		/* # of quota sysfile */
+	struct rw_semaphore quota_sem;		/* blocking cp for flags */
 
 	/* # of pages, see count_type */
 	atomic_t nr_pages[NR_COUNT_TYPE];
@@ -1488,7 +1498,7 @@ static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
 
 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
 {
-	return F2FS_M_SB(page->mapping);
+	return F2FS_M_SB(page_file_mapping(page));
 }
 
 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
@@ -1766,8 +1776,12 @@ static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
 
 	if (!__allow_reserved_blocks(sbi, inode, true))
 		avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
-	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
-		avail_user_block_count -= sbi->unusable_block_count;
+	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
+		if (avail_user_block_count > sbi->unusable_block_count)
+			avail_user_block_count -= sbi->unusable_block_count;
+		else
+			avail_user_block_count = 0;
+	}
 	if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
 		diff = sbi->total_valid_block_count - avail_user_block_count;
 		if (diff > *count)
@@ -1795,7 +1809,20 @@ enospc:
 	return -ENOSPC;
 }
 
-void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
+__printf(2, 3)
+void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
+
+#define f2fs_err(sbi, fmt, ...)						\
+	f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
+#define f2fs_warn(sbi, fmt, ...)					\
+	f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
+#define f2fs_notice(sbi, fmt, ...)					\
+	f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
+#define f2fs_info(sbi, fmt, ...)					\
+	f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
+#define f2fs_debug(sbi, fmt, ...)					\
+	f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
+
 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
 						struct inode *inode,
 						block_t count)
@@ -1811,11 +1838,10 @@ static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
 					sbi->current_reserved_blocks + count);
 	spin_unlock(&sbi->stat_lock);
 	if (unlikely(inode->i_blocks < sectors)) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
-			inode->i_ino,
-			(unsigned long long)inode->i_blocks,
-			(unsigned long long)sectors);
+		f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
+			  inode->i_ino,
+			  (unsigned long long)inode->i_blocks,
+			  (unsigned long long)sectors);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		return;
 	}
@@ -1967,7 +1993,7 @@ static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
 					struct inode *inode, bool is_inode)
 {
 	block_t	valid_block_count;
-	unsigned int valid_node_count;
+	unsigned int valid_node_count, user_block_count;
 	int err;
 
 	if (is_inode) {
@@ -1994,10 +2020,11 @@ static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
 
 	if (!__allow_reserved_blocks(sbi, inode, false))
 		valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
+	user_block_count = sbi->user_block_count;
 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
-		valid_block_count += sbi->unusable_block_count;
+		user_block_count -= sbi->unusable_block_count;
 
-	if (unlikely(valid_block_count > sbi->user_block_count)) {
+	if (unlikely(valid_block_count > user_block_count)) {
 		spin_unlock(&sbi->stat_lock);
 		goto enospc;
 	}
@@ -2052,10 +2079,9 @@ static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
 		dquot_free_inode(inode);
 	} else {
 		if (unlikely(inode->i_blocks == 0)) {
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"Inconsistent i_blocks, ino:%lu, iblocks:%llu",
-				inode->i_ino,
-				(unsigned long long)inode->i_blocks);
+			f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu",
+				  inode->i_ino,
+				  (unsigned long long)inode->i_blocks);
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
 			return;
 		}
@@ -2191,6 +2217,9 @@ static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
 
 static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
 {
+	if (sbi->gc_mode == GC_URGENT)
+		return true;
+
 	if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
 		get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
 		get_pages(sbi, F2FS_WB_CP_DATA) ||
@@ -2198,7 +2227,7 @@ static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
 		get_pages(sbi, F2FS_DIO_WRITE))
 		return false;
 
-	if (SM_I(sbi) && SM_I(sbi)->dcc_info &&
+	if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
 			atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
 		return false;
 
@@ -2320,57 +2349,23 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
 }
 
 /*
- * Inode flags
+ * On-disk inode flags (f2fs_inode::i_flags)
  */
-#define F2FS_SECRM_FL			0x00000001 /* Secure deletion */
-#define F2FS_UNRM_FL			0x00000002 /* Undelete */
-#define F2FS_COMPR_FL			0x00000004 /* Compress file */
 #define F2FS_SYNC_FL			0x00000008 /* Synchronous updates */
 #define F2FS_IMMUTABLE_FL		0x00000010 /* Immutable file */
 #define F2FS_APPEND_FL			0x00000020 /* writes to file may only append */
 #define F2FS_NODUMP_FL			0x00000040 /* do not dump file */
 #define F2FS_NOATIME_FL			0x00000080 /* do not update atime */
-/* Reserved for compression usage... */
-#define F2FS_DIRTY_FL			0x00000100
-#define F2FS_COMPRBLK_FL		0x00000200 /* One or more compressed clusters */
-#define F2FS_NOCOMPR_FL			0x00000400 /* Don't compress */
-#define F2FS_ENCRYPT_FL			0x00000800 /* encrypted file */
-/* End compression flags --- maybe not all used */
 #define F2FS_INDEX_FL			0x00001000 /* hash-indexed directory */
-#define F2FS_IMAGIC_FL			0x00002000 /* AFS directory */
-#define F2FS_JOURNAL_DATA_FL		0x00004000 /* file data should be journaled */
-#define F2FS_NOTAIL_FL			0x00008000 /* file tail should not be merged */
 #define F2FS_DIRSYNC_FL			0x00010000 /* dirsync behaviour (directories only) */
-#define F2FS_TOPDIR_FL			0x00020000 /* Top of directory hierarchies*/
-#define F2FS_HUGE_FILE_FL               0x00040000 /* Set to each huge file */
-#define F2FS_EXTENTS_FL			0x00080000 /* Inode uses extents */
-#define F2FS_EA_INODE_FL	        0x00200000 /* Inode used for large EA */
-#define F2FS_EOFBLOCKS_FL		0x00400000 /* Blocks allocated beyond EOF */
-#define F2FS_NOCOW_FL			0x00800000 /* Do not cow file */
-#define F2FS_INLINE_DATA_FL		0x10000000 /* Inode has inline data. */
 #define F2FS_PROJINHERIT_FL		0x20000000 /* Create with parents projid */
-#define F2FS_RESERVED_FL		0x80000000 /* reserved for ext4 lib */
-
-#define F2FS_FL_USER_VISIBLE		0x30CBDFFF /* User visible flags */
-#define F2FS_FL_USER_MODIFIABLE		0x204BC0FF /* User modifiable flags */
-
-/* Flags we can manipulate with through F2FS_IOC_FSSETXATTR */
-#define F2FS_FL_XFLAG_VISIBLE		(F2FS_SYNC_FL | \
-					 F2FS_IMMUTABLE_FL | \
-					 F2FS_APPEND_FL | \
-					 F2FS_NODUMP_FL | \
-					 F2FS_NOATIME_FL | \
-					 F2FS_PROJINHERIT_FL)
 
 /* Flags that should be inherited by new inodes from their parent. */
-#define F2FS_FL_INHERITED (F2FS_SECRM_FL | F2FS_UNRM_FL | F2FS_COMPR_FL |\
-			   F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL |\
-			   F2FS_NOCOMPR_FL | F2FS_JOURNAL_DATA_FL |\
-			   F2FS_NOTAIL_FL | F2FS_DIRSYNC_FL |\
-			   F2FS_PROJINHERIT_FL)
+#define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
+			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL)
 
 /* Flags that are appropriate for regular files (all but dir-specific ones). */
-#define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_TOPDIR_FL))
+#define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL))
 
 /* Flags that are appropriate for non-directories/regular files. */
 #define F2FS_OTHER_FLMASK	(F2FS_NODUMP_FL | F2FS_NOATIME_FL)
@@ -2856,9 +2851,8 @@ static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
 					block_t blkaddr, int type)
 {
 	if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"invalid blkaddr: %u, type: %d, run fsck to fix.",
-			blkaddr, type);
+		f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
+			 blkaddr, type);
 		f2fs_bug_on(sbi, 1);
 	}
 }
@@ -2989,8 +2983,6 @@ int f2fs_quota_sync(struct super_block *sb, int type);
 void f2fs_quota_off_umount(struct super_block *sb);
 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
 int f2fs_sync_fs(struct super_block *sb, int sync);
-extern __printf(3, 4)
-void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
 
 /*
@@ -3074,9 +3066,12 @@ bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
 					struct cp_control *cpc);
 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
-int f2fs_disable_cp_again(struct f2fs_sb_info *sbi);
+block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
+int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
+void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
+					unsigned int start, unsigned int end);
 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi);
 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
@@ -3169,6 +3164,7 @@ void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
 				nid_t ino, enum page_type type);
 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
+int f2fs_merge_page_bio(struct f2fs_io_info *fio);
 void f2fs_submit_page_write(struct f2fs_io_info *fio);
 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
 			block_t blk_addr, struct bio *bio);
@@ -3214,6 +3210,7 @@ block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
 			unsigned int segno);
 void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
+int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
 
 /*
  * recovery.c
@@ -3686,7 +3683,8 @@ static inline bool f2fs_force_buffered_io(struct inode *inode,
 	if (test_opt(sbi, LFS) && (rw == WRITE) &&
 				block_unaligned_IO(inode, iocb, iter))
 		return true;
-	if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED))
+	if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
+					!(inode->i_flags & S_SWAPFILE))
 		return true;
 
 	return false;
@@ -3712,4 +3710,7 @@ static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
 	return false;
 }
 
+#define EFSBADCRC	EBADMSG		/* Bad CRC detected */
+#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
+
 #endif /* _LINUX_F2FS_H */
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 45b45f37d347..f8d46df8fa9e 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -707,11 +707,9 @@ int f2fs_getattr(const struct path *path, struct kstat *stat,
 		stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
 	}
 
-	flags = fi->i_flags & F2FS_FL_USER_VISIBLE;
+	flags = fi->i_flags;
 	if (flags & F2FS_APPEND_FL)
 		stat->attributes |= STATX_ATTR_APPEND;
-	if (flags & F2FS_COMPR_FL)
-		stat->attributes |= STATX_ATTR_COMPRESSED;
 	if (IS_ENCRYPTED(inode))
 		stat->attributes |= STATX_ATTR_ENCRYPTED;
 	if (flags & F2FS_IMMUTABLE_FL)
@@ -720,7 +718,6 @@ int f2fs_getattr(const struct path *path, struct kstat *stat,
 		stat->attributes |= STATX_ATTR_NODUMP;
 
 	stat->attributes_mask |= (STATX_ATTR_APPEND |
-				  STATX_ATTR_COMPRESSED |
 				  STATX_ATTR_ENCRYPTED |
 				  STATX_ATTR_IMMUTABLE |
 				  STATX_ATTR_NODUMP);
@@ -1026,7 +1023,7 @@ next_dnode:
 			!f2fs_is_valid_blkaddr(sbi, *blkaddr,
 					DATA_GENERIC_ENHANCE)) {
 			f2fs_put_dnode(&dn);
-			return -EFAULT;
+			return -EFSCORRUPTED;
 		}
 
 		if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
@@ -1214,7 +1211,7 @@ roll_back:
 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
-	pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+	pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
 	pgoff_t start = offset >> PAGE_SHIFT;
 	pgoff_t end = (offset + len) >> PAGE_SHIFT;
 	int ret;
@@ -1467,7 +1464,7 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
 	pg_start = offset >> PAGE_SHIFT;
 	pg_end = (offset + len) >> PAGE_SHIFT;
 	delta = pg_end - pg_start;
-	idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+	idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
 
 	/* avoid gc operation during block exchange */
 	down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
@@ -1531,7 +1528,12 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
 	if (off_end)
 		map.m_len++;
 
-	err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
+	if (f2fs_is_pinned_file(inode))
+		map.m_seg_type = CURSEG_COLD_DATA;
+
+	err = f2fs_map_blocks(inode, &map, 1, (f2fs_is_pinned_file(inode) ?
+						F2FS_GET_BLOCK_PRE_DIO :
+						F2FS_GET_BLOCK_PRE_AIO));
 	if (err) {
 		pgoff_t last_off;
 
@@ -1648,44 +1650,22 @@ static int f2fs_file_flush(struct file *file, fl_owner_t id)
 	return 0;
 }
 
-static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
+static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
 {
-	struct inode *inode = file_inode(filp);
 	struct f2fs_inode_info *fi = F2FS_I(inode);
-	unsigned int flags = fi->i_flags;
-
-	if (IS_ENCRYPTED(inode))
-		flags |= F2FS_ENCRYPT_FL;
-	if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
-		flags |= F2FS_INLINE_DATA_FL;
-	if (is_inode_flag_set(inode, FI_PIN_FILE))
-		flags |= F2FS_NOCOW_FL;
-
-	flags &= F2FS_FL_USER_VISIBLE;
-
-	return put_user(flags, (int __user *)arg);
-}
-
-static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
-{
-	struct f2fs_inode_info *fi = F2FS_I(inode);
-	unsigned int oldflags;
+	u32 oldflags;
 
 	/* Is it quota file? Do not allow user to mess with it */
 	if (IS_NOQUOTA(inode))
 		return -EPERM;
 
-	flags = f2fs_mask_flags(inode->i_mode, flags);
-
 	oldflags = fi->i_flags;
 
-	if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
+	if ((iflags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
 		if (!capable(CAP_LINUX_IMMUTABLE))
 			return -EPERM;
 
-	flags = flags & F2FS_FL_USER_MODIFIABLE;
-	flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE;
-	fi->i_flags = flags;
+	fi->i_flags = iflags | (oldflags & ~mask);
 
 	if (fi->i_flags & F2FS_PROJINHERIT_FL)
 		set_inode_flag(inode, FI_PROJ_INHERIT);
@@ -1698,26 +1678,124 @@ static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
 	return 0;
 }
 
+/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
+
+/*
+ * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
+ * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
+ * F2FS_GETTABLE_FS_FL.  To also make it settable via FS_IOC_SETFLAGS, also add
+ * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
+ */
+
+static const struct {
+	u32 iflag;
+	u32 fsflag;
+} f2fs_fsflags_map[] = {
+	{ F2FS_SYNC_FL,		FS_SYNC_FL },
+	{ F2FS_IMMUTABLE_FL,	FS_IMMUTABLE_FL },
+	{ F2FS_APPEND_FL,	FS_APPEND_FL },
+	{ F2FS_NODUMP_FL,	FS_NODUMP_FL },
+	{ F2FS_NOATIME_FL,	FS_NOATIME_FL },
+	{ F2FS_INDEX_FL,	FS_INDEX_FL },
+	{ F2FS_DIRSYNC_FL,	FS_DIRSYNC_FL },
+	{ F2FS_PROJINHERIT_FL,	FS_PROJINHERIT_FL },
+};
+
+#define F2FS_GETTABLE_FS_FL (		\
+		FS_SYNC_FL |		\
+		FS_IMMUTABLE_FL |	\
+		FS_APPEND_FL |		\
+		FS_NODUMP_FL |		\
+		FS_NOATIME_FL |		\
+		FS_INDEX_FL |		\
+		FS_DIRSYNC_FL |		\
+		FS_PROJINHERIT_FL |	\
+		FS_ENCRYPT_FL |		\
+		FS_INLINE_DATA_FL |	\
+		FS_NOCOW_FL)
+
+#define F2FS_SETTABLE_FS_FL (		\
+		FS_SYNC_FL |		\
+		FS_IMMUTABLE_FL |	\
+		FS_APPEND_FL |		\
+		FS_NODUMP_FL |		\
+		FS_NOATIME_FL |		\
+		FS_DIRSYNC_FL |		\
+		FS_PROJINHERIT_FL)
+
+/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
+static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
+{
+	u32 fsflags = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
+		if (iflags & f2fs_fsflags_map[i].iflag)
+			fsflags |= f2fs_fsflags_map[i].fsflag;
+
+	return fsflags;
+}
+
+/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
+static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
+{
+	u32 iflags = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
+		if (fsflags & f2fs_fsflags_map[i].fsflag)
+			iflags |= f2fs_fsflags_map[i].iflag;
+
+	return iflags;
+}
+
+static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
+{
+	struct inode *inode = file_inode(filp);
+	struct f2fs_inode_info *fi = F2FS_I(inode);
+	u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
+
+	if (IS_ENCRYPTED(inode))
+		fsflags |= FS_ENCRYPT_FL;
+	if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
+		fsflags |= FS_INLINE_DATA_FL;
+	if (is_inode_flag_set(inode, FI_PIN_FILE))
+		fsflags |= FS_NOCOW_FL;
+
+	fsflags &= F2FS_GETTABLE_FS_FL;
+
+	return put_user(fsflags, (int __user *)arg);
+}
+
 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
 {
 	struct inode *inode = file_inode(filp);
-	unsigned int flags;
+	u32 fsflags;
+	u32 iflags;
 	int ret;
 
 	if (!inode_owner_or_capable(inode))
 		return -EACCES;
 
-	if (get_user(flags, (int __user *)arg))
+	if (get_user(fsflags, (int __user *)arg))
 		return -EFAULT;
 
+	if (fsflags & ~F2FS_GETTABLE_FS_FL)
+		return -EOPNOTSUPP;
+	fsflags &= F2FS_SETTABLE_FS_FL;
+
+	iflags = f2fs_fsflags_to_iflags(fsflags);
+	if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
+		return -EOPNOTSUPP;
+
 	ret = mnt_want_write_file(filp);
 	if (ret)
 		return ret;
 
 	inode_lock(inode);
 
-	ret = __f2fs_ioc_setflags(inode, flags);
-
+	ret = f2fs_setflags_common(inode, iflags,
+			f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
 	inode_unlock(inode);
 	mnt_drop_write_file(filp);
 	return ret;
@@ -1764,9 +1842,8 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
 	 * f2fs_is_atomic_file.
 	 */
 	if (get_dirty_pages(inode))
-		f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
-		"Unexpected flush for atomic writes: ino=%lu, npages=%u",
-					inode->i_ino, get_dirty_pages(inode));
+		f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
+			  inode->i_ino, get_dirty_pages(inode));
 	ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
 	if (ret) {
 		up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
@@ -2201,8 +2278,7 @@ static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
 		return -EROFS;
 
 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"Skipping Checkpoint. Checkpoints currently disabled.");
+		f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
 		return -EINVAL;
 	}
 
@@ -2291,7 +2367,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
 	if (!fragmented)
 		goto out;
 
-	sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
+	sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
 
 	/*
 	 * make sure there are enough free section for LFS allocation, this can
@@ -2587,10 +2663,8 @@ static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
 
 	if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
 			__is_large_section(sbi)) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"Can't flush %u in %d for segs_per_sec %u != 1",
-				range.dev_num, sbi->s_ndevs,
-				sbi->segs_per_sec);
+		f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
+			  range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
 		return -EINVAL;
 	}
 
@@ -2727,47 +2801,56 @@ static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
 }
 #endif
 
-/* Transfer internal flags to xflags */
-static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
-{
-	__u32 xflags = 0;
-
-	if (iflags & F2FS_SYNC_FL)
-		xflags |= FS_XFLAG_SYNC;
-	if (iflags & F2FS_IMMUTABLE_FL)
-		xflags |= FS_XFLAG_IMMUTABLE;
-	if (iflags & F2FS_APPEND_FL)
-		xflags |= FS_XFLAG_APPEND;
-	if (iflags & F2FS_NODUMP_FL)
-		xflags |= FS_XFLAG_NODUMP;
-	if (iflags & F2FS_NOATIME_FL)
-		xflags |= FS_XFLAG_NOATIME;
-	if (iflags & F2FS_PROJINHERIT_FL)
-		xflags |= FS_XFLAG_PROJINHERIT;
+/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
+
+/*
+ * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
+ * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
+ * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
+ */
+
+static const struct {
+	u32 iflag;
+	u32 xflag;
+} f2fs_xflags_map[] = {
+	{ F2FS_SYNC_FL,		FS_XFLAG_SYNC },
+	{ F2FS_IMMUTABLE_FL,	FS_XFLAG_IMMUTABLE },
+	{ F2FS_APPEND_FL,	FS_XFLAG_APPEND },
+	{ F2FS_NODUMP_FL,	FS_XFLAG_NODUMP },
+	{ F2FS_NOATIME_FL,	FS_XFLAG_NOATIME },
+	{ F2FS_PROJINHERIT_FL,	FS_XFLAG_PROJINHERIT },
+};
+
+#define F2FS_SUPPORTED_XFLAGS (		\
+		FS_XFLAG_SYNC |		\
+		FS_XFLAG_IMMUTABLE |	\
+		FS_XFLAG_APPEND |	\
+		FS_XFLAG_NODUMP |	\
+		FS_XFLAG_NOATIME |	\
+		FS_XFLAG_PROJINHERIT)
+
+/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
+static inline u32 f2fs_iflags_to_xflags(u32 iflags)
+{
+	u32 xflags = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
+		if (iflags & f2fs_xflags_map[i].iflag)
+			xflags |= f2fs_xflags_map[i].xflag;
+
 	return xflags;
 }
 
-#define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
-				  FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
-				  FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
-
-/* Transfer xflags flags to internal */
-static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
+/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
+static inline u32 f2fs_xflags_to_iflags(u32 xflags)
 {
-	unsigned long iflags = 0;
+	u32 iflags = 0;
+	int i;
 
-	if (xflags & FS_XFLAG_SYNC)
-		iflags |= F2FS_SYNC_FL;
-	if (xflags & FS_XFLAG_IMMUTABLE)
-		iflags |= F2FS_IMMUTABLE_FL;
-	if (xflags & FS_XFLAG_APPEND)
-		iflags |= F2FS_APPEND_FL;
-	if (xflags & FS_XFLAG_NODUMP)
-		iflags |= F2FS_NODUMP_FL;
-	if (xflags & FS_XFLAG_NOATIME)
-		iflags |= F2FS_NOATIME_FL;
-	if (xflags & FS_XFLAG_PROJINHERIT)
-		iflags |= F2FS_PROJINHERIT_FL;
+	for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
+		if (xflags & f2fs_xflags_map[i].xflag)
+			iflags |= f2fs_xflags_map[i].iflag;
 
 	return iflags;
 }
@@ -2779,8 +2862,7 @@ static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
 	struct fsxattr fa;
 
 	memset(&fa, 0, sizeof(struct fsxattr));
-	fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
-				F2FS_FL_USER_VISIBLE);
+	fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags);
 
 	if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
 		fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
@@ -2818,9 +2900,8 @@ static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
 static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
 {
 	struct inode *inode = file_inode(filp);
-	struct f2fs_inode_info *fi = F2FS_I(inode);
 	struct fsxattr fa;
-	unsigned int flags;
+	u32 iflags;
 	int err;
 
 	if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
@@ -2830,11 +2911,11 @@ static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
 	if (!inode_owner_or_capable(inode))
 		return -EACCES;
 
-	if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
+	if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
 		return -EOPNOTSUPP;
 
-	flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
-	if (f2fs_mask_flags(inode->i_mode, flags) != flags)
+	iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
+	if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
 		return -EOPNOTSUPP;
 
 	err = mnt_want_write_file(filp);
@@ -2845,9 +2926,8 @@ static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
 	err = f2fs_ioctl_check_project(inode, &fa);
 	if (err)
 		goto out;
-	flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
-				(flags & F2FS_FL_XFLAG_VISIBLE);
-	err = __f2fs_ioc_setflags(inode, flags);
+	err = f2fs_setflags_common(inode, iflags,
+			f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
 	if (err)
 		goto out;
 
@@ -2869,10 +2949,9 @@ int f2fs_pin_file_control(struct inode *inode, bool inc)
 				fi->i_gc_failures[GC_FAILURE_PIN] + 1);
 
 	if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: Enable GC = ino %lx after %x GC trials",
-			__func__, inode->i_ino,
-			fi->i_gc_failures[GC_FAILURE_PIN]);
+		f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
+			  __func__, inode->i_ino,
+			  fi->i_gc_failures[GC_FAILURE_PIN]);
 		clear_inode_flag(inode, FI_PIN_FILE);
 		return -EAGAIN;
 	}
@@ -2885,9 +2964,6 @@ static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
 	__u32 pin;
 	int ret = 0;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	if (get_user(pin, (__u32 __user *)arg))
 		return -EFAULT;
 
@@ -2980,6 +3056,27 @@ static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
 	return f2fs_precache_extents(file_inode(filp));
 }
 
+static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
+	__u64 block_count;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	if (f2fs_readonly(sbi->sb))
+		return -EROFS;
+
+	if (copy_from_user(&block_count, (void __user *)arg,
+			   sizeof(block_count)))
+		return -EFAULT;
+
+	ret = f2fs_resize_fs(sbi, block_count);
+
+	return ret;
+}
+
 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
@@ -3036,6 +3133,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return f2fs_ioc_set_pin_file(filp, arg);
 	case F2FS_IOC_PRECACHE_EXTENTS:
 		return f2fs_ioc_precache_extents(filp, arg);
+	case F2FS_IOC_RESIZE_FS:
+		return f2fs_ioc_resize_fs(filp, arg);
 	default:
 		return -ENOTTY;
 	}
@@ -3149,6 +3248,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case F2FS_IOC_GET_PIN_FILE:
 	case F2FS_IOC_SET_PIN_FILE:
 	case F2FS_IOC_PRECACHE_EXTENTS:
+	case F2FS_IOC_RESIZE_FS:
 		break;
 	default:
 		return -ENOIOCTLCMD;
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 963fb4571fd9..6691f526fa40 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -311,10 +311,11 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
 	struct sit_info *sm = SIT_I(sbi);
 	struct victim_sel_policy p;
 	unsigned int secno, last_victim;
-	unsigned int last_segment = MAIN_SEGS(sbi);
+	unsigned int last_segment;
 	unsigned int nsearched = 0;
 
 	mutex_lock(&dirty_i->seglist_lock);
+	last_segment = MAIN_SECS(sbi) * sbi->segs_per_sec;
 
 	p.alloc_mode = alloc_mode;
 	select_policy(sbi, gc_type, type, &p);
@@ -387,7 +388,8 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
 			goto next;
 		/* Don't touch checkpointed data */
 		if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
-					get_ckpt_valid_blocks(sbi, segno)))
+					get_ckpt_valid_blocks(sbi, segno) &&
+					p.alloc_mode != SSR))
 			goto next;
 		if (gc_type == BG_GC && test_bit(secno, dirty_i->victim_secmap))
 			goto next;
@@ -404,7 +406,8 @@ next:
 				sm->last_victim[p.gc_mode] = last_victim + 1;
 			else
 				sm->last_victim[p.gc_mode] = segno + 1;
-			sm->last_victim[p.gc_mode] %= MAIN_SEGS(sbi);
+			sm->last_victim[p.gc_mode] %=
+				(MAIN_SECS(sbi) * sbi->segs_per_sec);
 			break;
 		}
 	}
@@ -615,9 +618,8 @@ static bool is_alive(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
 	}
 
 	if (sum->version != dni->version) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-				"%s: valid data with mismatched node version.",
-				__func__);
+		f2fs_warn(sbi, "%s: valid data with mismatched node version.",
+			  __func__);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 	}
 
@@ -658,7 +660,7 @@ static int ra_data_block(struct inode *inode, pgoff_t index)
 		dn.data_blkaddr = ei.blk + index - ei.fofs;
 		if (unlikely(!f2fs_is_valid_blkaddr(sbi, dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ))) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto put_page;
 		}
 		goto got_it;
@@ -676,7 +678,7 @@ static int ra_data_block(struct inode *inode, pgoff_t index)
 	}
 	if (unlikely(!f2fs_is_valid_blkaddr(sbi, dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE))) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto put_page;
 	}
 got_it:
@@ -1180,9 +1182,8 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 
 		sum = page_address(sum_page);
 		if (type != GET_SUM_TYPE((&sum->footer))) {
-			f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent segment (%u) "
-				"type [%d, %d] in SSA and SIT",
-				segno, type, GET_SUM_TYPE((&sum->footer)));
+			f2fs_err(sbi, "Inconsistent segment (%u) type [%d, %d] in SSA and SIT",
+				 segno, type, GET_SUM_TYPE((&sum->footer)));
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
 			f2fs_stop_checkpoint(sbi, false);
 			goto skip;
@@ -1360,3 +1361,176 @@ void f2fs_build_gc_manager(struct f2fs_sb_info *sbi)
 		SIT_I(sbi)->last_victim[ALLOC_NEXT] =
 				GET_SEGNO(sbi, FDEV(0).end_blk) + 1;
 }
+
+static int free_segment_range(struct f2fs_sb_info *sbi, unsigned int start,
+							unsigned int end)
+{
+	int type;
+	unsigned int segno, next_inuse;
+	int err = 0;
+
+	/* Move out cursegs from the target range */
+	for (type = CURSEG_HOT_DATA; type < NR_CURSEG_TYPE; type++)
+		allocate_segment_for_resize(sbi, type, start, end);
+
+	/* do GC to move out valid blocks in the range */
+	for (segno = start; segno <= end; segno += sbi->segs_per_sec) {
+		struct gc_inode_list gc_list = {
+			.ilist = LIST_HEAD_INIT(gc_list.ilist),
+			.iroot = RADIX_TREE_INIT(gc_list.iroot, GFP_NOFS),
+		};
+
+		mutex_lock(&sbi->gc_mutex);
+		do_garbage_collect(sbi, segno, &gc_list, FG_GC);
+		mutex_unlock(&sbi->gc_mutex);
+		put_gc_inode(&gc_list);
+
+		if (get_valid_blocks(sbi, segno, true))
+			return -EAGAIN;
+	}
+
+	err = f2fs_sync_fs(sbi->sb, 1);
+	if (err)
+		return err;
+
+	next_inuse = find_next_inuse(FREE_I(sbi), end + 1, start);
+	if (next_inuse <= end) {
+		f2fs_err(sbi, "segno %u should be free but still inuse!",
+			 next_inuse);
+		f2fs_bug_on(sbi, 1);
+	}
+	return err;
+}
+
+static void update_sb_metadata(struct f2fs_sb_info *sbi, int secs)
+{
+	struct f2fs_super_block *raw_sb = F2FS_RAW_SUPER(sbi);
+	int section_count = le32_to_cpu(raw_sb->section_count);
+	int segment_count = le32_to_cpu(raw_sb->segment_count);
+	int segment_count_main = le32_to_cpu(raw_sb->segment_count_main);
+	long long block_count = le64_to_cpu(raw_sb->block_count);
+	int segs = secs * sbi->segs_per_sec;
+
+	raw_sb->section_count = cpu_to_le32(section_count + secs);
+	raw_sb->segment_count = cpu_to_le32(segment_count + segs);
+	raw_sb->segment_count_main = cpu_to_le32(segment_count_main + segs);
+	raw_sb->block_count = cpu_to_le64(block_count +
+					(long long)segs * sbi->blocks_per_seg);
+}
+
+static void update_fs_metadata(struct f2fs_sb_info *sbi, int secs)
+{
+	int segs = secs * sbi->segs_per_sec;
+	long long user_block_count =
+				le64_to_cpu(F2FS_CKPT(sbi)->user_block_count);
+
+	SM_I(sbi)->segment_count = (int)SM_I(sbi)->segment_count + segs;
+	MAIN_SEGS(sbi) = (int)MAIN_SEGS(sbi) + segs;
+	FREE_I(sbi)->free_sections = (int)FREE_I(sbi)->free_sections + secs;
+	FREE_I(sbi)->free_segments = (int)FREE_I(sbi)->free_segments + segs;
+	F2FS_CKPT(sbi)->user_block_count = cpu_to_le64(user_block_count +
+					(long long)segs * sbi->blocks_per_seg);
+}
+
+int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
+{
+	__u64 old_block_count, shrunk_blocks;
+	unsigned int secs;
+	int gc_mode, gc_type;
+	int err = 0;
+	__u32 rem;
+
+	old_block_count = le64_to_cpu(F2FS_RAW_SUPER(sbi)->block_count);
+	if (block_count > old_block_count)
+		return -EINVAL;
+
+	/* new fs size should align to section size */
+	div_u64_rem(block_count, BLKS_PER_SEC(sbi), &rem);
+	if (rem)
+		return -EINVAL;
+
+	if (block_count == old_block_count)
+		return 0;
+
+	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
+		f2fs_err(sbi, "Should run fsck to repair first.");
+		return -EFSCORRUPTED;
+	}
+
+	if (test_opt(sbi, DISABLE_CHECKPOINT)) {
+		f2fs_err(sbi, "Checkpoint should be enabled.");
+		return -EINVAL;
+	}
+
+	freeze_bdev(sbi->sb->s_bdev);
+
+	shrunk_blocks = old_block_count - block_count;
+	secs = div_u64(shrunk_blocks, BLKS_PER_SEC(sbi));
+	spin_lock(&sbi->stat_lock);
+	if (shrunk_blocks + valid_user_blocks(sbi) +
+		sbi->current_reserved_blocks + sbi->unusable_block_count +
+		F2FS_OPTION(sbi).root_reserved_blocks > sbi->user_block_count)
+		err = -ENOSPC;
+	else
+		sbi->user_block_count -= shrunk_blocks;
+	spin_unlock(&sbi->stat_lock);
+	if (err) {
+		thaw_bdev(sbi->sb->s_bdev, sbi->sb);
+		return err;
+	}
+
+	mutex_lock(&sbi->resize_mutex);
+	set_sbi_flag(sbi, SBI_IS_RESIZEFS);
+
+	mutex_lock(&DIRTY_I(sbi)->seglist_lock);
+
+	MAIN_SECS(sbi) -= secs;
+
+	for (gc_mode = 0; gc_mode < MAX_GC_POLICY; gc_mode++)
+		if (SIT_I(sbi)->last_victim[gc_mode] >=
+					MAIN_SECS(sbi) * sbi->segs_per_sec)
+			SIT_I(sbi)->last_victim[gc_mode] = 0;
+
+	for (gc_type = BG_GC; gc_type <= FG_GC; gc_type++)
+		if (sbi->next_victim_seg[gc_type] >=
+					MAIN_SECS(sbi) * sbi->segs_per_sec)
+			sbi->next_victim_seg[gc_type] = NULL_SEGNO;
+
+	mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
+
+	err = free_segment_range(sbi, MAIN_SECS(sbi) * sbi->segs_per_sec,
+			MAIN_SEGS(sbi) - 1);
+	if (err)
+		goto out;
+
+	update_sb_metadata(sbi, -secs);
+
+	err = f2fs_commit_super(sbi, false);
+	if (err) {
+		update_sb_metadata(sbi, secs);
+		goto out;
+	}
+
+	update_fs_metadata(sbi, -secs);
+	clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
+	err = f2fs_sync_fs(sbi->sb, 1);
+	if (err) {
+		update_fs_metadata(sbi, secs);
+		update_sb_metadata(sbi, secs);
+		f2fs_commit_super(sbi, false);
+	}
+out:
+	if (err) {
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_err(sbi, "resize_fs failed, should run fsck to repair!");
+
+		MAIN_SECS(sbi) += secs;
+		spin_lock(&sbi->stat_lock);
+		sbi->user_block_count += shrunk_blocks;
+		spin_unlock(&sbi->stat_lock);
+	}
+	clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
+	mutex_unlock(&sbi->resize_mutex);
+	thaw_bdev(sbi->sb->s_bdev, sbi->sb);
+	return err;
+}
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 404d2462a0fe..3613efca8c00 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -140,11 +140,9 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
 	if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
 		f2fs_put_dnode(dn);
 		set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
-		f2fs_msg(fio.sbi->sb, KERN_WARNING,
-			"%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, "
-			"run fsck to fix.",
-			__func__, dn->inode->i_ino, dn->data_blkaddr);
-		return -EINVAL;
+		f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
+			  __func__, dn->inode->i_ino, dn->data_blkaddr);
+		return -EFSCORRUPTED;
 	}
 
 	f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
@@ -383,11 +381,9 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
 	if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
 		f2fs_put_dnode(&dn);
 		set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
-		f2fs_msg(F2FS_P_SB(page)->sb, KERN_WARNING,
-			"%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, "
-			"run fsck to fix.",
-			__func__, dir->i_ino, dn.data_blkaddr);
-		err = -EINVAL;
+		f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
+			  __func__, dir->i_ino, dn.data_blkaddr);
+		err = -EFSCORRUPTED;
 		goto out;
 	}
 
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index ccb02226dd2c..a33d7a849b2d 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -74,7 +74,7 @@ static int __written_first_block(struct f2fs_sb_info *sbi,
 	if (!__is_valid_data_blkaddr(addr))
 		return 1;
 	if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
-		return -EFAULT;
+		return -EFSCORRUPTED;
 	return 0;
 }
 
@@ -176,9 +176,8 @@ bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
 	calculated = f2fs_inode_chksum(sbi, page);
 
 	if (provided != calculated)
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
-			page->index, ino_of_node(page), provided, calculated);
+		f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
+			  page->index, ino_of_node(page), provided, calculated);
 
 	return provided == calculated;
 }
@@ -202,50 +201,41 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 	iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
 	if (!iblocks) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, "
-			"run fsck to fix.",
-			__func__, inode->i_ino, iblocks);
+		f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
+			  __func__, inode->i_ino, iblocks);
 		return false;
 	}
 
 	if (ino_of_node(node_page) != nid_of_node(node_page)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: corrupted inode footer i_ino=%lx, ino,nid: "
-			"[%u, %u] run fsck to fix.",
-			__func__, inode->i_ino,
-			ino_of_node(node_page), nid_of_node(node_page));
+		f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
+			  __func__, inode->i_ino,
+			  ino_of_node(node_page), nid_of_node(node_page));
 		return false;
 	}
 
 	if (f2fs_sb_has_flexible_inline_xattr(sbi)
 			&& !f2fs_has_extra_attr(inode)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: corrupted inode ino=%lx, run fsck to fix.",
-			__func__, inode->i_ino);
+		f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
+			  __func__, inode->i_ino);
 		return false;
 	}
 
 	if (f2fs_has_extra_attr(inode) &&
 			!f2fs_sb_has_extra_attr(sbi)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: inode (ino=%lx) is with extra_attr, "
-			"but extra_attr feature is off",
-			__func__, inode->i_ino);
+		f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
+			  __func__, inode->i_ino);
 		return false;
 	}
 
 	if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 			fi->i_extra_isize % sizeof(__le32)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: inode (ino=%lx) has corrupted i_extra_isize: %d, "
-			"max: %zu",
-			__func__, inode->i_ino, fi->i_extra_isize,
-			F2FS_TOTAL_EXTRA_ATTR_SIZE);
+		f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
+			  __func__, inode->i_ino, fi->i_extra_isize,
+			  F2FS_TOTAL_EXTRA_ATTR_SIZE);
 		return false;
 	}
 
@@ -255,11 +245,9 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 		(!fi->i_inline_xattr_size ||
 		fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: inode (ino=%lx) has corrupted "
-			"i_inline_xattr_size: %d, max: %zu",
-			__func__, inode->i_ino, fi->i_inline_xattr_size,
-			MAX_INLINE_XATTR_SIZE);
+		f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
+			  __func__, inode->i_ino, fi->i_inline_xattr_size,
+			  MAX_INLINE_XATTR_SIZE);
 		return false;
 	}
 
@@ -272,11 +260,9 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 			!f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
 						DATA_GENERIC_ENHANCE))) {
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"%s: inode (ino=%lx) extent info [%u, %u, %u] "
-				"is incorrect, run fsck to fix",
-				__func__, inode->i_ino,
-				ei->blk, ei->fofs, ei->len);
+			f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
+				  __func__, inode->i_ino,
+				  ei->blk, ei->fofs, ei->len);
 			return false;
 		}
 	}
@@ -284,19 +270,15 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 	if (f2fs_has_inline_data(inode) &&
 			(!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: inode (ino=%lx, mode=%u) should not have "
-			"inline_data, run fsck to fix",
-			__func__, inode->i_ino, inode->i_mode);
+		f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
+			  __func__, inode->i_ino, inode->i_mode);
 		return false;
 	}
 
 	if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: inode (ino=%lx, mode=%u) should not have "
-			"inline_dentry, run fsck to fix",
-			__func__, inode->i_ino, inode->i_mode);
+		f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
+			  __func__, inode->i_ino, inode->i_mode);
 		return false;
 	}
 
@@ -343,6 +325,8 @@ static int do_read_inode(struct inode *inode)
 					le16_to_cpu(ri->i_gc_failures);
 	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 	fi->i_flags = le32_to_cpu(ri->i_flags);
+	if (S_ISREG(inode->i_mode))
+		fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 	fi->flags = 0;
 	fi->i_advise = ri->i_advise;
 	fi->i_pino = le32_to_cpu(ri->i_pino);
@@ -374,7 +358,7 @@ static int do_read_inode(struct inode *inode)
 
 	if (!sanity_check_inode(inode, node_page)) {
 		f2fs_put_page(node_page, 1);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 
 	/* check data exist */
@@ -783,8 +767,7 @@ void f2fs_handle_failed_inode(struct inode *inode)
 	err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
 	if (err) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"May loss orphan inode, run fsck to fix.");
+		f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
 		goto out;
 	}
 
@@ -792,8 +775,7 @@ void f2fs_handle_failed_inode(struct inode *inode)
 		err = f2fs_acquire_orphan_inode(sbi);
 		if (err) {
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"Too many orphan inodes, run fsck to fix.");
+			f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
 		} else {
 			f2fs_add_orphan_inode(inode);
 		}
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 0f77f9242751..c5b99042e6f2 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -385,9 +385,8 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 	int err = 0;
 
 	if (f2fs_readonly(sbi->sb)) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"skip recovering inline_dots inode (ino:%lu, pino:%u) "
-			"in readonly mountpoint", dir->i_ino, pino);
+		f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
+			  dir->i_ino, pino);
 		return 0;
 	}
 
@@ -484,9 +483,8 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 	if (IS_ENCRYPTED(dir) &&
 	    (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
 	    !fscrypt_has_permitted_context(dir, inode)) {
-		f2fs_msg(inode->i_sb, KERN_WARNING,
-			 "Inconsistent encryption contexts: %lu/%lu",
-			 dir->i_ino, inode->i_ino);
+		f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
+			  dir->i_ino, inode->i_ino);
 		err = -EPERM;
 		goto out_iput;
 	}
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 18a038a2a9fa..a18b2a895771 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -34,10 +34,9 @@ int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
 {
 	if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		f2fs_msg(sbi->sb, KERN_WARNING,
-				"%s: out-of-range nid=%x, run fsck to fix.",
-				__func__, nid);
-		return -EINVAL;
+		f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.",
+			  __func__, nid);
+		return -EFSCORRUPTED;
 	}
 	return 0;
 }
@@ -1189,10 +1188,8 @@ int f2fs_remove_inode_page(struct inode *inode)
 	}
 
 	if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) {
-		f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
-			"Inconsistent i_blocks, ino:%lu, iblocks:%llu",
-			inode->i_ino,
-			(unsigned long long)inode->i_blocks);
+		f2fs_warn(F2FS_I_SB(inode), "Inconsistent i_blocks, ino:%lu, iblocks:%llu",
+			  inode->i_ino, (unsigned long long)inode->i_blocks);
 		set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
 	}
 
@@ -1291,7 +1288,7 @@ static int read_node_page(struct page *page, int op_flags)
 	if (PageUptodate(page)) {
 		if (!f2fs_inode_chksum_verify(sbi, page)) {
 			ClearPageUptodate(page);
-			return -EBADMSG;
+			return -EFSBADCRC;
 		}
 		return LOCKED_PAGE;
 	}
@@ -1375,16 +1372,15 @@ repeat:
 	}
 
 	if (!f2fs_inode_chksum_verify(sbi, page)) {
-		err = -EBADMSG;
+		err = -EFSBADCRC;
 		goto out_err;
 	}
 page_hit:
 	if(unlikely(nid != nid_of_node(page))) {
-		f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, "
-			"nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
-			nid, nid_of_node(page), ino_of_node(page),
-			ofs_of_node(page), cpver_of_node(page),
-			next_blkaddr_of_node(page));
+		f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
+			  nid, nid_of_node(page), ino_of_node(page),
+			  ofs_of_node(page), cpver_of_node(page),
+			  next_blkaddr_of_node(page));
 		err = -EINVAL;
 out_err:
 		ClearPageUptodate(page);
@@ -1752,9 +1748,8 @@ continue_unlock:
 			break;
 	}
 	if (!ret && atomic && !marked) {
-		f2fs_msg(sbi->sb, KERN_DEBUG,
-			"Retry to write fsync mark: ino=%u, idx=%lx",
-					ino, last_page->index);
+		f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx",
+			   ino, last_page->index);
 		lock_page(last_page);
 		f2fs_wait_on_page_writeback(last_page, NODE, true, true);
 		set_page_dirty(last_page);
@@ -2304,8 +2299,7 @@ static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi,
 			if (ret) {
 				up_read(&nm_i->nat_tree_lock);
 				f2fs_bug_on(sbi, !mount);
-				f2fs_msg(sbi->sb, KERN_ERR,
-					"NAT is corrupt, run fsck to fix it");
+				f2fs_err(sbi, "NAT is corrupt, run fsck to fix it");
 				return ret;
 			}
 		}
@@ -2725,7 +2719,7 @@ static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
 		i = 1;
 	}
 	for (; i < NAT_ENTRY_PER_BLOCK; i++) {
-		if (nat_blk->entries[i].block_addr != NULL_ADDR)
+		if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR)
 			valid++;
 	}
 	if (valid == 0) {
@@ -2915,7 +2909,7 @@ static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
 	nm_i->full_nat_bits = nm_i->nat_bits + 8;
 	nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
 
-	f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint");
+	f2fs_notice(sbi, "Found nat_bits in checkpoint");
 	return 0;
 }
 
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index e04f82b3f4fc..783773e4560d 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -188,10 +188,9 @@ out:
 		name = "<encrypted>";
 	else
 		name = raw_inode->i_name;
-	f2fs_msg(inode->i_sb, KERN_NOTICE,
-			"%s: ino = %x, name = %s, dir = %lx, err = %d",
-			__func__, ino_of_node(ipage), name,
-			IS_ERR(dir) ? 0 : dir->i_ino, err);
+	f2fs_notice(F2FS_I_SB(inode), "%s: ino = %x, name = %s, dir = %lx, err = %d",
+		    __func__, ino_of_node(ipage), name,
+		    IS_ERR(dir) ? 0 : dir->i_ino, err);
 	return err;
 }
 
@@ -292,9 +291,8 @@ static int recover_inode(struct inode *inode, struct page *page)
 	else
 		name = F2FS_INODE(page)->i_name;
 
-	f2fs_msg(inode->i_sb, KERN_NOTICE,
-		"recover_inode: ino = %x, name = %s, inline = %x",
-			ino_of_node(page), name, raw->i_inline);
+	f2fs_notice(F2FS_I_SB(inode), "recover_inode: ino = %x, name = %s, inline = %x",
+		    ino_of_node(page), name, raw->i_inline);
 	return 0;
 }
 
@@ -371,10 +369,9 @@ next:
 		/* sanity check in order to detect looped node chain */
 		if (++loop_cnt >= free_blocks ||
 			blkaddr == next_blkaddr_of_node(page)) {
-			f2fs_msg(sbi->sb, KERN_NOTICE,
-				"%s: detect looped node chain, "
-				"blkaddr:%u, next:%u",
-				__func__, blkaddr, next_blkaddr_of_node(page));
+			f2fs_notice(sbi, "%s: detect looped node chain, blkaddr:%u, next:%u",
+				    __func__, blkaddr,
+				    next_blkaddr_of_node(page));
 			f2fs_put_page(page, 1);
 			err = -EINVAL;
 			break;
@@ -553,11 +550,10 @@ retry_dn:
 	f2fs_bug_on(sbi, ni.ino != ino_of_node(page));
 
 	if (ofs_of_node(dn.node_page) != ofs_of_node(page)) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"Inconsistent ofs_of_node, ino:%lu, ofs:%u, %u",
-			inode->i_ino, ofs_of_node(dn.node_page),
-			ofs_of_node(page));
-		err = -EFAULT;
+		f2fs_warn(sbi, "Inconsistent ofs_of_node, ino:%lu, ofs:%u, %u",
+			  inode->i_ino, ofs_of_node(dn.node_page),
+			  ofs_of_node(page));
+		err = -EFSCORRUPTED;
 		goto err;
 	}
 
@@ -569,13 +565,13 @@ retry_dn:
 
 		if (__is_valid_data_blkaddr(src) &&
 			!f2fs_is_valid_blkaddr(sbi, src, META_POR)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto err;
 		}
 
 		if (__is_valid_data_blkaddr(dest) &&
 			!f2fs_is_valid_blkaddr(sbi, dest, META_POR)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto err;
 		}
 
@@ -642,11 +638,9 @@ retry_prev:
 err:
 	f2fs_put_dnode(&dn);
 out:
-	f2fs_msg(sbi->sb, KERN_NOTICE,
-		"recover_data: ino = %lx (i_size: %s) recovered = %d, err = %d",
-		inode->i_ino,
-		file_keep_isize(inode) ? "keep" : "recover",
-		recovered, err);
+	f2fs_notice(sbi, "recover_data: ino = %lx (i_size: %s) recovered = %d, err = %d",
+		    inode->i_ino, file_keep_isize(inode) ? "keep" : "recover",
+		    recovered, err);
 	return err;
 }
 
@@ -734,8 +728,7 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only)
 #endif
 
 	if (s_flags & SB_RDONLY) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-				"recover fsync data on readonly fs");
+		f2fs_info(sbi, "recover fsync data on readonly fs");
 		sbi->sb->s_flags &= ~SB_RDONLY;
 	}
 
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 8dee063c833f..a661ac32e829 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -546,9 +546,13 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
 		if (test_opt(sbi, DATA_FLUSH)) {
 			struct blk_plug plug;
 
+			mutex_lock(&sbi->flush_lock);
+
 			blk_start_plug(&plug);
 			f2fs_sync_dirty_inodes(sbi, FILE_INODE);
 			blk_finish_plug(&plug);
+
+			mutex_unlock(&sbi->flush_lock);
 		}
 		f2fs_sync_fs(sbi->sb, true);
 		stat_inc_bg_cp_count(sbi->stat_info);
@@ -869,11 +873,14 @@ void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi)
 	mutex_unlock(&dirty_i->seglist_lock);
 }
 
-int f2fs_disable_cp_again(struct f2fs_sb_info *sbi)
+block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
 {
+	int ovp_hole_segs =
+		(overprovision_segments(sbi) - reserved_segments(sbi));
+	block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg;
 	struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
-	block_t ovp = overprovision_segments(sbi) << sbi->log_blocks_per_seg;
 	block_t holes[2] = {0, 0};	/* DATA and NODE */
+	block_t unusable;
 	struct seg_entry *se;
 	unsigned int segno;
 
@@ -887,10 +894,20 @@ int f2fs_disable_cp_again(struct f2fs_sb_info *sbi)
 	}
 	mutex_unlock(&dirty_i->seglist_lock);
 
-	if (holes[DATA] > ovp || holes[NODE] > ovp)
+	unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
+	if (unusable > ovp_holes)
+		return unusable - ovp_holes;
+	return 0;
+}
+
+int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable)
+{
+	int ovp_hole_segs =
+		(overprovision_segments(sbi) - reserved_segments(sbi));
+	if (unusable > F2FS_OPTION(sbi).unusable_cap)
 		return -EAGAIN;
 	if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&
-		dirty_segments(sbi) > overprovision_segments(sbi))
+		dirty_segments(sbi) > ovp_hole_segs)
 		return -EAGAIN;
 	return 0;
 }
@@ -1480,6 +1497,10 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
 		list_for_each_entry_safe(dc, tmp, pend_list, list) {
 			f2fs_bug_on(sbi, dc->state != D_PREP);
 
+			if (dpolicy->timeout != 0 &&
+				f2fs_time_over(sbi, dpolicy->timeout))
+				break;
+
 			if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
 						!is_idle(sbi, DISCARD_TIME)) {
 				io_interrupted = true;
@@ -1740,8 +1761,7 @@ static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
 		devi = f2fs_target_device_index(sbi, blkstart);
 		if (blkstart < FDEV(devi).start_blk ||
 		    blkstart > FDEV(devi).end_blk) {
-			f2fs_msg(sbi->sb, KERN_ERR, "Invalid block %x",
-				 blkstart);
+			f2fs_err(sbi, "Invalid block %x", blkstart);
 			return -EIO;
 		}
 		blkstart -= FDEV(devi).start_blk;
@@ -1754,10 +1774,9 @@ static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
 
 		if (sector & (bdev_zone_sectors(bdev) - 1) ||
 				nr_sects != bdev_zone_sectors(bdev)) {
-			f2fs_msg(sbi->sb, KERN_ERR,
-				"(%d) %s: Unaligned zone reset attempted (block %x + %x)",
-				devi, sbi->s_ndevs ? FDEV(devi).path: "",
-				blkstart, blklen);
+			f2fs_err(sbi, "(%d) %s: Unaligned zone reset attempted (block %x + %x)",
+				 devi, sbi->s_ndevs ? FDEV(devi).path : "",
+				 blkstart, blklen);
 			return -EIO;
 		}
 		trace_f2fs_issue_reset_zone(bdev, blkstart);
@@ -2121,15 +2140,14 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
 		mir_exist = f2fs_test_and_set_bit(offset,
 						se->cur_valid_map_mir);
 		if (unlikely(exist != mir_exist)) {
-			f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error "
-				"when setting bitmap, blk:%u, old bit:%d",
-				blkaddr, exist);
+			f2fs_err(sbi, "Inconsistent error when setting bitmap, blk:%u, old bit:%d",
+				 blkaddr, exist);
 			f2fs_bug_on(sbi, 1);
 		}
 #endif
 		if (unlikely(exist)) {
-			f2fs_msg(sbi->sb, KERN_ERR,
-				"Bitmap was wrongly set, blk:%u", blkaddr);
+			f2fs_err(sbi, "Bitmap was wrongly set, blk:%u",
+				 blkaddr);
 			f2fs_bug_on(sbi, 1);
 			se->valid_blocks--;
 			del = 0;
@@ -2150,15 +2168,14 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
 		mir_exist = f2fs_test_and_clear_bit(offset,
 						se->cur_valid_map_mir);
 		if (unlikely(exist != mir_exist)) {
-			f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error "
-				"when clearing bitmap, blk:%u, old bit:%d",
-				blkaddr, exist);
+			f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d",
+				 blkaddr, exist);
 			f2fs_bug_on(sbi, 1);
 		}
 #endif
 		if (unlikely(!exist)) {
-			f2fs_msg(sbi->sb, KERN_ERR,
-				"Bitmap was wrongly cleared, blk:%u", blkaddr);
+			f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u",
+				 blkaddr);
 			f2fs_bug_on(sbi, 1);
 			se->valid_blocks++;
 			del = 0;
@@ -2640,6 +2657,39 @@ static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
 	stat_inc_seg_type(sbi, curseg);
 }
 
+void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
+					unsigned int start, unsigned int end)
+{
+	struct curseg_info *curseg = CURSEG_I(sbi, type);
+	unsigned int segno;
+
+	down_read(&SM_I(sbi)->curseg_lock);
+	mutex_lock(&curseg->curseg_mutex);
+	down_write(&SIT_I(sbi)->sentry_lock);
+
+	segno = CURSEG_I(sbi, type)->segno;
+	if (segno < start || segno > end)
+		goto unlock;
+
+	if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type))
+		change_curseg(sbi, type);
+	else
+		new_curseg(sbi, type, true);
+
+	stat_inc_seg_type(sbi, curseg);
+
+	locate_dirty_segment(sbi, segno);
+unlock:
+	up_write(&SIT_I(sbi)->sentry_lock);
+
+	if (segno != curseg->segno)
+		f2fs_notice(sbi, "For resize: curseg of type %d: %u ==> %u",
+			    type, segno, curseg->segno);
+
+	mutex_unlock(&curseg->curseg_mutex);
+	up_read(&SM_I(sbi)->curseg_lock);
+}
+
 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
 {
 	struct curseg_info *curseg;
@@ -2772,9 +2822,8 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
 		goto out;
 
 	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"Found FS corruption, run fsck to fix.");
-		return -EIO;
+		f2fs_warn(sbi, "Found FS corruption, run fsck to fix.");
+		return -EFSCORRUPTED;
 	}
 
 	/* start/end segment number in main_area */
@@ -3197,12 +3246,17 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
 
 	if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		return -EFAULT;
+		f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
+			  __func__, segno);
+		return -EFSCORRUPTED;
 	}
 
 	stat_inc_inplace_blocks(fio->sbi);
 
-	err = f2fs_submit_page_bio(fio);
+	if (fio->bio)
+		err = f2fs_merge_page_bio(fio);
+	else
+		err = f2fs_submit_page_bio(fio);
 	if (!err) {
 		update_device_state(fio);
 		f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
@@ -3393,6 +3447,11 @@ static int read_compacted_summaries(struct f2fs_sb_info *sbi)
 		seg_i = CURSEG_I(sbi, i);
 		segno = le32_to_cpu(ckpt->cur_data_segno[i]);
 		blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]);
+		if (blk_off > ENTRIES_IN_SUM) {
+			f2fs_bug_on(sbi, 1);
+			f2fs_put_page(page, 1);
+			return -EFAULT;
+		}
 		seg_i->next_segno = segno;
 		reset_curseg(sbi, i, 0);
 		seg_i->alloc_type = ckpt->alloc_type[i];
@@ -3530,8 +3589,11 @@ static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
 
 	/* sanity check for summary blocks */
 	if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES ||
-			sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES)
+			sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) {
+		f2fs_err(sbi, "invalid journal entries nats %u sits %u\n",
+			 nats_in_cursum(nat_j), sits_in_cursum(sit_j));
 		return -EINVAL;
+	}
 
 	return 0;
 }
@@ -3762,7 +3824,7 @@ void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	struct f2fs_journal *journal = curseg->journal;
 	struct sit_entry_set *ses, *tmp;
 	struct list_head *head = &SM_I(sbi)->sit_entry_set;
-	bool to_journal = true;
+	bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS);
 	struct seg_entry *se;
 
 	down_write(&sit_i->sentry_lock);
@@ -3781,7 +3843,8 @@ void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	 * entries, remove all entries from journal and add and account
 	 * them in sit entry set.
 	 */
-	if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL))
+	if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) ||
+								!to_journal)
 		remove_sits_in_journal(sbi);
 
 	/*
@@ -4096,11 +4159,10 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
 
 		start = le32_to_cpu(segno_in_journal(journal, i));
 		if (start >= MAIN_SEGS(sbi)) {
-			f2fs_msg(sbi->sb, KERN_ERR,
-					"Wrong journal entry on segno %u",
-					start);
+			f2fs_err(sbi, "Wrong journal entry on segno %u",
+				 start);
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			err = -EINVAL;
+			err = -EFSCORRUPTED;
 			break;
 		}
 
@@ -4137,11 +4199,10 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
 	up_read(&curseg->journal_rwsem);
 
 	if (!err && total_node_blocks != valid_node_count(sbi)) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"SIT is corrupted node# %u vs %u",
-			total_node_blocks, valid_node_count(sbi));
+		f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
+			 total_node_blocks, valid_node_count(sbi));
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		err = -EINVAL;
+		err = -EFSCORRUPTED;
 	}
 
 	return err;
@@ -4232,6 +4293,39 @@ static int build_dirty_segmap(struct f2fs_sb_info *sbi)
 	return init_victim_secmap(sbi);
 }
 
+static int sanity_check_curseg(struct f2fs_sb_info *sbi)
+{
+	int i;
+
+	/*
+	 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
+	 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
+	 */
+	for (i = 0; i < NO_CHECK_TYPE; i++) {
+		struct curseg_info *curseg = CURSEG_I(sbi, i);
+		struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
+		unsigned int blkofs = curseg->next_blkoff;
+
+		if (f2fs_test_bit(blkofs, se->cur_valid_map))
+			goto out;
+
+		if (curseg->alloc_type == SSR)
+			continue;
+
+		for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) {
+			if (!f2fs_test_bit(blkofs, se->cur_valid_map))
+				continue;
+out:
+			f2fs_err(sbi,
+				 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
+				 i, curseg->segno, curseg->alloc_type,
+				 curseg->next_blkoff, blkofs);
+			return -EFSCORRUPTED;
+		}
+	}
+	return 0;
+}
+
 /*
  * Update min, max modified time for cost-benefit GC algorithm
  */
@@ -4327,6 +4421,10 @@ int f2fs_build_segment_manager(struct f2fs_sb_info *sbi)
 	if (err)
 		return err;
 
+	err = sanity_check_curseg(sbi);
+	if (err)
+		return err;
+
 	init_min_max_mtime(sbi);
 	return 0;
 }
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 429007b8036e..b74602813a05 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -109,7 +109,7 @@
 #define	START_SEGNO(segno)		\
 	(SIT_BLOCK_OFFSET(segno) * SIT_ENTRY_PER_BLOCK)
 #define SIT_BLK_CNT(sbi)			\
-	((MAIN_SEGS(sbi) + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK)
+	DIV_ROUND_UP(MAIN_SEGS(sbi), SIT_ENTRY_PER_BLOCK)
 #define f2fs_bitmap_size(nr)			\
 	(BITS_TO_LONGS(nr) * sizeof(unsigned long))
 
@@ -693,21 +693,19 @@ static inline int check_block_count(struct f2fs_sb_info *sbi,
 	} while (cur_pos < sbi->blocks_per_seg);
 
 	if (unlikely(GET_SIT_VBLOCKS(raw_sit) != valid_blocks)) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-				"Mismatch valid blocks %d vs. %d",
-					GET_SIT_VBLOCKS(raw_sit), valid_blocks);
+		f2fs_err(sbi, "Mismatch valid blocks %d vs. %d",
+			 GET_SIT_VBLOCKS(raw_sit), valid_blocks);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 
 	/* check segment usage, and check boundary of a given segment number */
 	if (unlikely(GET_SIT_VBLOCKS(raw_sit) > sbi->blocks_per_seg
 					|| segno > TOTAL_SEGS(sbi) - 1)) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-				"Wrong valid blocks %d or segno %u",
-					GET_SIT_VBLOCKS(raw_sit), segno);
+		f2fs_err(sbi, "Wrong valid blocks %d or segno %u",
+			 GET_SIT_VBLOCKS(raw_sit), segno);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 	return 0;
 }
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 6b959bbb336a..d95a681ef7c9 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -136,7 +136,10 @@ enum {
 	Opt_alloc,
 	Opt_fsync,
 	Opt_test_dummy_encryption,
-	Opt_checkpoint,
+	Opt_checkpoint_disable,
+	Opt_checkpoint_disable_cap,
+	Opt_checkpoint_disable_cap_perc,
+	Opt_checkpoint_enable,
 	Opt_err,
 };
 
@@ -195,45 +198,52 @@ static match_table_t f2fs_tokens = {
 	{Opt_alloc, "alloc_mode=%s"},
 	{Opt_fsync, "fsync_mode=%s"},
 	{Opt_test_dummy_encryption, "test_dummy_encryption"},
-	{Opt_checkpoint, "checkpoint=%s"},
+	{Opt_checkpoint_disable, "checkpoint=disable"},
+	{Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
+	{Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
+	{Opt_checkpoint_enable, "checkpoint=enable"},
 	{Opt_err, NULL},
 };
 
-void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
+void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
 {
 	struct va_format vaf;
 	va_list args;
+	int level;
 
 	va_start(args, fmt);
-	vaf.fmt = fmt;
+
+	level = printk_get_level(fmt);
+	vaf.fmt = printk_skip_level(fmt);
 	vaf.va = &args;
-	printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
+	printk("%c%cF2FS-fs (%s): %pV\n",
+	       KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
+
 	va_end(args);
 }
 
 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
 {
-	block_t limit = (sbi->user_block_count << 1) / 1000;
+	block_t limit = min((sbi->user_block_count << 1) / 1000,
+			sbi->user_block_count - sbi->reserved_blocks);
 
 	/* limit is 0.2% */
 	if (test_opt(sbi, RESERVE_ROOT) &&
 			F2FS_OPTION(sbi).root_reserved_blocks > limit) {
 		F2FS_OPTION(sbi).root_reserved_blocks = limit;
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"Reduce reserved blocks for root = %u",
-			F2FS_OPTION(sbi).root_reserved_blocks);
+		f2fs_info(sbi, "Reduce reserved blocks for root = %u",
+			  F2FS_OPTION(sbi).root_reserved_blocks);
 	}
 	if (!test_opt(sbi, RESERVE_ROOT) &&
 		(!uid_eq(F2FS_OPTION(sbi).s_resuid,
 				make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
 		!gid_eq(F2FS_OPTION(sbi).s_resgid,
 				make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
-				from_kuid_munged(&init_user_ns,
-					F2FS_OPTION(sbi).s_resuid),
-				from_kgid_munged(&init_user_ns,
-					F2FS_OPTION(sbi).s_resgid));
+		f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
+			  from_kuid_munged(&init_user_ns,
+					   F2FS_OPTION(sbi).s_resuid),
+			  from_kgid_munged(&init_user_ns,
+					   F2FS_OPTION(sbi).s_resgid));
 }
 
 static void init_once(void *foo)
@@ -254,35 +264,29 @@ static int f2fs_set_qf_name(struct super_block *sb, int qtype,
 	int ret = -EINVAL;
 
 	if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
-		f2fs_msg(sb, KERN_ERR,
-			"Cannot change journaled "
-			"quota options when quota turned on");
+		f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
 		return -EINVAL;
 	}
 	if (f2fs_sb_has_quota_ino(sbi)) {
-		f2fs_msg(sb, KERN_INFO,
-			"QUOTA feature is enabled, so ignore qf_name");
+		f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
 		return 0;
 	}
 
 	qname = match_strdup(args);
 	if (!qname) {
-		f2fs_msg(sb, KERN_ERR,
-			"Not enough memory for storing quotafile name");
+		f2fs_err(sbi, "Not enough memory for storing quotafile name");
 		return -ENOMEM;
 	}
 	if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
 		if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
 			ret = 0;
 		else
-			f2fs_msg(sb, KERN_ERR,
-				 "%s quota file already specified",
+			f2fs_err(sbi, "%s quota file already specified",
 				 QTYPE2NAME(qtype));
 		goto errout;
 	}
 	if (strchr(qname, '/')) {
-		f2fs_msg(sb, KERN_ERR,
-			"quotafile must be on filesystem root");
+		f2fs_err(sbi, "quotafile must be on filesystem root");
 		goto errout;
 	}
 	F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
@@ -298,8 +302,7 @@ static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
 	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 
 	if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
-		f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
-			" when quota turned on");
+		f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
 		return -EINVAL;
 	}
 	kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
@@ -315,8 +318,7 @@ static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
 	 * to support legacy quotas in quota files.
 	 */
 	if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
-		f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. "
-			 "Cannot enable project quota enforcement.");
+		f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
 		return -1;
 	}
 	if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
@@ -336,21 +338,18 @@ static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
 
 		if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
 				test_opt(sbi, PRJQUOTA)) {
-			f2fs_msg(sbi->sb, KERN_ERR, "old and new quota "
-					"format mixing");
+			f2fs_err(sbi, "old and new quota format mixing");
 			return -1;
 		}
 
 		if (!F2FS_OPTION(sbi).s_jquota_fmt) {
-			f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
-					"not specified");
+			f2fs_err(sbi, "journaled quota format not specified");
 			return -1;
 		}
 	}
 
 	if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"QUOTA feature is enabled, so ignore jquota_fmt");
+		f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
 		F2FS_OPTION(sbi).s_jquota_fmt = 0;
 	}
 	return 0;
@@ -418,8 +417,7 @@ static int parse_options(struct super_block *sb, char *options)
 			break;
 		case Opt_nodiscard:
 			if (f2fs_sb_has_blkzoned(sbi)) {
-				f2fs_msg(sb, KERN_WARNING,
-					"discard is required for zoned block devices");
+				f2fs_warn(sbi, "discard is required for zoned block devices");
 				return -EINVAL;
 			}
 			clear_opt(sbi, DISCARD);
@@ -451,20 +449,16 @@ static int parse_options(struct super_block *sb, char *options)
 			break;
 #else
 		case Opt_user_xattr:
-			f2fs_msg(sb, KERN_INFO,
-				"user_xattr options not supported");
+			f2fs_info(sbi, "user_xattr options not supported");
 			break;
 		case Opt_nouser_xattr:
-			f2fs_msg(sb, KERN_INFO,
-				"nouser_xattr options not supported");
+			f2fs_info(sbi, "nouser_xattr options not supported");
 			break;
 		case Opt_inline_xattr:
-			f2fs_msg(sb, KERN_INFO,
-				"inline_xattr options not supported");
+			f2fs_info(sbi, "inline_xattr options not supported");
 			break;
 		case Opt_noinline_xattr:
-			f2fs_msg(sb, KERN_INFO,
-				"noinline_xattr options not supported");
+			f2fs_info(sbi, "noinline_xattr options not supported");
 			break;
 #endif
 #ifdef CONFIG_F2FS_FS_POSIX_ACL
@@ -476,10 +470,10 @@ static int parse_options(struct super_block *sb, char *options)
 			break;
 #else
 		case Opt_acl:
-			f2fs_msg(sb, KERN_INFO, "acl options not supported");
+			f2fs_info(sbi, "acl options not supported");
 			break;
 		case Opt_noacl:
-			f2fs_msg(sb, KERN_INFO, "noacl options not supported");
+			f2fs_info(sbi, "noacl options not supported");
 			break;
 #endif
 		case Opt_active_logs:
@@ -529,9 +523,8 @@ static int parse_options(struct super_block *sb, char *options)
 			if (args->from && match_int(args, &arg))
 				return -EINVAL;
 			if (test_opt(sbi, RESERVE_ROOT)) {
-				f2fs_msg(sb, KERN_INFO,
-					"Preserve previous reserve_root=%u",
-					F2FS_OPTION(sbi).root_reserved_blocks);
+				f2fs_info(sbi, "Preserve previous reserve_root=%u",
+					  F2FS_OPTION(sbi).root_reserved_blocks);
 			} else {
 				F2FS_OPTION(sbi).root_reserved_blocks = arg;
 				set_opt(sbi, RESERVE_ROOT);
@@ -542,8 +535,7 @@ static int parse_options(struct super_block *sb, char *options)
 				return -EINVAL;
 			uid = make_kuid(current_user_ns(), arg);
 			if (!uid_valid(uid)) {
-				f2fs_msg(sb, KERN_ERR,
-					"Invalid uid value %d", arg);
+				f2fs_err(sbi, "Invalid uid value %d", arg);
 				return -EINVAL;
 			}
 			F2FS_OPTION(sbi).s_resuid = uid;
@@ -553,8 +545,7 @@ static int parse_options(struct super_block *sb, char *options)
 				return -EINVAL;
 			gid = make_kgid(current_user_ns(), arg);
 			if (!gid_valid(gid)) {
-				f2fs_msg(sb, KERN_ERR,
-					"Invalid gid value %d", arg);
+				f2fs_err(sbi, "Invalid gid value %d", arg);
 				return -EINVAL;
 			}
 			F2FS_OPTION(sbi).s_resgid = gid;
@@ -567,9 +558,7 @@ static int parse_options(struct super_block *sb, char *options)
 			if (strlen(name) == 8 &&
 					!strncmp(name, "adaptive", 8)) {
 				if (f2fs_sb_has_blkzoned(sbi)) {
-					f2fs_msg(sb, KERN_WARNING,
-						 "adaptive mode is not allowed with "
-						 "zoned block device feature");
+					f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
 					kvfree(name);
 					return -EINVAL;
 				}
@@ -587,9 +576,8 @@ static int parse_options(struct super_block *sb, char *options)
 			if (args->from && match_int(args, &arg))
 				return -EINVAL;
 			if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
-				f2fs_msg(sb, KERN_WARNING,
-					"Not support %d, larger than %d",
-					1 << arg, BIO_MAX_PAGES);
+				f2fs_warn(sbi, "Not support %d, larger than %d",
+					  1 << arg, BIO_MAX_PAGES);
 				return -EINVAL;
 			}
 			F2FS_OPTION(sbi).write_io_size_bits = arg;
@@ -610,13 +598,11 @@ static int parse_options(struct super_block *sb, char *options)
 			break;
 #else
 		case Opt_fault_injection:
-			f2fs_msg(sb, KERN_INFO,
-				"fault_injection options not supported");
+			f2fs_info(sbi, "fault_injection options not supported");
 			break;
 
 		case Opt_fault_type:
-			f2fs_msg(sb, KERN_INFO,
-				"fault_type options not supported");
+			f2fs_info(sbi, "fault_type options not supported");
 			break;
 #endif
 		case Opt_lazytime:
@@ -696,8 +682,7 @@ static int parse_options(struct super_block *sb, char *options)
 		case Opt_jqfmt_vfsv0:
 		case Opt_jqfmt_vfsv1:
 		case Opt_noquota:
-			f2fs_msg(sb, KERN_INFO,
-					"quota operations not supported");
+			f2fs_info(sbi, "quota operations not supported");
 			break;
 #endif
 		case Opt_whint:
@@ -759,39 +744,44 @@ static int parse_options(struct super_block *sb, char *options)
 		case Opt_test_dummy_encryption:
 #ifdef CONFIG_FS_ENCRYPTION
 			if (!f2fs_sb_has_encrypt(sbi)) {
-				f2fs_msg(sb, KERN_ERR, "Encrypt feature is off");
+				f2fs_err(sbi, "Encrypt feature is off");
 				return -EINVAL;
 			}
 
 			F2FS_OPTION(sbi).test_dummy_encryption = true;
-			f2fs_msg(sb, KERN_INFO,
-					"Test dummy encryption mode enabled");
+			f2fs_info(sbi, "Test dummy encryption mode enabled");
 #else
-			f2fs_msg(sb, KERN_INFO,
-					"Test dummy encryption mount option ignored");
+			f2fs_info(sbi, "Test dummy encryption mount option ignored");
 #endif
 			break;
-		case Opt_checkpoint:
-			name = match_strdup(&args[0]);
-			if (!name)
-				return -ENOMEM;
-
-			if (strlen(name) == 6 &&
-					!strncmp(name, "enable", 6)) {
-				clear_opt(sbi, DISABLE_CHECKPOINT);
-			} else if (strlen(name) == 7 &&
-					!strncmp(name, "disable", 7)) {
-				set_opt(sbi, DISABLE_CHECKPOINT);
-			} else {
-				kvfree(name);
+		case Opt_checkpoint_disable_cap_perc:
+			if (args->from && match_int(args, &arg))
 				return -EINVAL;
-			}
-			kvfree(name);
+			if (arg < 0 || arg > 100)
+				return -EINVAL;
+			if (arg == 100)
+				F2FS_OPTION(sbi).unusable_cap =
+					sbi->user_block_count;
+			else
+				F2FS_OPTION(sbi).unusable_cap =
+					(sbi->user_block_count / 100) *	arg;
+			set_opt(sbi, DISABLE_CHECKPOINT);
+			break;
+		case Opt_checkpoint_disable_cap:
+			if (args->from && match_int(args, &arg))
+				return -EINVAL;
+			F2FS_OPTION(sbi).unusable_cap = arg;
+			set_opt(sbi, DISABLE_CHECKPOINT);
+			break;
+		case Opt_checkpoint_disable:
+			set_opt(sbi, DISABLE_CHECKPOINT);
+			break;
+		case Opt_checkpoint_enable:
+			clear_opt(sbi, DISABLE_CHECKPOINT);
 			break;
 		default:
-			f2fs_msg(sb, KERN_ERR,
-				"Unrecognized mount option \"%s\" or missing value",
-				p);
+			f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
+				 p);
 			return -EINVAL;
 		}
 	}
@@ -800,23 +790,18 @@ static int parse_options(struct super_block *sb, char *options)
 		return -EINVAL;
 #else
 	if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-			 "Filesystem with quota feature cannot be mounted RDWR "
-			 "without CONFIG_QUOTA");
+		f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
 		return -EINVAL;
 	}
 	if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
-		f2fs_msg(sb, KERN_ERR,
-			"Filesystem with project quota feature cannot be "
-			"mounted RDWR without CONFIG_QUOTA");
+		f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
 		return -EINVAL;
 	}
 #endif
 
 	if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
-		f2fs_msg(sb, KERN_ERR,
-				"Should set mode=lfs with %uKB-sized IO",
-				F2FS_IO_SIZE_KB(sbi));
+		f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
+			 F2FS_IO_SIZE_KB(sbi));
 		return -EINVAL;
 	}
 
@@ -825,15 +810,11 @@ static int parse_options(struct super_block *sb, char *options)
 
 		if (!f2fs_sb_has_extra_attr(sbi) ||
 			!f2fs_sb_has_flexible_inline_xattr(sbi)) {
-			f2fs_msg(sb, KERN_ERR,
-					"extra_attr or flexible_inline_xattr "
-					"feature is off");
+			f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
 			return -EINVAL;
 		}
 		if (!test_opt(sbi, INLINE_XATTR)) {
-			f2fs_msg(sb, KERN_ERR,
-					"inline_xattr_size option should be "
-					"set with inline_xattr option");
+			f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
 			return -EINVAL;
 		}
 
@@ -842,16 +823,14 @@ static int parse_options(struct super_block *sb, char *options)
 
 		if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
 				F2FS_OPTION(sbi).inline_xattr_size > max_size) {
-			f2fs_msg(sb, KERN_ERR,
-				"inline xattr size is out of range: %d ~ %d",
-				min_size, max_size);
+			f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
+				 min_size, max_size);
 			return -EINVAL;
 		}
 	}
 
 	if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
-		f2fs_msg(sb, KERN_ERR,
-				"LFS not compatible with checkpoint=disable\n");
+		f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
 		return -EINVAL;
 	}
 
@@ -1313,6 +1292,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 		seq_puts(seq, ",disable_roll_forward");
 	if (test_opt(sbi, DISCARD))
 		seq_puts(seq, ",discard");
+	else
+		seq_puts(seq, ",nodiscard");
 	if (test_opt(sbi, NOHEAP))
 		seq_puts(seq, ",no_heap");
 	else
@@ -1409,8 +1390,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 		seq_printf(seq, ",alloc_mode=%s", "reuse");
 
 	if (test_opt(sbi, DISABLE_CHECKPOINT))
-		seq_puts(seq, ",checkpoint=disable");
-
+		seq_printf(seq, ",checkpoint=disable:%u",
+				F2FS_OPTION(sbi).unusable_cap);
 	if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
 		seq_printf(seq, ",fsync_mode=%s", "posix");
 	else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
@@ -1439,6 +1420,7 @@ static void default_options(struct f2fs_sb_info *sbi)
 	set_opt(sbi, EXTENT_CACHE);
 	set_opt(sbi, NOHEAP);
 	clear_opt(sbi, DISABLE_CHECKPOINT);
+	F2FS_OPTION(sbi).unusable_cap = 0;
 	sbi->sb->s_flags |= SB_LAZYTIME;
 	set_opt(sbi, FLUSH_MERGE);
 	set_opt(sbi, DISCARD);
@@ -1467,10 +1449,10 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
 	struct cp_control cpc;
 	int err = 0;
 	int ret;
+	block_t unusable;
 
 	if (s_flags & SB_RDONLY) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-				"checkpoint=disable on readonly fs");
+		f2fs_err(sbi, "checkpoint=disable on readonly fs");
 		return -EINVAL;
 	}
 	sbi->sb->s_flags |= SB_ACTIVE;
@@ -1494,7 +1476,8 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
 		goto restore_flag;
 	}
 
-	if (f2fs_disable_cp_again(sbi)) {
+	unusable = f2fs_get_unusable_blocks(sbi);
+	if (f2fs_disable_cp_again(sbi, unusable)) {
 		err = -EAGAIN;
 		goto restore_flag;
 	}
@@ -1507,7 +1490,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
 		goto out_unlock;
 
 	spin_lock(&sbi->stat_lock);
-	sbi->unusable_block_count = 0;
+	sbi->unusable_block_count = unusable;
 	spin_unlock(&sbi->stat_lock);
 
 out_unlock:
@@ -1572,8 +1555,8 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	/* recover superblocks we couldn't write due to previous RO mount */
 	if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
 		err = f2fs_commit_super(sbi, false);
-		f2fs_msg(sb, KERN_INFO,
-			"Try to recover all the superblocks, ret: %d", err);
+		f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
+			  err);
 		if (!err)
 			clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
 	}
@@ -1614,15 +1597,13 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	/* disallow enable/disable extent_cache dynamically */
 	if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
 		err = -EINVAL;
-		f2fs_msg(sbi->sb, KERN_WARNING,
-				"switch extent_cache option is not allowed");
+		f2fs_warn(sbi, "switch extent_cache option is not allowed");
 		goto restore_opts;
 	}
 
 	if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
 		err = -EINVAL;
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"disabling checkpoint not compatible with read-only");
+		f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
 		goto restore_opts;
 	}
 
@@ -1692,8 +1673,7 @@ skip:
 restore_gc:
 	if (need_restart_gc) {
 		if (f2fs_start_gc_thread(sbi))
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"background gc thread has stopped");
+			f2fs_warn(sbi, "background gc thread has stopped");
 	} else if (need_stop_gc) {
 		f2fs_stop_gc_thread(sbi);
 	}
@@ -1832,8 +1812,7 @@ static qsize_t *f2fs_get_reserved_space(struct inode *inode)
 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
 {
 	if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"quota sysfile may be corrupted, skip loading it");
+		f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
 		return 0;
 	}
 
@@ -1849,8 +1828,7 @@ int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
 	if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
 		err = f2fs_enable_quotas(sbi->sb);
 		if (err) {
-			f2fs_msg(sbi->sb, KERN_ERR,
-					"Cannot turn on quota_ino: %d", err);
+			f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
 			return 0;
 		}
 		return 1;
@@ -1863,8 +1841,8 @@ int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
 				enabled = 1;
 				continue;
 			}
-			f2fs_msg(sbi->sb, KERN_ERR,
-				"Cannot turn on quotas: %d on %d", err, i);
+			f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
+				 err, i);
 		}
 	}
 	return enabled;
@@ -1885,8 +1863,7 @@ static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
 
 	qf_inode = f2fs_iget(sb, qf_inum);
 	if (IS_ERR(qf_inode)) {
-		f2fs_msg(sb, KERN_ERR,
-			"Bad quota inode %u:%lu", type, qf_inum);
+		f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
 		return PTR_ERR(qf_inode);
 	}
 
@@ -1899,17 +1876,17 @@ static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
 
 static int f2fs_enable_quotas(struct super_block *sb)
 {
+	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	int type, err = 0;
 	unsigned long qf_inum;
 	bool quota_mopt[MAXQUOTAS] = {
-		test_opt(F2FS_SB(sb), USRQUOTA),
-		test_opt(F2FS_SB(sb), GRPQUOTA),
-		test_opt(F2FS_SB(sb), PRJQUOTA),
+		test_opt(sbi, USRQUOTA),
+		test_opt(sbi, GRPQUOTA),
+		test_opt(sbi, PRJQUOTA),
 	};
 
 	if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
-		f2fs_msg(sb, KERN_ERR,
-			"quota file may be corrupted, skip loading it");
+		f2fs_err(sbi, "quota file may be corrupted, skip loading it");
 		return 0;
 	}
 
@@ -1922,10 +1899,8 @@ static int f2fs_enable_quotas(struct super_block *sb)
 				DQUOT_USAGE_ENABLED |
 				(quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
 			if (err) {
-				f2fs_msg(sb, KERN_ERR,
-					"Failed to enable quota tracking "
-					"(type=%d, err=%d). Please run "
-					"fsck to fix.", type, err);
+				f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
+					 type, err);
 				for (type--; type >= 0; type--)
 					dquot_quota_off(sb, type);
 				set_sbi_flag(F2FS_SB(sb),
@@ -1944,6 +1919,18 @@ int f2fs_quota_sync(struct super_block *sb, int type)
 	int cnt;
 	int ret;
 
+	/*
+	 * do_quotactl
+	 *  f2fs_quota_sync
+	 *  down_read(quota_sem)
+	 *  dquot_writeback_dquots()
+	 *  f2fs_dquot_commit
+	 *                            block_operation
+	 *                            down_read(quota_sem)
+	 */
+	f2fs_lock_op(sbi);
+
+	down_read(&sbi->quota_sem);
 	ret = dquot_writeback_dquots(sb, type);
 	if (ret)
 		goto out;
@@ -1981,6 +1968,8 @@ int f2fs_quota_sync(struct super_block *sb, int type)
 out:
 	if (ret)
 		set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
+	up_read(&sbi->quota_sem);
+	f2fs_unlock_op(sbi);
 	return ret;
 }
 
@@ -2045,10 +2034,8 @@ void f2fs_quota_off_umount(struct super_block *sb)
 		if (err) {
 			int ret = dquot_quota_off(sb, type);
 
-			f2fs_msg(sb, KERN_ERR,
-				"Fail to turn off disk quota "
-				"(type: %d, err: %d, ret:%d), Please "
-				"run fsck to fix it.", type, err, ret);
+			f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
+				 type, err, ret);
 			set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
 		}
 	}
@@ -2074,32 +2061,40 @@ static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
 
 static int f2fs_dquot_commit(struct dquot *dquot)
 {
+	struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
 	int ret;
 
+	down_read(&sbi->quota_sem);
 	ret = dquot_commit(dquot);
 	if (ret < 0)
-		set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
+		set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+	up_read(&sbi->quota_sem);
 	return ret;
 }
 
 static int f2fs_dquot_acquire(struct dquot *dquot)
 {
+	struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
 	int ret;
 
+	down_read(&sbi->quota_sem);
 	ret = dquot_acquire(dquot);
 	if (ret < 0)
-		set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
-
+		set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+	up_read(&sbi->quota_sem);
 	return ret;
 }
 
 static int f2fs_dquot_release(struct dquot *dquot)
 {
+	struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
 	int ret;
 
+	down_read(&sbi->quota_sem);
 	ret = dquot_release(dquot);
 	if (ret < 0)
-		set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
+		set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+	up_read(&sbi->quota_sem);
 	return ret;
 }
 
@@ -2109,22 +2104,27 @@ static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
 	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	int ret;
 
+	down_read(&sbi->quota_sem);
 	ret = dquot_mark_dquot_dirty(dquot);
 
 	/* if we are using journalled quota */
 	if (is_journalled_quota(sbi))
 		set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
 
+	up_read(&sbi->quota_sem);
 	return ret;
 }
 
 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
 {
+	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	int ret;
 
+	down_read(&sbi->quota_sem);
 	ret = dquot_commit_info(sb, type);
 	if (ret < 0)
-		set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
+		set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+	up_read(&sbi->quota_sem);
 	return ret;
 }
 
@@ -2341,55 +2341,49 @@ static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
 				(segment_count << log_blocks_per_seg);
 
 	if (segment0_blkaddr != cp_blkaddr) {
-		f2fs_msg(sb, KERN_INFO,
-			"Mismatch start address, segment0(%u) cp_blkaddr(%u)",
-			segment0_blkaddr, cp_blkaddr);
+		f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
+			  segment0_blkaddr, cp_blkaddr);
 		return true;
 	}
 
 	if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
 							sit_blkaddr) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong CP boundary, start(%u) end(%u) blocks(%u)",
-			cp_blkaddr, sit_blkaddr,
-			segment_count_ckpt << log_blocks_per_seg);
+		f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
+			  cp_blkaddr, sit_blkaddr,
+			  segment_count_ckpt << log_blocks_per_seg);
 		return true;
 	}
 
 	if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
 							nat_blkaddr) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
-			sit_blkaddr, nat_blkaddr,
-			segment_count_sit << log_blocks_per_seg);
+		f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
+			  sit_blkaddr, nat_blkaddr,
+			  segment_count_sit << log_blocks_per_seg);
 		return true;
 	}
 
 	if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
 							ssa_blkaddr) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
-			nat_blkaddr, ssa_blkaddr,
-			segment_count_nat << log_blocks_per_seg);
+		f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
+			  nat_blkaddr, ssa_blkaddr,
+			  segment_count_nat << log_blocks_per_seg);
 		return true;
 	}
 
 	if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
 							main_blkaddr) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
-			ssa_blkaddr, main_blkaddr,
-			segment_count_ssa << log_blocks_per_seg);
+		f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
+			  ssa_blkaddr, main_blkaddr,
+			  segment_count_ssa << log_blocks_per_seg);
 		return true;
 	}
 
 	if (main_end_blkaddr > seg_end_blkaddr) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
-			main_blkaddr,
-			segment0_blkaddr +
-				(segment_count << log_blocks_per_seg),
-			segment_count_main << log_blocks_per_seg);
+		f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
+			  main_blkaddr,
+			  segment0_blkaddr +
+			  (segment_count << log_blocks_per_seg),
+			  segment_count_main << log_blocks_per_seg);
 		return true;
 	} else if (main_end_blkaddr < seg_end_blkaddr) {
 		int err = 0;
@@ -2406,12 +2400,11 @@ static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
 			err = __f2fs_commit_super(bh, NULL);
 			res = err ? "failed" : "done";
 		}
-		f2fs_msg(sb, KERN_INFO,
-			"Fix alignment : %s, start(%u) end(%u) block(%u)",
-			res, main_blkaddr,
-			segment0_blkaddr +
-				(segment_count << log_blocks_per_seg),
-			segment_count_main << log_blocks_per_seg);
+		f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
+			  res, main_blkaddr,
+			  segment0_blkaddr +
+			  (segment_count << log_blocks_per_seg),
+			  segment_count_main << log_blocks_per_seg);
 		if (err)
 			return true;
 	}
@@ -2425,7 +2418,6 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 	block_t total_sections, blocks_per_seg;
 	struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
 					(bh->b_data + F2FS_SUPER_OFFSET);
-	struct super_block *sb = sbi->sb;
 	unsigned int blocksize;
 	size_t crc_offset = 0;
 	__u32 crc = 0;
@@ -2435,48 +2427,42 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 		crc_offset = le32_to_cpu(raw_super->checksum_offset);
 		if (crc_offset !=
 			offsetof(struct f2fs_super_block, crc)) {
-			f2fs_msg(sb, KERN_INFO,
-				"Invalid SB checksum offset: %zu",
-				crc_offset);
+			f2fs_info(sbi, "Invalid SB checksum offset: %zu",
+				  crc_offset);
 			return 1;
 		}
 		crc = le32_to_cpu(raw_super->crc);
 		if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
-			f2fs_msg(sb, KERN_INFO,
-				"Invalid SB checksum value: %u", crc);
+			f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
 			return 1;
 		}
 	}
 
 	if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
-		f2fs_msg(sb, KERN_INFO,
-			"Magic Mismatch, valid(0x%x) - read(0x%x)",
-			F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
+		f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
+			  F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
 		return 1;
 	}
 
 	/* Currently, support only 4KB page cache size */
 	if (F2FS_BLKSIZE != PAGE_SIZE) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid page_cache_size (%lu), supports only 4KB",
-			PAGE_SIZE);
+		f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
+			  PAGE_SIZE);
 		return 1;
 	}
 
 	/* Currently, support only 4KB block size */
 	blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
 	if (blocksize != F2FS_BLKSIZE) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid blocksize (%u), supports only 4KB",
-			blocksize);
+		f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
+			  blocksize);
 		return 1;
 	}
 
 	/* check log blocks per segment */
 	if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid log blocks per segment (%u)",
-			le32_to_cpu(raw_super->log_blocks_per_seg));
+		f2fs_info(sbi, "Invalid log blocks per segment (%u)",
+			  le32_to_cpu(raw_super->log_blocks_per_seg));
 		return 1;
 	}
 
@@ -2485,17 +2471,16 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 				F2FS_MAX_LOG_SECTOR_SIZE ||
 		le32_to_cpu(raw_super->log_sectorsize) <
 				F2FS_MIN_LOG_SECTOR_SIZE) {
-		f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
-			le32_to_cpu(raw_super->log_sectorsize));
+		f2fs_info(sbi, "Invalid log sectorsize (%u)",
+			  le32_to_cpu(raw_super->log_sectorsize));
 		return 1;
 	}
 	if (le32_to_cpu(raw_super->log_sectors_per_block) +
 		le32_to_cpu(raw_super->log_sectorsize) !=
 			F2FS_MAX_LOG_SECTOR_SIZE) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid log sectors per block(%u) log sectorsize(%u)",
-			le32_to_cpu(raw_super->log_sectors_per_block),
-			le32_to_cpu(raw_super->log_sectorsize));
+		f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
+			  le32_to_cpu(raw_super->log_sectors_per_block),
+			  le32_to_cpu(raw_super->log_sectorsize));
 		return 1;
 	}
 
@@ -2509,59 +2494,51 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 
 	if (segment_count > F2FS_MAX_SEGMENT ||
 				segment_count < F2FS_MIN_SEGMENTS) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid segment count (%u)",
-			segment_count);
+		f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
 		return 1;
 	}
 
 	if (total_sections > segment_count ||
 			total_sections < F2FS_MIN_SEGMENTS ||
 			segs_per_sec > segment_count || !segs_per_sec) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid segment/section count (%u, %u x %u)",
-			segment_count, total_sections, segs_per_sec);
+		f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
+			  segment_count, total_sections, segs_per_sec);
 		return 1;
 	}
 
 	if ((segment_count / segs_per_sec) < total_sections) {
-		f2fs_msg(sb, KERN_INFO,
-			"Small segment_count (%u < %u * %u)",
-			segment_count, segs_per_sec, total_sections);
+		f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
+			  segment_count, segs_per_sec, total_sections);
 		return 1;
 	}
 
 	if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong segment_count / block_count (%u > %llu)",
-			segment_count, le64_to_cpu(raw_super->block_count));
+		f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
+			  segment_count, le64_to_cpu(raw_super->block_count));
 		return 1;
 	}
 
 	if (secs_per_zone > total_sections || !secs_per_zone) {
-		f2fs_msg(sb, KERN_INFO,
-			"Wrong secs_per_zone / total_sections (%u, %u)",
-			secs_per_zone, total_sections);
+		f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
+			  secs_per_zone, total_sections);
 		return 1;
 	}
 	if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
 			raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
 			(le32_to_cpu(raw_super->extension_count) +
 			raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
-		f2fs_msg(sb, KERN_INFO,
-			"Corrupted extension count (%u + %u > %u)",
-			le32_to_cpu(raw_super->extension_count),
-			raw_super->hot_ext_count,
-			F2FS_MAX_EXTENSION);
+		f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
+			  le32_to_cpu(raw_super->extension_count),
+			  raw_super->hot_ext_count,
+			  F2FS_MAX_EXTENSION);
 		return 1;
 	}
 
 	if (le32_to_cpu(raw_super->cp_payload) >
 				(blocks_per_seg - F2FS_CP_PACKS)) {
-		f2fs_msg(sb, KERN_INFO,
-			"Insane cp_payload (%u > %u)",
-			le32_to_cpu(raw_super->cp_payload),
-			blocks_per_seg - F2FS_CP_PACKS);
+		f2fs_info(sbi, "Insane cp_payload (%u > %u)",
+			  le32_to_cpu(raw_super->cp_payload),
+			  blocks_per_seg - F2FS_CP_PACKS);
 		return 1;
 	}
 
@@ -2569,11 +2546,10 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 	if (le32_to_cpu(raw_super->node_ino) != 1 ||
 		le32_to_cpu(raw_super->meta_ino) != 2 ||
 		le32_to_cpu(raw_super->root_ino) != 3) {
-		f2fs_msg(sb, KERN_INFO,
-			"Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
-			le32_to_cpu(raw_super->node_ino),
-			le32_to_cpu(raw_super->meta_ino),
-			le32_to_cpu(raw_super->root_ino));
+		f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
+			  le32_to_cpu(raw_super->node_ino),
+			  le32_to_cpu(raw_super->meta_ino),
+			  le32_to_cpu(raw_super->root_ino));
 		return 1;
 	}
 
@@ -2617,8 +2593,7 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 
 	if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
 			ovp_segments == 0 || reserved_segments == 0)) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"Wrong layout: check mkfs.f2fs version");
+		f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
 		return 1;
 	}
 
@@ -2627,16 +2602,15 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 	log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
 	if (!user_block_count || user_block_count >=
 			segment_count_main << log_blocks_per_seg) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"Wrong user_block_count: %u", user_block_count);
+		f2fs_err(sbi, "Wrong user_block_count: %u",
+			 user_block_count);
 		return 1;
 	}
 
 	valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
 	if (valid_user_blocks > user_block_count) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"Wrong valid_user_blocks: %u, user_block_count: %u",
-			valid_user_blocks, user_block_count);
+		f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
+			 valid_user_blocks, user_block_count);
 		return 1;
 	}
 
@@ -2644,9 +2618,8 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 	avail_node_count = sbi->total_node_count - sbi->nquota_files -
 						F2FS_RESERVED_NODE_NUM;
 	if (valid_node_count > avail_node_count) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"Wrong valid_node_count: %u, avail_node_count: %u",
-			valid_node_count, avail_node_count);
+		f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
+			 valid_node_count, avail_node_count);
 		return 1;
 	}
 
@@ -2660,10 +2633,9 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 		for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
 			if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
 				le32_to_cpu(ckpt->cur_node_segno[j])) {
-				f2fs_msg(sbi->sb, KERN_ERR,
-					"Node segment (%u, %u) has the same "
-					"segno: %u", i, j,
-					le32_to_cpu(ckpt->cur_node_segno[i]));
+				f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
+					 i, j,
+					 le32_to_cpu(ckpt->cur_node_segno[i]));
 				return 1;
 			}
 		}
@@ -2675,10 +2647,9 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 		for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
 			if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
 				le32_to_cpu(ckpt->cur_data_segno[j])) {
-				f2fs_msg(sbi->sb, KERN_ERR,
-					"Data segment (%u, %u) has the same "
-					"segno: %u", i, j,
-					le32_to_cpu(ckpt->cur_data_segno[i]));
+				f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
+					 i, j,
+					 le32_to_cpu(ckpt->cur_data_segno[i]));
 				return 1;
 			}
 		}
@@ -2687,10 +2658,9 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 		for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
 			if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
 				le32_to_cpu(ckpt->cur_data_segno[j])) {
-				f2fs_msg(sbi->sb, KERN_ERR,
-					"Data segment (%u) and Data segment (%u)"
-					" has the same segno: %u", i, j,
-					le32_to_cpu(ckpt->cur_node_segno[i]));
+				f2fs_err(sbi, "Data segment (%u) and Data segment (%u) has the same segno: %u",
+					 i, j,
+					 le32_to_cpu(ckpt->cur_node_segno[i]));
 				return 1;
 			}
 		}
@@ -2701,9 +2671,8 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 
 	if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
 		nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"Wrong bitmap size: sit: %u, nat:%u",
-			sit_bitmap_size, nat_bitmap_size);
+		f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
+			 sit_bitmap_size, nat_bitmap_size);
 		return 1;
 	}
 
@@ -2712,14 +2681,22 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 	if (cp_pack_start_sum < cp_payload + 1 ||
 		cp_pack_start_sum > blocks_per_seg - 1 -
 			NR_CURSEG_TYPE) {
-		f2fs_msg(sbi->sb, KERN_ERR,
-			"Wrong cp_pack_start_sum: %u",
-			cp_pack_start_sum);
+		f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
+			 cp_pack_start_sum);
+		return 1;
+	}
+
+	if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
+		le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
+		f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
+			  "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
+			  "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
+			  le32_to_cpu(ckpt->checksum_offset));
 		return 1;
 	}
 
 	if (unlikely(f2fs_cp_error(sbi))) {
-		f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
+		f2fs_err(sbi, "A bug case: need to run fsck");
 		return 1;
 	}
 	return 0;
@@ -2888,18 +2865,17 @@ static int read_raw_super_block(struct f2fs_sb_info *sbi,
 	for (block = 0; block < 2; block++) {
 		bh = sb_bread(sb, block);
 		if (!bh) {
-			f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
-				block + 1);
+			f2fs_err(sbi, "Unable to read %dth superblock",
+				 block + 1);
 			err = -EIO;
 			continue;
 		}
 
 		/* sanity checking of raw super */
 		if (sanity_check_raw_super(sbi, bh)) {
-			f2fs_msg(sb, KERN_ERR,
-				"Can't find valid F2FS filesystem in %dth superblock",
-				block + 1);
-			err = -EINVAL;
+			f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
+				 block + 1);
+			err = -EFSCORRUPTED;
 			brelse(bh);
 			continue;
 		}
@@ -3028,36 +3004,32 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
 #ifdef CONFIG_BLK_DEV_ZONED
 		if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
 				!f2fs_sb_has_blkzoned(sbi)) {
-			f2fs_msg(sbi->sb, KERN_ERR,
-				"Zoned block device feature not enabled\n");
+			f2fs_err(sbi, "Zoned block device feature not enabled\n");
 			return -EINVAL;
 		}
 		if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
 			if (init_blkz_info(sbi, i)) {
-				f2fs_msg(sbi->sb, KERN_ERR,
-					"Failed to initialize F2FS blkzone information");
+				f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
 				return -EINVAL;
 			}
 			if (max_devices == 1)
 				break;
-			f2fs_msg(sbi->sb, KERN_INFO,
-				"Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
-				i, FDEV(i).path,
-				FDEV(i).total_segments,
-				FDEV(i).start_blk, FDEV(i).end_blk,
-				bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
-				"Host-aware" : "Host-managed");
+			f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
+				  i, FDEV(i).path,
+				  FDEV(i).total_segments,
+				  FDEV(i).start_blk, FDEV(i).end_blk,
+				  bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
+				  "Host-aware" : "Host-managed");
 			continue;
 		}
 #endif
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"Mount Device [%2d]: %20s, %8u, %8x - %8x",
-				i, FDEV(i).path,
-				FDEV(i).total_segments,
-				FDEV(i).start_blk, FDEV(i).end_blk);
-	}
-	f2fs_msg(sbi->sb, KERN_INFO,
-			"IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
+		f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
+			  i, FDEV(i).path,
+			  FDEV(i).total_segments,
+			  FDEV(i).start_blk, FDEV(i).end_blk);
+	}
+	f2fs_info(sbi,
+		  "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
 	return 0;
 }
 
@@ -3103,7 +3075,7 @@ try_onemore:
 	/* Load the checksum driver */
 	sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
 	if (IS_ERR(sbi->s_chksum_driver)) {
-		f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
+		f2fs_err(sbi, "Cannot load crc32 driver.");
 		err = PTR_ERR(sbi->s_chksum_driver);
 		sbi->s_chksum_driver = NULL;
 		goto free_sbi;
@@ -3111,7 +3083,7 @@ try_onemore:
 
 	/* set a block size */
 	if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
-		f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
+		f2fs_err(sbi, "unable to set blocksize");
 		goto free_sbi;
 	}
 
@@ -3135,8 +3107,7 @@ try_onemore:
 	 */
 #ifndef CONFIG_BLK_DEV_ZONED
 	if (f2fs_sb_has_blkzoned(sbi)) {
-		f2fs_msg(sb, KERN_ERR,
-			 "Zoned block device support is not enabled");
+		f2fs_err(sbi, "Zoned block device support is not enabled");
 		err = -EOPNOTSUPP;
 		goto free_sb_buf;
 	}
@@ -3160,10 +3131,7 @@ try_onemore:
 
 #ifdef CONFIG_QUOTA
 	sb->dq_op = &f2fs_quota_operations;
-	if (f2fs_sb_has_quota_ino(sbi))
-		sb->s_qcop = &dquot_quotactl_sysfile_ops;
-	else
-		sb->s_qcop = &f2fs_quotactl_ops;
+	sb->s_qcop = &f2fs_quotactl_ops;
 	sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
 
 	if (f2fs_sb_has_quota_ino(sbi)) {
@@ -3192,6 +3160,7 @@ try_onemore:
 	mutex_init(&sbi->gc_mutex);
 	mutex_init(&sbi->writepages);
 	mutex_init(&sbi->cp_mutex);
+	mutex_init(&sbi->resize_mutex);
 	init_rwsem(&sbi->node_write);
 	init_rwsem(&sbi->node_change);
 
@@ -3227,6 +3196,7 @@ try_onemore:
 	}
 
 	init_rwsem(&sbi->cp_rwsem);
+	init_rwsem(&sbi->quota_sem);
 	init_waitqueue_head(&sbi->cp_wait);
 	init_sb_info(sbi);
 
@@ -3246,14 +3216,14 @@ try_onemore:
 	/* get an inode for meta space */
 	sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
 	if (IS_ERR(sbi->meta_inode)) {
-		f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
+		f2fs_err(sbi, "Failed to read F2FS meta data inode");
 		err = PTR_ERR(sbi->meta_inode);
 		goto free_io_dummy;
 	}
 
 	err = f2fs_get_valid_checkpoint(sbi);
 	if (err) {
-		f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
+		f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
 		goto free_meta_inode;
 	}
 
@@ -3264,10 +3234,13 @@ try_onemore:
 		sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
 	}
 
+	if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+
 	/* Initialize device list */
 	err = f2fs_scan_devices(sbi);
 	if (err) {
-		f2fs_msg(sb, KERN_ERR, "Failed to find devices");
+		f2fs_err(sbi, "Failed to find devices");
 		goto free_devices;
 	}
 
@@ -3287,6 +3260,7 @@ try_onemore:
 		INIT_LIST_HEAD(&sbi->inode_list[i]);
 		spin_lock_init(&sbi->inode_lock[i]);
 	}
+	mutex_init(&sbi->flush_lock);
 
 	f2fs_init_extent_cache_info(sbi);
 
@@ -3297,14 +3271,14 @@ try_onemore:
 	/* setup f2fs internal modules */
 	err = f2fs_build_segment_manager(sbi);
 	if (err) {
-		f2fs_msg(sb, KERN_ERR,
-			"Failed to initialize F2FS segment manager");
+		f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
+			 err);
 		goto free_sm;
 	}
 	err = f2fs_build_node_manager(sbi);
 	if (err) {
-		f2fs_msg(sb, KERN_ERR,
-			"Failed to initialize F2FS node manager");
+		f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
+			 err);
 		goto free_nm;
 	}
 
@@ -3329,7 +3303,7 @@ try_onemore:
 	/* get an inode for node space */
 	sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
 	if (IS_ERR(sbi->node_inode)) {
-		f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
+		f2fs_err(sbi, "Failed to read node inode");
 		err = PTR_ERR(sbi->node_inode);
 		goto free_stats;
 	}
@@ -3337,7 +3311,7 @@ try_onemore:
 	/* read root inode and dentry */
 	root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
 	if (IS_ERR(root)) {
-		f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
+		f2fs_err(sbi, "Failed to read root inode");
 		err = PTR_ERR(root);
 		goto free_node_inode;
 	}
@@ -3363,8 +3337,7 @@ try_onemore:
 	if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
 		err = f2fs_enable_quotas(sb);
 		if (err)
-			f2fs_msg(sb, KERN_ERR,
-				"Cannot turn on quotas: error %d", err);
+			f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
 	}
 #endif
 	/* if there are nt orphan nodes free them */
@@ -3384,13 +3357,10 @@ try_onemore:
 		if (f2fs_hw_is_readonly(sbi)) {
 			if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
 				err = -EROFS;
-				f2fs_msg(sb, KERN_ERR,
-					"Need to recover fsync data, but "
-					"write access unavailable");
+				f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
 				goto free_meta;
 			}
-			f2fs_msg(sbi->sb, KERN_INFO, "write access "
-				"unavailable, skipping recovery");
+			f2fs_info(sbi, "write access unavailable, skipping recovery");
 			goto reset_checkpoint;
 		}
 
@@ -3405,8 +3375,8 @@ try_onemore:
 			if (err != -ENOMEM)
 				skip_recovery = true;
 			need_fsck = true;
-			f2fs_msg(sb, KERN_ERR,
-				"Cannot recover all fsync data errno=%d", err);
+			f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
+				 err);
 			goto free_meta;
 		}
 	} else {
@@ -3414,8 +3384,7 @@ try_onemore:
 
 		if (!f2fs_readonly(sb) && err > 0) {
 			err = -EINVAL;
-			f2fs_msg(sb, KERN_ERR,
-				"Need to recover fsync data");
+			f2fs_err(sbi, "Need to recover fsync data");
 			goto free_meta;
 		}
 	}
@@ -3446,17 +3415,16 @@ reset_checkpoint:
 	/* recover broken superblock */
 	if (recovery) {
 		err = f2fs_commit_super(sbi, true);
-		f2fs_msg(sb, KERN_INFO,
-			"Try to recover %dth superblock, ret: %d",
-			sbi->valid_super_block ? 1 : 2, err);
+		f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
+			  sbi->valid_super_block ? 1 : 2, err);
 	}
 
 	f2fs_join_shrinker(sbi);
 
 	f2fs_tuning_parameters(sbi);
 
-	f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
-				cur_cp_version(F2FS_CKPT(sbi)));
+	f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
+		    cur_cp_version(F2FS_CKPT(sbi)));
 	f2fs_update_time(sbi, CP_TIME);
 	f2fs_update_time(sbi, REQ_TIME);
 	clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 5c85166677d4..3aeacd0aacfd 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -68,6 +68,20 @@ static ssize_t dirty_segments_show(struct f2fs_attr *a,
 		(unsigned long long)(dirty_segments(sbi)));
 }
 
+static ssize_t unusable_show(struct f2fs_attr *a,
+		struct f2fs_sb_info *sbi, char *buf)
+{
+	block_t unusable;
+
+	if (test_opt(sbi, DISABLE_CHECKPOINT))
+		unusable = sbi->unusable_block_count;
+	else
+		unusable = f2fs_get_unusable_blocks(sbi);
+	return snprintf(buf, PAGE_SIZE, "%llu\n",
+		(unsigned long long)unusable);
+}
+
+
 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
 		struct f2fs_sb_info *sbi, char *buf)
 {
@@ -440,6 +454,7 @@ F2FS_GENERAL_RO_ATTR(dirty_segments);
 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
 F2FS_GENERAL_RO_ATTR(features);
 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
+F2FS_GENERAL_RO_ATTR(unusable);
 
 #ifdef CONFIG_FS_ENCRYPTION
 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
@@ -495,6 +510,7 @@ static struct attribute *f2fs_attrs[] = {
 	ATTR_LIST(inject_type),
 #endif
 	ATTR_LIST(dirty_segments),
+	ATTR_LIST(unusable),
 	ATTR_LIST(lifetime_write_kbytes),
 	ATTR_LIST(features),
 	ATTR_LIST(reserved_blocks),
@@ -568,8 +584,7 @@ static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
 
 		if ((i % 10) == 0)
 			seq_printf(seq, "%-10d", i);
-		seq_printf(seq, "%d|%-3u", se->type,
-					get_valid_blocks(sbi, i, false));
+		seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
 		if ((i % 10) == 9 || i == (total_segs - 1))
 			seq_putc(seq, '\n');
 		else
@@ -595,8 +610,7 @@ static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
 		struct seg_entry *se = get_seg_entry(sbi, i);
 
 		seq_printf(seq, "%-10d", i);
-		seq_printf(seq, "%d|%-3u|", se->type,
-					get_valid_blocks(sbi, i, false));
+		seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
 		for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
 			seq_printf(seq, " %.2x", se->cur_valid_map[j]);
 		seq_putc(seq, '\n');
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index e791741d193b..b32c45621679 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -346,7 +346,10 @@ static int lookup_all_xattrs(struct inode *inode, struct page *ipage,
 
 	*xe = __find_xattr(cur_addr, last_txattr_addr, index, len, name);
 	if (!*xe) {
-		err = -EFAULT;
+		f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
+								inode->i_ino);
+		set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
+		err = -EFSCORRUPTED;
 		goto out;
 	}
 check:
@@ -622,7 +625,10 @@ static int __f2fs_setxattr(struct inode *inode, int index,
 	/* find entry with wanted name. */
 	here = __find_xattr(base_addr, last_base_addr, index, len, name);
 	if (!here) {
-		error = -EFAULT;
+		f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
+								inode->i_ino);
+		set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
+		error = -EFSCORRUPTED;
 		goto exit;
 	}
 
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index e3dc031af7f5..1796ff99c3e9 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -1019,8 +1019,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
 	),
 
 	TP_fast_assign(
-		__entry->dev		= page->mapping->host->i_sb->s_dev;
-		__entry->ino		= page->mapping->host->i_ino;
+		__entry->dev		= page_file_mapping(page)->host->i_sb->s_dev;
+		__entry->ino		= page_file_mapping(page)->host->i_ino;
 		__entry->index		= page->index;
 		__entry->old_blkaddr	= fio->old_blkaddr;
 		__entry->new_blkaddr	= fio->new_blkaddr;
@@ -1207,10 +1207,11 @@ DECLARE_EVENT_CLASS(f2fs__page,
 	),
 
 	TP_fast_assign(
-		__entry->dev	= page->mapping->host->i_sb->s_dev;
-		__entry->ino	= page->mapping->host->i_ino;
+		__entry->dev	= page_file_mapping(page)->host->i_sb->s_dev;
+		__entry->ino	= page_file_mapping(page)->host->i_ino;
 		__entry->type	= type;
-		__entry->dir	= S_ISDIR(page->mapping->host->i_mode);
+		__entry->dir	=
+			S_ISDIR(page_file_mapping(page)->host->i_mode);
 		__entry->index	= page->index;
 		__entry->dirty	= PageDirty(page);
 		__entry->uptodate = PageUptodate(page);