Merge tag 'for-5.2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "This time the majority of changes are cleanups, though there's still a
  number of changes of user interest.

  User visible changes:

   - better read time and write checks to catch errors early and before
     writing data to disk (to catch potential memory corruption on data
     that get checksummed)

   - qgroups + metadata relocation: last speed up patch int the series
     to address the slowness, there should be no overhead comparing
     balance with and without qgroups

   - FIEMAP ioctl does not start a transaction unnecessarily, this can
     result in a speed up and less blocking due to IO

   - LOGICAL_INO (v1, v2) does not start transaction unnecessarily, this
     can speed up the mentioned ioctl and scrub as well

   - fsync on files with many (but not too many) hardlinks is faster,
     finer decision if the links should be fsynced individually or
     completely

   - send tries harder to find ranges to clone

   - trim/discard will skip unallocated chunks that haven't been touched
     since the last mount

  Fixes:

   - send flushes delayed allocation before start, otherwise it could
     miss some changes in case of a very recent rw->ro switch of a
     subvolume

   - fix fallocate with qgroups that could lead to space accounting
     underflow, reported as a warning

   - trim/discard ioctl honours the requested range

   - starting send and dedupe on a subvolume at the same time will let
     only one of them succeed, this is to prevent changes that send
     could miss due to dedupe; both operations are restartable

  Core changes:

   - more tree-checker validations, errors reported by fuzzing tools:
      - device item
      - inode item
      - block group profiles

   - tracepoints for extent buffer locking

   - async cow preallocates memory to avoid errors happening too deep in
     the call chain

   - metadata reservations for delalloc reworked to better adapt in
     many-writers/low-space scenarios

   - improved space flushing logic for intense DIO vs buffered workloads

   - lots of cleanups
      - removed unused struct members
      - redundant argument removal
      - properties and xattrs
      - extent buffer locking
      - selftests
      - use common file type conversions
      - many-argument functions reduction"

* tag 'for-5.2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (227 commits)
  btrfs: Use kvmalloc for allocating compressed path context
  btrfs: Factor out common extent locking code in submit_compressed_extents
  btrfs: Set io_tree only once in submit_compressed_extents
  btrfs: Replace clear_extent_bit with unlock_extent
  btrfs: Make compress_file_range take only struct async_chunk
  btrfs: Remove fs_info from struct async_chunk
  btrfs: Rename async_cow to async_chunk
  btrfs: Preallocate chunks in cow_file_range_async
  btrfs: reserve delalloc metadata differently
  btrfs: track DIO bytes in flight
  btrfs: merge calls of btrfs_setxattr and btrfs_setxattr_trans in btrfs_set_prop
  btrfs: delete unused function btrfs_set_prop_trans
  btrfs: start transaction in xattr_handler_set_prop
  btrfs: drop local copy of inode i_mode
  btrfs: drop old_fsflags in btrfs_ioctl_setflags
  btrfs: modify local copy of btrfs_inode flags
  btrfs: drop useless inode i_flags copy and restore
  btrfs: start transaction in btrfs_ioctl_setflags()
  btrfs: export btrfs_set_prop
  btrfs: refactor btrfs_set_props to validate externally
  ...

1 files changed, 38 insertions, 40 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 5260a9263d73..0a61dff27f57 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -41,6 +41,7 @@ extern struct kmem_cache *btrfs_bit_radix_cachep;
 extern struct kmem_cache *btrfs_path_cachep;
 extern struct kmem_cache *btrfs_free_space_cachep;
 struct btrfs_ordered_sum;
+struct btrfs_ref;
 
 #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */
 
@@ -1015,6 +1016,7 @@ struct btrfs_fs_info {
 	/* used to keep from writing metadata until there is a nice batch */
 	struct percpu_counter dirty_metadata_bytes;
 	struct percpu_counter delalloc_bytes;
+	struct percpu_counter dio_bytes;
 	s32 dirty_metadata_batch;
 	s32 delalloc_batch;
 
@@ -1092,10 +1094,7 @@ struct btrfs_fs_info {
 
 	/* holds configuration and tracking. Protected by qgroup_lock */
 	struct rb_root qgroup_tree;
-	struct rb_root qgroup_op_tree;
 	spinlock_t qgroup_lock;
-	spinlock_t qgroup_op_lock;
-	atomic_t qgroup_op_seq;
 
 	/*
 	 * used to avoid frequently calling ulist_alloc()/ulist_free()
@@ -1152,12 +1151,6 @@ struct btrfs_fs_info {
 	struct mutex unused_bg_unpin_mutex;
 	struct mutex delete_unused_bgs_mutex;
 
-	/*
-	 * Chunks that can't be freed yet (under a trim/discard operation)
-	 * and will be latter freed. Protected by fs_info->chunk_mutex.
-	 */
-	struct list_head pinned_chunks;
-
 	/* Cached block sizes */
 	u32 nodesize;
 	u32 sectorsize;
@@ -1348,6 +1341,12 @@ struct btrfs_root {
 	 * manipulation with the read-only status via SUBVOL_SETFLAGS
 	 */
 	int send_in_progress;
+	/*
+	 * Number of currently running deduplication operations that have a
+	 * destination inode belonging to this root. Protected by the lock
+	 * root_item_lock.
+	 */
+	int dedupe_in_progress;
 	struct btrfs_subvolume_writers *subv_writers;
 	atomic_t will_be_snapshotted;
 	atomic_t snapshot_force_cow;
@@ -1540,6 +1539,21 @@ do {                                                                   \
 
 #define BTRFS_INODE_ROOT_ITEM_INIT	(1 << 31)
 
+#define BTRFS_INODE_FLAG_MASK						\
+	(BTRFS_INODE_NODATASUM |					\
+	 BTRFS_INODE_NODATACOW |					\
+	 BTRFS_INODE_READONLY |						\
+	 BTRFS_INODE_NOCOMPRESS |					\
+	 BTRFS_INODE_PREALLOC |						\
+	 BTRFS_INODE_SYNC |						\
+	 BTRFS_INODE_IMMUTABLE |					\
+	 BTRFS_INODE_APPEND |						\
+	 BTRFS_INODE_NODUMP |						\
+	 BTRFS_INODE_NOATIME |						\
+	 BTRFS_INODE_DIRSYNC |						\
+	 BTRFS_INODE_COMPRESS |						\
+	 BTRFS_INODE_ROOT_ITEM_INIT)
+
 struct btrfs_map_token {
 	const struct extent_buffer *eb;
 	char *kaddr;
@@ -2163,18 +2177,16 @@ static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
 	return (btrfs_header_flags(eb) & flag) == flag;
 }
 
-static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
+static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
 {
 	u64 flags = btrfs_header_flags(eb);
 	btrfs_set_header_flags(eb, flags | flag);
-	return (flags & flag) == flag;
 }
 
-static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
+static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
 {
 	u64 flags = btrfs_header_flags(eb);
 	btrfs_set_header_flags(eb, flags & ~flag);
-	return (flags & flag) == flag;
 }
 
 static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
@@ -2445,13 +2457,12 @@ static inline int btrfs_super_csum_size(const struct btrfs_super_block *s)
  * this returns the address of the start of the last item,
  * which is the stop of the leaf data stack
  */
-static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info,
-					 const struct extent_buffer *leaf)
+static inline unsigned int leaf_data_end(const struct extent_buffer *leaf)
 {
 	u32 nr = btrfs_header_nritems(leaf);
 
 	if (nr == 0)
-		return BTRFS_LEAF_DATA_SIZE(fs_info);
+		return BTRFS_LEAF_DATA_SIZE(leaf->fs_info);
 	return btrfs_item_offset_nr(leaf, nr - 1);
 }
 
@@ -2698,8 +2709,6 @@ void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg);
 void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
 int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
 			   unsigned long count);
-int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info,
-				 unsigned long count, u64 transid, int wait);
 void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,
 				  struct btrfs_delayed_ref_root *delayed_refs,
 				  struct btrfs_delayed_ref_head *head);
@@ -2711,8 +2720,7 @@ int btrfs_pin_extent(struct btrfs_fs_info *fs_info,
 		     u64 bytenr, u64 num, int reserved);
 int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info,
 				    u64 bytenr, u64 num_bytes);
-int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info,
-				 struct extent_buffer *eb);
+int btrfs_exclude_logged_extents(struct extent_buffer *eb);
 int btrfs_cross_ref_exist(struct btrfs_root *root,
 			  u64 objectid, u64 offset, u64 bytenr);
 struct btrfs_block_group_cache *btrfs_lookup_block_group(
@@ -2745,13 +2753,9 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 		  struct extent_buffer *buf, int full_backref);
 int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
-				struct btrfs_fs_info *fs_info,
 				u64 bytenr, u64 num_bytes, u64 flags,
 				int level, int is_data);
-int btrfs_free_extent(struct btrfs_trans_handle *trans,
-		      struct btrfs_root *root,
-		      u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid,
-		      u64 owner, u64 offset);
+int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref);
 
 int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
 			       u64 start, u64 len, int delalloc);
@@ -2760,15 +2764,11 @@ int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info,
 void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info);
 int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans);
 int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
-			 struct btrfs_root *root,
-			 u64 bytenr, u64 num_bytes, u64 parent,
-			 u64 root_objectid, u64 owner, u64 offset);
+			 struct btrfs_ref *generic_ref);
 
 int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans);
-int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
-				   struct btrfs_fs_info *fs_info);
-int btrfs_setup_space_cache(struct btrfs_trans_handle *trans,
-			    struct btrfs_fs_info *fs_info);
+int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans);
+int btrfs_setup_space_cache(struct btrfs_trans_handle *trans);
 int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr);
 int btrfs_free_block_groups(struct btrfs_fs_info *info);
 int btrfs_read_block_groups(struct btrfs_fs_info *info);
@@ -2936,10 +2936,8 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
 		      struct extent_buffer **cow_ret, u64 new_root_objectid);
 int btrfs_block_can_be_shared(struct btrfs_root *root,
 			      struct extent_buffer *buf);
-void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path,
-		       u32 data_size);
-void btrfs_truncate_item(struct btrfs_fs_info *fs_info,
-			 struct btrfs_path *path, u32 new_size, int from_end);
+void btrfs_extend_item(struct btrfs_path *path, u32 data_size);
+void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end);
 int btrfs_split_item(struct btrfs_trans_handle *trans,
 		     struct btrfs_root *root,
 		     struct btrfs_path *path,
@@ -3015,8 +3013,7 @@ static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p)
 {
 	return btrfs_next_old_item(root, p, 0);
 }
-int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info,
-			  struct extent_buffer *leaf);
+int btrfs_leaf_free_space(struct extent_buffer *leaf);
 int __must_check btrfs_drop_snapshot(struct btrfs_root *root,
 				     struct btrfs_block_rsv *block_rsv,
 				     int update_ref, int for_reloc);
@@ -3756,8 +3753,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
 void btrfs_scrub_pause(struct btrfs_fs_info *fs_info);
 void btrfs_scrub_continue(struct btrfs_fs_info *fs_info);
 int btrfs_scrub_cancel(struct btrfs_fs_info *info);
-int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info,
-			   struct btrfs_device *dev);
+int btrfs_scrub_cancel_dev(struct btrfs_device *dev);
 int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid,
 			 struct btrfs_scrub_progress *progress);
 static inline void btrfs_init_full_stripe_locks_tree(
@@ -3806,6 +3802,8 @@ static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
 	return signal_pending(current);
 }
 
+#define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len))
+
 /* Sanity test specific functions */
 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
 void btrfs_test_inode_set_ops(struct inode *inode);