diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-16 21:53:01 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-16 21:53:01 +0300 |
| commit | 087a76d390cbb8c0d21ea0cb3672ab4a7bb76362 (patch) | |
| tree | 7c86752ba8d430c37618851ee2806b5b921299bd /fs/btrfs/inode.c | |
| parent | 759b2656b259d10935647a92dbfae7fafee6a790 (diff) | |
| parent | 2939e1a86f758b55cdba73e29397dd3d94df13bc (diff) | |
| download | linux-087a76d390cbb8c0d21ea0cb3672ab4a7bb76362.tar.xz | |
Merge branch 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs updates from Chris Mason:
"Jeff Mahoney and Dave Sterba have a really nice set of cleanups in
here, and Christoph pitched in corrections/improvements to make btrfs
use proper helpers for bio walking instead of doing it by hand.
There are some key fixes as well, including some long standing bugs
that took forever to track down in btrfs_drop_extents and during
balance"
* 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (77 commits)
btrfs: limit async_work allocation and worker func duration
Revert "Btrfs: adjust len of writes if following a preallocated extent"
Btrfs: don't WARN() in btrfs_transaction_abort() for IO errors
btrfs: opencode chunk locking, remove helpers
btrfs: remove root parameter from transaction commit/end routines
btrfs: split btrfs_wait_marked_extents into normal and tree log functions
btrfs: take an fs_info directly when the root is not used otherwise
btrfs: simplify btrfs_wait_cache_io prototype
btrfs: convert extent-tree tracepoints to use fs_info
btrfs: root->fs_info cleanup, access fs_info->delayed_root directly
btrfs: root->fs_info cleanup, add fs_info convenience variables
btrfs: root->fs_info cleanup, update_block_group{,flags}
btrfs: root->fs_info cleanup, lock/unlock_chunks
btrfs: root->fs_info cleanup, btrfs_calc_{trans,trunc}_metadata_size
btrfs: pull node/sector/stripe sizes out of root and into fs_info
btrfs: root->fs_info cleanup, io_ctl_init
btrfs: root->fs_info cleanup, use fs_info->dev_root everywhere
btrfs: struct reada_control.root -> reada_control.fs_info
btrfs: struct btrfsic_state->root should be an fs_info
btrfs: alloc_reserved_file_extent trace point should use extent_root
...
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 910 |
1 files changed, 449 insertions, 461 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index a4c879671b9d..c3b6ffa8e39d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -30,7 +30,6 @@ #include <linux/mpage.h> #include <linux/swap.h> #include <linux/writeback.h> -#include <linux/statfs.h> #include <linux/compat.h> #include <linux/bit_spinlock.h> #include <linux/xattr.h> @@ -250,11 +249,12 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, int compress_type, struct page **compressed_pages) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_trans_handle *trans; u64 isize = i_size_read(inode); u64 actual_end = min(end + 1, isize); u64 inline_len = actual_end - start; - u64 aligned_end = ALIGN(end, root->sectorsize); + u64 aligned_end = ALIGN(end, fs_info->sectorsize); u64 data_len = inline_len; int ret; struct btrfs_path *path; @@ -265,12 +265,12 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, data_len = compressed_size; if (start > 0 || - actual_end > root->sectorsize || - data_len > BTRFS_MAX_INLINE_DATA_SIZE(root) || + actual_end > fs_info->sectorsize || + data_len > BTRFS_MAX_INLINE_DATA_SIZE(fs_info) || (!compressed_size && - (actual_end & (root->sectorsize - 1)) == 0) || + (actual_end & (fs_info->sectorsize - 1)) == 0) || end + 1 < isize || - data_len > root->fs_info->max_inline) { + data_len > fs_info->max_inline) { return 1; } @@ -283,7 +283,7 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, btrfs_free_path(path); return PTR_ERR(trans); } - trans->block_rsv = &root->fs_info->delalloc_block_rsv; + trans->block_rsv = &fs_info->delalloc_block_rsv; if (compressed_size && compressed_pages) extent_item_size = btrfs_file_extent_calc_inline_size( @@ -326,7 +326,7 @@ out: */ btrfs_qgroup_free_data(inode, 0, PAGE_SIZE); btrfs_free_path(path); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); return ret; } @@ -373,15 +373,15 @@ static noinline int add_async_extent(struct async_cow *cow, static inline int inode_need_compress(struct inode *inode) { - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); /* force compress */ - if (btrfs_test_opt(root->fs_info, FORCE_COMPRESS)) + if (btrfs_test_opt(fs_info, FORCE_COMPRESS)) return 1; /* bad compression ratios */ if (BTRFS_I(inode)->flags & BTRFS_INODE_NOCOMPRESS) return 0; - if (btrfs_test_opt(root->fs_info, COMPRESS) || + if (btrfs_test_opt(fs_info, COMPRESS) || BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS || BTRFS_I(inode)->force_compress) return 1; @@ -411,9 +411,10 @@ static noinline void compress_file_range(struct inode *inode, struct async_cow *async_cow, int *num_added) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; u64 num_bytes; - u64 blocksize = root->sectorsize; + u64 blocksize = fs_info->sectorsize; u64 actual_end; u64 isize = i_size_read(inode); int ret = 0; @@ -426,7 +427,7 @@ static noinline void compress_file_range(struct inode *inode, unsigned long max_uncompressed = SZ_128K; int i; int will_compress; - int compress_type = root->fs_info->compress_type; + int compress_type = fs_info->compress_type; int redirty = 0; /* if this is a small write inside eof, kick off a defrag */ @@ -625,7 +626,7 @@ cont: nr_pages_ret = 0; /* flag the file so we don't compress in the future */ - if (!btrfs_test_opt(root->fs_info, FORCE_COMPRESS) && + if (!btrfs_test_opt(fs_info, FORCE_COMPRESS) && !(BTRFS_I(inode)->force_compress)) { BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS; } @@ -683,6 +684,7 @@ static void free_async_extent_pages(struct async_extent *async_extent) static noinline void submit_compressed_extents(struct inode *inode, struct async_cow *async_cow) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct async_extent *async_extent; u64 alloc_hint = 0; struct btrfs_key ins; @@ -795,7 +797,7 @@ retry: em->block_len = ins.offset; em->orig_block_len = ins.offset; em->ram_bytes = async_extent->ram_size; - em->bdev = root->fs_info->fs_devices->latest_bdev; + em->bdev = fs_info->fs_devices->latest_bdev; em->compress_type = async_extent->compress_type; set_bit(EXTENT_FLAG_PINNED, &em->flags); set_bit(EXTENT_FLAG_COMPRESSED, &em->flags); @@ -830,7 +832,7 @@ retry: async_extent->ram_size - 1, 0); goto out_free_reserve; } - btrfs_dec_block_group_reservations(root->fs_info, ins.objectid); + btrfs_dec_block_group_reservations(fs_info, ins.objectid); /* * clear dirty, set writeback and unlock the pages. @@ -871,8 +873,8 @@ retry: } return; out_free_reserve: - btrfs_dec_block_group_reservations(root->fs_info, ins.objectid); - btrfs_free_reserved_extent(root, ins.objectid, ins.offset, 1); + btrfs_dec_block_group_reservations(fs_info, ins.objectid); + btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 1); out_free: extent_clear_unlock_delalloc(inode, async_extent->start, async_extent->start + @@ -940,13 +942,14 @@ static noinline int cow_file_range(struct inode *inode, int *page_started, unsigned long *nr_written, int unlock, struct btrfs_dedupe_hash *hash) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; u64 alloc_hint = 0; u64 num_bytes; unsigned long ram_size; u64 disk_num_bytes; u64 cur_alloc_size; - u64 blocksize = root->sectorsize; + u64 blocksize = fs_info->sectorsize; struct btrfs_key ins; struct extent_map *em; struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; @@ -990,7 +993,7 @@ static noinline int cow_file_range(struct inode *inode, } BUG_ON(disk_num_bytes > - btrfs_super_total_bytes(root->fs_info->super_copy)); + btrfs_super_total_bytes(fs_info->super_copy)); alloc_hint = get_extent_allocation_hint(inode, start, num_bytes); btrfs_drop_extent_cache(inode, start, start + num_bytes - 1, 0); @@ -1000,7 +1003,7 @@ static noinline int cow_file_range(struct inode *inode, cur_alloc_size = disk_num_bytes; ret = btrfs_reserve_extent(root, cur_alloc_size, cur_alloc_size, - root->sectorsize, 0, alloc_hint, + fs_info->sectorsize, 0, alloc_hint, &ins, 1, 1); if (ret < 0) goto out_unlock; @@ -1021,7 +1024,7 @@ static noinline int cow_file_range(struct inode *inode, em->block_len = ins.offset; em->orig_block_len = ins.offset; em->ram_bytes = ram_size; - em->bdev = root->fs_info->fs_devices->latest_bdev; + em->bdev = fs_info->fs_devices->latest_bdev; set_bit(EXTENT_FLAG_PINNED, &em->flags); em->generation = -1; @@ -1053,7 +1056,7 @@ static noinline int cow_file_range(struct inode *inode, goto out_drop_extent_cache; } - btrfs_dec_block_group_reservations(root->fs_info, ins.objectid); + btrfs_dec_block_group_reservations(fs_info, ins.objectid); if (disk_num_bytes < cur_alloc_size) break; @@ -1084,8 +1087,8 @@ out: out_drop_extent_cache: btrfs_drop_extent_cache(inode, start, start + ram_size - 1, 0); out_reserve: - btrfs_dec_block_group_reservations(root->fs_info, ins.objectid); - btrfs_free_reserved_extent(root, ins.objectid, ins.offset, 1); + btrfs_dec_block_group_reservations(fs_info, ins.objectid); + btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 1); out_unlock: extent_clear_unlock_delalloc(inode, start, end, delalloc_end, locked_page, @@ -1119,6 +1122,7 @@ static noinline void async_cow_start(struct btrfs_work *work) */ static noinline void async_cow_submit(struct btrfs_work *work) { + struct btrfs_fs_info *fs_info; struct async_cow *async_cow; struct btrfs_root *root; unsigned long nr_pages; @@ -1126,16 +1130,17 @@ static noinline void async_cow_submit(struct btrfs_work *work) async_cow = container_of(work, struct async_cow, work); root = async_cow->root; + fs_info = root->fs_info; nr_pages = (async_cow->end - async_cow->start + PAGE_SIZE) >> PAGE_SHIFT; /* * atomic_sub_return implies a barrier for waitqueue_active */ - if (atomic_sub_return(nr_pages, &root->fs_info->async_delalloc_pages) < + if (atomic_sub_return(nr_pages, &fs_info->async_delalloc_pages) < 5 * SZ_1M && - waitqueue_active(&root->fs_info->async_submit_wait)) - wake_up(&root->fs_info->async_submit_wait); + waitqueue_active(&fs_info->async_submit_wait)) + wake_up(&fs_info->async_submit_wait); if (async_cow->inode) submit_compressed_extents(async_cow->inode, async_cow); @@ -1154,6 +1159,7 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, u64 start, u64 end, int *page_started, unsigned long *nr_written) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct async_cow *async_cow; struct btrfs_root *root = BTRFS_I(inode)->root; unsigned long nr_pages; @@ -1171,7 +1177,7 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, async_cow->start = start; if (BTRFS_I(inode)->flags & BTRFS_INODE_NOCOMPRESS && - !btrfs_test_opt(root->fs_info, FORCE_COMPRESS)) + !btrfs_test_opt(fs_info, FORCE_COMPRESS)) cur_end = end; else cur_end = min(end, start + SZ_512K - 1); @@ -1186,22 +1192,21 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, nr_pages = (cur_end - start + PAGE_SIZE) >> PAGE_SHIFT; - atomic_add(nr_pages, &root->fs_info->async_delalloc_pages); + atomic_add(nr_pages, &fs_info->async_delalloc_pages); - btrfs_queue_work(root->fs_info->delalloc_workers, - &async_cow->work); + btrfs_queue_work(fs_info->delalloc_workers, &async_cow->work); - if (atomic_read(&root->fs_info->async_delalloc_pages) > limit) { - wait_event(root->fs_info->async_submit_wait, - (atomic_read(&root->fs_info->async_delalloc_pages) < - limit)); + if (atomic_read(&fs_info->async_delalloc_pages) > limit) { + wait_event(fs_info->async_submit_wait, + (atomic_read(&fs_info->async_delalloc_pages) < + limit)); } - while (atomic_read(&root->fs_info->async_submit_draining) && - atomic_read(&root->fs_info->async_delalloc_pages)) { - wait_event(root->fs_info->async_submit_wait, - (atomic_read(&root->fs_info->async_delalloc_pages) == - 0)); + while (atomic_read(&fs_info->async_submit_draining) && + atomic_read(&fs_info->async_delalloc_pages)) { + wait_event(fs_info->async_submit_wait, + (atomic_read(&fs_info->async_delalloc_pages) == + 0)); } *nr_written += nr_pages; @@ -1211,14 +1216,14 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, return 0; } -static noinline int csum_exist_in_range(struct btrfs_root *root, +static noinline int csum_exist_in_range(struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes) { int ret; struct btrfs_ordered_sum *sums; LIST_HEAD(list); - ret = btrfs_lookup_csums_range(root->fs_info->csum_root, bytenr, + ret = btrfs_lookup_csums_range(fs_info->csum_root, bytenr, bytenr + num_bytes - 1, &list, 0); if (ret == 0 && list_empty(&list)) return 0; @@ -1243,6 +1248,7 @@ static noinline int run_delalloc_nocow(struct inode *inode, u64 start, u64 end, int *page_started, int force, unsigned long *nr_written) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans; struct extent_buffer *leaf; @@ -1298,7 +1304,7 @@ static noinline int run_delalloc_nocow(struct inode *inode, return PTR_ERR(trans); } - trans->block_rsv = &root->fs_info->delalloc_block_rsv; + trans->block_rsv = &fs_info->delalloc_block_rsv; cow_start = (u64)-1; cur_offset = start; @@ -1374,7 +1380,7 @@ next_slot: goto out_check; if (extent_type == BTRFS_FILE_EXTENT_REG && !force) goto out_check; - if (btrfs_extent_readonly(root, disk_bytenr)) + if (btrfs_extent_readonly(fs_info, disk_bytenr)) goto out_check; if (btrfs_cross_ref_exist(trans, root, ino, found_key.offset - @@ -1397,17 +1403,18 @@ next_slot: * this ensure that csum for a given extent are * either valid or do not exist. */ - if (csum_exist_in_range(root, disk_bytenr, num_bytes)) + if (csum_exist_in_range(fs_info, disk_bytenr, + num_bytes)) goto out_check; - if (!btrfs_inc_nocow_writers(root->fs_info, - disk_bytenr)) + if (!btrfs_inc_nocow_writers(fs_info, disk_bytenr)) goto out_check; nocow = 1; } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) { extent_end = found_key.offset + btrfs_file_extent_inline_len(leaf, path->slots[0], fi); - extent_end = ALIGN(extent_end, root->sectorsize); + extent_end = ALIGN(extent_end, + fs_info->sectorsize); } else { BUG_ON(1); } @@ -1417,8 +1424,7 @@ out_check: if (!nolock && nocow) btrfs_end_write_no_snapshoting(root); if (nocow) - btrfs_dec_nocow_writers(root->fs_info, - disk_bytenr); + btrfs_dec_nocow_writers(fs_info, disk_bytenr); goto next_slot; } if (!nocow) { @@ -1441,7 +1447,7 @@ out_check: if (!nolock && nocow) btrfs_end_write_no_snapshoting(root); if (nocow) - btrfs_dec_nocow_writers(root->fs_info, + btrfs_dec_nocow_writers(fs_info, disk_bytenr); goto error; } @@ -1461,7 +1467,7 @@ out_check: em->block_start = disk_bytenr; em->orig_block_len = disk_num_bytes; em->ram_bytes = ram_bytes; - em->bdev = root->fs_info->fs_devices->latest_bdev; + em->bdev = fs_info->fs_devices->latest_bdev; em->mod_start = em->start; em->mod_len = em->len; set_bit(EXTENT_FLAG_PINNED, &em->flags); @@ -1486,7 +1492,7 @@ out_check: ret = btrfs_add_ordered_extent(inode, cur_offset, disk_bytenr, num_bytes, num_bytes, type); if (nocow) - btrfs_dec_nocow_writers(root->fs_info, disk_bytenr); + btrfs_dec_nocow_writers(fs_info, disk_bytenr); BUG_ON(ret); /* -ENOMEM */ if (root->root_key.objectid == @@ -1528,7 +1534,7 @@ out_check: } error: - err = btrfs_end_transaction(trans, root); + err = btrfs_end_transaction(trans); if (!ret) ret = err; @@ -1693,6 +1699,8 @@ static void btrfs_merge_extent_hook(struct inode *inode, static void btrfs_add_delalloc_inodes(struct btrfs_root *root, struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); + spin_lock(&root->delalloc_lock); if (list_empty(&BTRFS_I(inode)->delalloc_inodes)) { list_add_tail(&BTRFS_I(inode)->delalloc_inodes, @@ -1701,11 +1709,11 @@ static void btrfs_add_delalloc_inodes(struct btrfs_root *root, &BTRFS_I(inode)->runtime_flags); root->nr_delalloc_inodes++; if (root->nr_delalloc_inodes == 1) { - spin_lock(&root->fs_info->delalloc_root_lock); + spin_lock(&fs_info->delalloc_root_lock); BUG_ON(!list_empty(&root->delalloc_root)); list_add_tail(&root->delalloc_root, - &root->fs_info->delalloc_roots); - spin_unlock(&root->fs_info->delalloc_root_lock); + &fs_info->delalloc_roots); + spin_unlock(&fs_info->delalloc_root_lock); } } spin_unlock(&root->delalloc_lock); @@ -1714,6 +1722,8 @@ static void btrfs_add_delalloc_inodes(struct btrfs_root *root, static void btrfs_del_delalloc_inode(struct btrfs_root *root, struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); + spin_lock(&root->delalloc_lock); if (!list_empty(&BTRFS_I(inode)->delalloc_inodes)) { list_del_init(&BTRFS_I(inode)->delalloc_inodes); @@ -1721,10 +1731,10 @@ static void btrfs_del_delalloc_inode(struct btrfs_root *root, &BTRFS_I(inode)->runtime_flags); root->nr_delalloc_inodes--; if (!root->nr_delalloc_inodes) { - spin_lock(&root->fs_info->delalloc_root_lock); + spin_lock(&fs_info->delalloc_root_lock); BUG_ON(list_empty(&root->delalloc_root)); list_del_init(&root->delalloc_root); - spin_unlock(&root->fs_info->delalloc_root_lock); + spin_unlock(&fs_info->delalloc_root_lock); } } spin_unlock(&root->delalloc_lock); @@ -1739,6 +1749,8 @@ static void btrfs_set_bit_hook(struct inode *inode, struct extent_state *state, unsigned *bits) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); + if ((*bits & EXTENT_DEFRAG) && !(*bits & EXTENT_DELALLOC)) WARN_ON(1); /* @@ -1760,11 +1772,11 @@ static void btrfs_set_bit_hook(struct inode *inode, } /* For sanity tests */ - if (btrfs_is_testing(root->fs_info)) + if (btrfs_is_testing(fs_info)) return; - __percpu_counter_add(&root->fs_info->delalloc_bytes, len, - root->fs_info->delalloc_batch); + __percpu_counter_add(&fs_info->delalloc_bytes, len, + fs_info->delalloc_batch); spin_lock(&BTRFS_I(inode)->lock); BTRFS_I(inode)->delalloc_bytes += len; if (*bits & EXTENT_DEFRAG) @@ -1783,6 +1795,7 @@ static void btrfs_clear_bit_hook(struct inode *inode, struct extent_state *state, unsigned *bits) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); u64 len = state->end + 1 - state->start; u64 num_extents = div64_u64(len + BTRFS_MAX_EXTENT_SIZE -1, BTRFS_MAX_EXTENT_SIZE); @@ -1815,11 +1828,11 @@ static void btrfs_clear_bit_hook(struct inode *inode, * error. */ if (*bits & EXTENT_DO_ACCOUNTING && - root != root->fs_info->tree_root) + root != fs_info->tree_root) btrfs_delalloc_release_metadata(inode, len); /* For sanity tests. */ - if (btrfs_is_testing(root->fs_info)) + if (btrfs_is_testing(fs_info)) return; if (root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID @@ -1829,8 +1842,8 @@ static void btrfs_clear_bit_hook(struct inode *inode, btrfs_free_reserved_data_space_noquota(inode, state->start, len); - __percpu_counter_add(&root->fs_info->delalloc_bytes, -len, - root->fs_info->delalloc_batch); + __percpu_counter_add(&fs_info->delalloc_bytes, -len, + fs_info->delalloc_batch); spin_lock(&BTRFS_I(inode)->lock); BTRFS_I(inode)->delalloc_bytes -= len; if (do_list && BTRFS_I(inode)->delalloc_bytes == 0 && @@ -1853,7 +1866,8 @@ int btrfs_merge_bio_hook(struct page *page, unsigned long offset, size_t size, struct bio *bio, unsigned long bio_flags) { - struct btrfs_root *root = BTRFS_I(page->mapping->host)->root; + struct inode *inode = page->mapping->host; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); u64 logical = (u64)bio->bi_iter.bi_sector << 9; u64 length = 0; u64 map_length; @@ -1864,8 +1878,8 @@ int btrfs_merge_bio_hook(struct page *page, unsigned long offset, length = bio->bi_iter.bi_size; map_length = length; - ret = btrfs_map_block(root->fs_info, bio_op(bio), logical, - &map_length, NULL, 0); + ret = btrfs_map_block(fs_info, btrfs_op(bio), logical, &map_length, + NULL, 0); if (ret < 0) return ret; if (map_length < length + size) @@ -1885,10 +1899,9 @@ static int __btrfs_submit_bio_start(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags, u64 bio_offset) { - struct btrfs_root *root = BTRFS_I(inode)->root; int ret = 0; - ret = btrfs_csum_one_bio(root, inode, bio, 0, 0); + ret = btrfs_csum_one_bio(inode, bio, 0, 0); BUG_ON(ret); /* -ENOMEM */ return 0; } @@ -1905,10 +1918,10 @@ static int __btrfs_submit_bio_done(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags, u64 bio_offset) { - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int ret; - ret = btrfs_map_bio(root, bio, mirror_num, 1); + ret = btrfs_map_bio(fs_info, bio, mirror_num, 1); if (ret) { bio->bi_error = ret; bio_endio(bio); @@ -1924,6 +1937,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags, u64 bio_offset) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; enum btrfs_wq_endio_type metadata = BTRFS_WQ_ENDIO_DATA; int ret = 0; @@ -1936,7 +1950,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, metadata = BTRFS_WQ_ENDIO_FREE_SPACE; if (bio_op(bio) != REQ_OP_WRITE) { - ret = btrfs_bio_wq_end_io(root->fs_info, bio, metadata); + ret = btrfs_bio_wq_end_io(fs_info, bio, metadata); if (ret) goto out; @@ -1946,7 +1960,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, bio_flags); goto out; } else if (!skip_sum) { - ret = btrfs_lookup_bio_sums(root, inode, bio, NULL); + ret = btrfs_lookup_bio_sums(inode, bio, NULL); if (ret) goto out; } @@ -1956,20 +1970,19 @@ static int btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, if (root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID) goto mapit; /* we're doing a write, do the async checksumming */ - ret = btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info, - inode, bio, mirror_num, - bio_flags, bio_offset, - __btrfs_submit_bio_start, - __btrfs_submit_bio_done); + ret = btrfs_wq_submit_bio(fs_info, inode, bio, mirror_num, + bio_flags, bio_offset, + __btrfs_submit_bio_start, + __btrfs_submit_bio_done); goto out; } else if (!skip_sum) { - ret = btrfs_csum_one_bio(root, inode, bio, 0, 0); + ret = btrfs_csum_one_bio(inode, bio, 0, 0); if (ret) goto out; } mapit: - ret = btrfs_map_bio(root, bio, mirror_num, 0); + ret = btrfs_map_bio(fs_info, bio, mirror_num, 0); out: if (ret < 0) { @@ -2090,8 +2103,8 @@ out_page: static int btrfs_writepage_start_hook(struct page *page, u64 start, u64 end) { struct inode *inode = page->mapping->host; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_writepage_fixup *fixup; - struct btrfs_root *root = BTRFS_I(inode)->root; /* this page is properly in the ordered list */ if (TestClearPagePrivate2(page)) @@ -2109,7 +2122,7 @@ static int btrfs_writepage_start_hook(struct page *page, u64 start, u64 end) btrfs_init_work(&fixup->work, btrfs_fixup_helper, btrfs_writepage_fixup_worker, NULL, NULL); fixup->page = page; - btrfs_queue_work(root->fs_info->fixup_workers, &fixup->work); + btrfs_queue_work(fs_info->fixup_workers, &fixup->work); return -EBUSY; } @@ -2180,10 +2193,9 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, ins.objectid = disk_bytenr; ins.offset = disk_num_bytes; ins.type = BTRFS_EXTENT_ITEM_KEY; - ret = btrfs_alloc_reserved_file_extent(trans, root, - root->root_key.objectid, - btrfs_ino(inode), file_pos, - ram_bytes, &ins); + ret = btrfs_alloc_reserved_file_extent(trans, root->root_key.objectid, + btrfs_ino(inode), file_pos, + ram_bytes, &ins); /* * Release the reserved range from inode dirty range map, as it is * already moved into delayed_ref_head @@ -2293,7 +2305,6 @@ static noinline int record_one_backref(u64 inum, u64 offset, u64 root_id, void *ctx) { struct btrfs_file_extent_item *extent; - struct btrfs_fs_info *fs_info; struct old_sa_defrag_extent *old = ctx; struct new_sa_defrag_extent *new = old->new; struct btrfs_path *path = new->path; @@ -2302,6 +2313,7 @@ static noinline int record_one_backref(u64 inum, u64 offset, u64 root_id, struct sa_defrag_extent_backref *backref; struct extent_buffer *leaf; struct inode *inode = new->inode; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int slot; int ret; u64 extent_offset; @@ -2315,7 +2327,6 @@ static noinline int record_one_backref(u64 inum, u64 offset, u64 root_id, key.type = BTRFS_ROOT_ITEM_KEY; key.offset = (u64)-1; - fs_info = BTRFS_I(inode)->root->fs_info; root = btrfs_read_fs_root_no_name(fs_info, &key); if (IS_ERR(root)) { if (PTR_ERR(root) == -ENOENT) @@ -2413,7 +2424,7 @@ out: static noinline bool record_extent_backrefs(struct btrfs_path *path, struct new_sa_defrag_extent *new) { - struct btrfs_fs_info *fs_info = BTRFS_I(new->inode)->root->fs_info; + struct btrfs_fs_info *fs_info = btrfs_sb(new->inode->i_sb); struct old_sa_defrag_extent *old, *tmp; int ret; @@ -2471,13 +2482,12 @@ static noinline int relink_extent_backref(struct btrfs_path *path, struct btrfs_file_extent_item *item; struct btrfs_ordered_extent *ordered; struct btrfs_trans_handle *trans; - struct btrfs_fs_info *fs_info; struct btrfs_root *root; struct btrfs_key key; struct extent_buffer *leaf; struct old_sa_defrag_extent *old = backref->old; struct new_sa_defrag_extent *new = old->new; - struct inode *src_inode = new->inode; + struct btrfs_fs_info *fs_info = btrfs_sb(new->inode->i_sb); struct inode *inode; struct extent_state *cached = NULL; int ret = 0; @@ -2498,7 +2508,6 @@ static noinline int relink_extent_backref(struct btrfs_path *path, key.type = BTRFS_ROOT_ITEM_KEY; key.offset = (u64)-1; - fs_info = BTRFS_I(src_inode)->root->fs_info; index = srcu_read_lock(&fs_info->subvol_srcu); root = btrfs_read_fs_root_no_name(fs_info, &key); @@ -2643,7 +2652,7 @@ again: inode_add_bytes(inode, len); btrfs_release_path(path); - ret = btrfs_inc_extent_ref(trans, root, new->bytenr, + ret = btrfs_inc_extent_ref(trans, fs_info, new->bytenr, new->disk_len, 0, backref->root_id, backref->inum, new->file_pos); /* start - extent_offset */ @@ -2656,7 +2665,7 @@ again: out_free_path: btrfs_release_path(path); path->leave_spinning = 0; - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); out_unlock: unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, lock_end, &cached, GFP_NOFS); @@ -2679,6 +2688,7 @@ static void free_sa_defrag_extent(struct new_sa_defrag_extent *new) static void relink_file_extents(struct new_sa_defrag_extent *new) { + struct btrfs_fs_info *fs_info = btrfs_sb(new->inode->i_sb); struct btrfs_path *path; struct sa_defrag_extent_backref *backref; struct sa_defrag_extent_backref *prev = NULL; @@ -2725,14 +2735,15 @@ static void relink_file_extents(struct new_sa_defrag_extent *new) out: free_sa_defrag_extent(new); - atomic_dec(&root->fs_info->defrag_running); - wake_up(&root->fs_info->transaction_wait); + atomic_dec(&fs_info->defrag_running); + wake_up(&fs_info->transaction_wait); } static struct new_sa_defrag_extent * record_old_file_extents(struct inode *inode, struct btrfs_ordered_extent *ordered) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_path *path; struct btrfs_key key; @@ -2831,7 +2842,7 @@ next: } btrfs_free_path(path); - atomic_inc(&root->fs_info->defrag_running); + atomic_inc(&fs_info->defrag_running); return new; @@ -2842,12 +2853,12 @@ out_kfree: return NULL; } -static void btrfs_release_delalloc_bytes(struct btrfs_root *root, +static void btrfs_release_delalloc_bytes(struct btrfs_fs_info *fs_info, u64 start, u64 len) { struct btrfs_block_group_cache *cache; - cache = btrfs_lookup_block_group(root->fs_info, start); + cache = btrfs_lookup_block_group(fs_info, start); ASSERT(cache); spin_lock(&cache->lock); @@ -2864,6 +2875,7 @@ static void btrfs_release_delalloc_bytes(struct btrfs_root *root, static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) { struct inode *inode = ordered_extent->inode; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans = NULL; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; @@ -2914,7 +2926,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) trans = NULL; goto out; } - trans->block_rsv = &root->fs_info->delalloc_block_rsv; + trans->block_rsv = &fs_info->delalloc_block_rsv; ret = btrfs_update_inode_fallback(trans, root, inode); if (ret) /* -ENOMEM or corruption */ btrfs_abort_transaction(trans, ret); @@ -2949,7 +2961,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) goto out_unlock; } - trans->block_rsv = &root->fs_info->delalloc_block_rsv; + trans->block_rsv = &fs_info->delalloc_block_rsv; if (test_bit(BTRFS_ORDERED_COMPRESSED, &ordered_extent->flags)) compress_type = ordered_extent->compress_type; @@ -2960,7 +2972,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) ordered_extent->file_offset + logical_len); } else { - BUG_ON(root == root->fs_info->tree_root); + BUG_ON(root == fs_info->tree_root); ret = insert_reserved_file_extent(trans, inode, ordered_extent->file_offset, ordered_extent->start, @@ -2969,7 +2981,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) compress_type, 0, 0, BTRFS_FILE_EXTENT_REG); if (!ret) - btrfs_release_delalloc_bytes(root, + btrfs_release_delalloc_bytes(fs_info, ordered_extent->start, ordered_extent->disk_len); } @@ -2996,10 +3008,10 @@ out_unlock: ordered_extent->file_offset + ordered_extent->len - 1, &cached_state, GFP_NOFS); out: - if (root != root->fs_info->tree_root) + if (root != fs_info->tree_root) btrfs_delalloc_release_metadata(inode, ordered_extent->len); if (trans) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (ret || truncated) { u64 start, end; @@ -3023,7 +3035,8 @@ out: if ((ret || !logical_len) && !test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags) && !test_bit(BTRFS_ORDERED_PREALLOC, &ordered_extent->flags)) - btrfs_free_reserved_extent(root, ordered_extent->start, + btrfs_free_reserved_extent(fs_info, + ordered_extent->start, ordered_extent->disk_len, 1); } @@ -3038,7 +3051,7 @@ out: if (new) { if (ret) { free_sa_defrag_extent(new); - atomic_dec(&root->fs_info->defrag_running); + atomic_dec(&fs_info->defrag_running); } else { relink_file_extents(new); } @@ -3063,7 +3076,7 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, struct extent_state *state, int uptodate) { struct inode *inode = page->mapping->host; - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_ordered_extent *ordered_extent = NULL; struct btrfs_workqueue *wq; btrfs_work_func_t func; @@ -3076,10 +3089,10 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, return 0; if (btrfs_is_free_space_inode(inode)) { - wq = root->fs_info->endio_freespace_worker; + wq = fs_info->endio_freespace_worker; func = btrfs_freespace_write_helper; } else { - wq = root->fs_info->endio_write_workers; + wq = fs_info->endio_write_workers; func = btrfs_endio_write_helper; } @@ -3103,7 +3116,7 @@ static int __readpage_endio_check(struct inode *inode, kaddr = kmap_atomic(page); csum = btrfs_csum_data(kaddr + pgoff, csum, len); - btrfs_csum_final(csum, (char *)&csum); + btrfs_csum_final(csum, (u8 *)&csum); if (csum != csum_expected) goto zeroit; @@ -3156,7 +3169,7 @@ static int btrfs_readpage_end_io_hook(struct btrfs_io_bio *io_bio, void btrfs_add_delayed_iput(struct inode *inode) { - struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_inode *binode = BTRFS_I(inode); if (atomic_add_unless(&inode->i_count, -1, 1)) @@ -3172,9 +3185,8 @@ void btrfs_add_delayed_iput(struct inode *inode) spin_unlock(&fs_info->delayed_iput_lock); } -void btrfs_run_delayed_iputs(struct btrfs_root *root) +void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info) { - struct btrfs_fs_info *fs_info = root->fs_info; spin_lock(&fs_info->delayed_iput_lock); while (!list_empty(&fs_info->delayed_iputs)) { @@ -3204,6 +3216,7 @@ void btrfs_run_delayed_iputs(struct btrfs_root *root) void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, struct btrfs_root *root) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_block_rsv *block_rsv; int ret; @@ -3228,7 +3241,7 @@ void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, if (test_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state) && btrfs_root_refs(&root->root_item) > 0) { - ret = btrfs_del_orphan_item(trans, root->fs_info->tree_root, + ret = btrfs_del_orphan_item(trans, fs_info->tree_root, root->root_key.objectid); if (ret) btrfs_abort_transaction(trans, ret); @@ -3239,7 +3252,7 @@ void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, if (block_rsv) { WARN_ON(block_rsv->size > 0); - btrfs_free_block_rsv(root, block_rsv); + btrfs_free_block_rsv(fs_info, block_rsv); } } @@ -3252,6 +3265,7 @@ void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, */ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_block_rsv *block_rsv = NULL; int reserve = 0; @@ -3259,7 +3273,8 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode) int ret; if (!root->orphan_block_rsv) { - block_rsv = btrfs_alloc_block_rsv(root, BTRFS_BLOCK_RSV_TEMP); + block_rsv = btrfs_alloc_block_rsv(fs_info, + BTRFS_BLOCK_RSV_TEMP); if (!block_rsv) return -ENOMEM; } @@ -3268,7 +3283,7 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode) if (!root->orphan_block_rsv) { root->orphan_block_rsv = block_rsv; } else if (block_rsv) { - btrfs_free_block_rsv(root, block_rsv); + btrfs_free_block_rsv(fs_info, block_rsv); block_rsv = NULL; } @@ -3331,7 +3346,7 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode) /* insert an orphan item to track subvolume contains orphan files */ if (insert >= 2) { - ret = btrfs_insert_orphan_item(trans, root->fs_info->tree_root, + ret = btrfs_insert_orphan_item(trans, fs_info->tree_root, root->root_key.objectid); if (ret && ret != -EEXIST) { btrfs_abort_transaction(trans, ret); @@ -3382,6 +3397,7 @@ static int btrfs_orphan_del(struct btrfs_trans_handle *trans, */ int btrfs_orphan_cleanup(struct btrfs_root *root) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_key key, found_key; @@ -3441,8 +3457,8 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) */ if (found_key.offset == last_objectid) { - btrfs_err(root->fs_info, - "Error removing orphan entry, stopping orphan cleanup"); + btrfs_err(fs_info, + "Error removing orphan entry, stopping orphan cleanup"); ret = -EINVAL; goto out; } @@ -3452,12 +3468,12 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) found_key.objectid = found_key.offset; found_key.type = BTRFS_INODE_ITEM_KEY; found_key.offset = 0; - inode = btrfs_iget(root->fs_info->sb, &found_key, root, NULL); + inode = btrfs_iget(fs_info->sb, &found_key, root, NULL); ret = PTR_ERR_OR_ZERO(inode); if (ret && ret != -ENOENT) goto out; - if (ret == -ENOENT && root == root->fs_info->tree_root) { + if (ret == -ENOENT && root == fs_info->tree_root) { struct btrfs_root *dead_root; struct btrfs_fs_info *fs_info = root->fs_info; int is_dead_root = 0; @@ -3499,11 +3515,11 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) ret = PTR_ERR(trans); goto out; } - btrfs_debug(root->fs_info, "auto deleting %Lu", - found_key.objectid); + btrfs_debug(fs_info, "auto deleting %Lu", + found_key.objectid); ret = btrfs_del_orphan_item(trans, root, found_key.objectid); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (ret) goto out; continue; @@ -3533,7 +3549,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) goto out; } ret = btrfs_orphan_add(trans, inode); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (ret) { iput(inode); goto out; @@ -3557,25 +3573,24 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) root->orphan_cleanup_state = ORPHAN_CLEANUP_DONE; if (root->orphan_block_rsv) - btrfs_block_rsv_release(root, root->orphan_block_rsv, + btrfs_block_rsv_release(fs_info, root->orphan_block_rsv, (u64)-1); if (root->orphan_block_rsv || test_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state)) { trans = btrfs_join_transaction(root); if (!IS_ERR(trans)) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); } if (nr_unlink) - btrfs_debug(root->fs_info, "unlinked %d orphans", nr_unlink); + btrfs_debug(fs_info, "unlinked %d orphans", nr_unlink); if (nr_truncate) - btrfs_debug(root->fs_info, "truncated %d orphans", nr_truncate); + btrfs_debug(fs_info, "truncated %d orphans", nr_truncate); out: if (ret) - btrfs_err(root->fs_info, - "could not do orphan cleanup %d", ret); + btrfs_err(fs_info, "could not do orphan cleanup %d", ret); btrfs_free_path(path); return ret; } @@ -3654,6 +3669,7 @@ static noinline int acls_after_inode_item(struct extent_buffer *leaf, */ static int btrfs_read_locked_inode(struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_inode_item *inode_item; @@ -3734,7 +3750,7 @@ cache_index: * This is required for both inode re-read from disk and delayed inode * in delayed_nodes_tree. */ - if (BTRFS_I(inode)->last_trans == root->fs_info->generation) + if (BTRFS_I(inode)->last_trans == fs_info->generation) set_bit(BTRFS_INODE_NEEDS_FULL_SYNC, &BTRFS_I(inode)->runtime_flags); @@ -3800,7 +3816,7 @@ cache_acl: path->slots[0] = first_xattr_slot; ret = btrfs_load_inode_props(inode, path); if (ret) - btrfs_err(root->fs_info, + btrfs_err(fs_info, "error loading props for ino %llu (root %llu): %d", btrfs_ino(inode), root->root_key.objectid, ret); @@ -3819,7 +3835,7 @@ cache_acl: break; case S_IFDIR: inode->i_fop = &btrfs_dir_file_operations; - if (root == root->fs_info->tree_root) + if (root == fs_info->tree_root) inode->i_op = &btrfs_dir_ro_inode_operations; else inode->i_op = &btrfs_dir_inode_operations; @@ -3937,6 +3953,7 @@ failed: noinline int btrfs_update_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct inode *inode) { + struct btrfs_fs_info *fs_info = root->fs_info; int ret; /* @@ -3948,7 +3965,7 @@ noinline int btrfs_update_inode(struct btrfs_trans_handle *trans, */ if (!btrfs_is_free_space_inode(inode) && root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID - && !test_bit(BTRFS_FS_LOG_RECOVERING, &root->fs_info->flags)) { + && !test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags)) { btrfs_update_root_times(trans, root); ret = btrfs_delayed_update_inode(trans, root, inode); @@ -3982,6 +3999,7 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans, struct inode *dir, struct inode *inode, const char *name, int name_len) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_path *path; int ret = 0; struct extent_buffer *leaf; @@ -4036,14 +4054,14 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans, ret = btrfs_del_inode_ref(trans, root, name, name_len, ino, dir_ino, &index); if (ret) { - btrfs_info(root->fs_info, + btrfs_info(fs_info, "failed to delete reference to %.*s, inode %llu parent %llu", name_len, name, ino, dir_ino); btrfs_abort_transaction(trans, ret); goto err; } skip_backref: - ret = btrfs_delete_delayed_dir_index(trans, root, dir, index); + ret = btrfs_delete_delayed_dir_index(trans, fs_info, dir, index); if (ret) { btrfs_abort_transaction(trans, ret); goto err; @@ -4138,8 +4156,8 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry) } out: - btrfs_end_transaction(trans, root); - btrfs_btree_balance_dirty(root); + btrfs_end_transaction(trans); + btrfs_btree_balance_dirty(root->fs_info); return ret; } @@ -4148,6 +4166,7 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, struct inode *dir, u64 objectid, const char *name, int name_len) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_dir_item *di; @@ -4180,9 +4199,9 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, } btrfs_release_path(path); - ret = btrfs_del_root_ref(trans, root->fs_info->tree_root, - objectid, root->root_key.objectid, - dir_ino, &index, name, name_len); + ret = btrfs_del_root_ref(trans, fs_info, objectid, + root->root_key.objectid, dir_ino, + &index, name, name_len); if (ret < 0) { if (ret != -ENOENT) { btrfs_abort_transaction(trans, ret); @@ -4206,7 +4225,7 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, } btrfs_release_path(path); - ret = btrfs_delete_delayed_dir_index(trans, root, dir, index); + ret = btrfs_delete_delayed_dir_index(trans, fs_info, dir, index); if (ret) { btrfs_abort_transaction(trans, ret); goto out; @@ -4274,8 +4293,8 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) BTRFS_I(dir)->last_unlink_trans = last_unlink_trans; } out: - btrfs_end_transaction(trans, root); - btrfs_btree_balance_dirty(root); + btrfs_end_transaction(trans); + btrfs_btree_balance_dirty(root->fs_info); return err; } @@ -4284,18 +4303,19 @@ static int truncate_space_check(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytes_deleted) { + struct btrfs_fs_info *fs_info = root->fs_info; int ret; /* * This is only used to apply pressure to the enospc system, we don't * intend to use this reservation at all. */ - bytes_deleted = btrfs_csum_bytes_to_leaves(root, bytes_deleted); - bytes_deleted *= root->nodesize; - ret = btrfs_block_rsv_add(root, &root->fs_info->trans_block_rsv, + bytes_deleted = btrfs_csum_bytes_to_leaves(fs_info, bytes_deleted); + bytes_deleted *= fs_info->nodesize; + ret = btrfs_block_rsv_add(root, &fs_info->trans_block_rsv, bytes_deleted, BTRFS_RESERVE_NO_FLUSH); if (!ret) { - trace_btrfs_space_reservation(root->fs_info, "transaction", + trace_btrfs_space_reservation(fs_info, "transaction", trans->transid, bytes_deleted, 1); trans->bytes_reserved += bytes_deleted; @@ -4338,7 +4358,7 @@ static int truncate_inline_extent(struct inode *inode, btrfs_set_file_extent_ram_bytes(leaf, fi, size); size = btrfs_file_extent_calc_inline_size(size); - btrfs_truncate_item(root, path, size, 1); + btrfs_truncate_item(root->fs_info, path, size, 1); if (test_bit(BTRFS_ROOT_REF_COWS, &root->state)) inode_sub_bytes(inode, item_end + 1 - new_size); @@ -4362,6 +4382,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, struct inode *inode, u64 new_size, u32 min_type) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_file_extent_item *fi; @@ -4407,9 +4428,10 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, * extent just the way it is. */ if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) || - root == root->fs_info->tree_root) + root == fs_info->tree_root) btrfs_drop_extent_cache(inode, ALIGN(new_size, - root->sectorsize), (u64)-1, 0); + fs_info->sectorsize), + (u64)-1, 0); /* * This function is also used to drop the items in the log tree before @@ -4431,7 +4453,7 @@ search_again: * bytes_deleted is > 0, it will be huge by the time we get here */ if (be_nice && bytes_deleted > SZ_32M) { - if (btrfs_should_end_transaction(trans, root)) { + if (btrfs_should_end_transaction(trans)) { err = -EAGAIN; goto error; } @@ -4508,7 +4530,7 @@ search_again: btrfs_file_extent_num_bytes(leaf, fi); extent_num_bytes = ALIGN(new_size - found_key.offset, - root->sectorsize); + fs_info->sectorsize); btrfs_set_file_extent_num_bytes(leaf, fi, extent_num_bytes); num_dec = (orig_num_bytes - @@ -4595,16 +4617,16 @@ delete: if (found_extent && (test_bit(BTRFS_ROOT_REF_COWS, &root->state) || - root == root->fs_info->tree_root)) { + root == fs_info->tree_root)) { btrfs_set_path_blocking(path); bytes_deleted += extent_num_bytes; - ret = btrfs_free_extent(trans, root, extent_start, + ret = btrfs_free_extent(trans, fs_info, extent_start, extent_num_bytes, 0, btrfs_header_owner(leaf), ino, extent_offset); BUG_ON(ret); - if (btrfs_should_throttle_delayed_refs(trans, root)) - btrfs_async_run_delayed_refs(root, + if (btrfs_should_throttle_delayed_refs(trans, fs_info)) + btrfs_async_run_delayed_refs(fs_info, trans->delayed_ref_updates * 2, trans->transid, 0); if (be_nice) { @@ -4613,9 +4635,8 @@ delete: should_end = 1; } if (btrfs_should_throttle_delayed_refs(trans, - root)) { + fs_info)) should_throttle = 1; - } } } @@ -4640,7 +4661,9 @@ delete: unsigned long updates = trans->delayed_ref_updates; if (updates) { trans->delayed_ref_updates = 0; - ret = btrfs_run_delayed_refs(trans, root, updates * 2); + ret = btrfs_run_delayed_refs(trans, + fs_info, + updates * 2); if (ret && !err) err = ret; } @@ -4675,7 +4698,8 @@ error: unsigned long updates = trans->delayed_ref_updates; if (updates) { trans->delayed_ref_updates = 0; - ret = btrfs_run_delayed_refs(trans, root, updates * 2); + ret = btrfs_run_delayed_refs(trans, fs_info, + updates * 2); if (ret && !err) err = ret; } @@ -4697,13 +4721,13 @@ error: int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, int front) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct address_space *mapping = inode->i_mapping; - struct btrfs_root *root = BTRFS_I(inode)->root; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; char *kaddr; - u32 blocksize = root->sectorsize; + u32 blocksize = fs_info->sectorsize; pgoff_t index = from >> PAGE_SHIFT; unsigned offset = from & (blocksize - 1); struct page *page; @@ -4807,6 +4831,7 @@ out: static int maybe_insert_hole(struct btrfs_root *root, struct inode *inode, u64 offset, u64 len) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_trans_handle *trans; int ret; @@ -4814,8 +4839,8 @@ static int maybe_insert_hole(struct btrfs_root *root, struct inode *inode, * Still need to make sure the inode looks like it's been updated so * that any holes get logged if we fsync. */ - if (btrfs_fs_incompat(root->fs_info, NO_HOLES)) { - BTRFS_I(inode)->last_trans = root->fs_info->generation; + if (btrfs_fs_incompat(fs_info, NO_HOLES)) { + BTRFS_I(inode)->last_trans = fs_info->generation; BTRFS_I(inode)->last_sub_trans = root->log_transid; BTRFS_I(inode)->last_log_commit = root->last_log_commit; return 0; @@ -4833,7 +4858,7 @@ static int maybe_insert_hole(struct btrfs_root *root, struct inode *inode, ret = btrfs_drop_extents(trans, root, inode, offset, offset + len, 1); if (ret) { btrfs_abort_transaction(trans, ret); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); return ret; } @@ -4843,7 +4868,7 @@ static int maybe_insert_hole(struct btrfs_root *root, struct inode *inode, btrfs_abort_transaction(trans, ret); else btrfs_update_inode(trans, root, inode); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); return ret; } @@ -4855,13 +4880,14 @@ static int maybe_insert_hole(struct btrfs_root *root, struct inode *inode, */ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct extent_map *em = NULL; struct extent_state *cached_state = NULL; struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; - u64 hole_start = ALIGN(oldsize, root->sectorsize); - u64 block_end = ALIGN(size, root->sectorsize); + u64 hole_start = ALIGN(oldsize, fs_info->sectorsize); + u64 block_end = ALIGN(size, fs_info->sectorsize); u64 last_byte; u64 cur_offset; u64 hole_size; @@ -4904,7 +4930,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) break; } last_byte = min(extent_map_end(em), block_end); - last_byte = ALIGN(last_byte , root->sectorsize); + last_byte = ALIGN(last_byte, fs_info->sectorsize); if (!test_bit(EXTENT_FLAG_PREALLOC, &em->flags)) { struct extent_map *hole_em; hole_size = last_byte - cur_offset; @@ -4929,9 +4955,9 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) hole_em->block_len = 0; hole_em->orig_block_len = 0; hole_em->ram_bytes = hole_size; - hole_em->bdev = root->fs_info->fs_devices->latest_bdev; + hole_em->bdev = fs_info->fs_devices->latest_bdev; hole_em->compress_type = BTRFS_COMPRESS_NONE; - hole_em->generation = root->fs_info->generation; + hole_em->generation = fs_info->generation; while (1) { write_lock(&em_tree->lock); @@ -5006,7 +5032,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr) pagecache_isize_extended(inode, oldsize, newsize); ret = btrfs_update_inode(trans, root, inode); btrfs_end_write_no_snapshoting(root); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); } else { /* @@ -5037,7 +5063,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr) * will be consistent. */ ret = btrfs_orphan_add(trans, inode); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (ret) return ret; @@ -5068,7 +5094,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr) err = btrfs_orphan_del(trans, inode); if (err) btrfs_abort_transaction(trans, err); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); } } @@ -5201,6 +5227,7 @@ static void evict_inode_truncate_pages(struct inode *inode) void btrfs_evict_inode(struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_block_rsv *rsv, *global_rsv; @@ -5215,7 +5242,7 @@ void btrfs_evict_inode(struct inode *inode) return; } - min_size = btrfs_calc_trunc_metadata_size(root, 1); + min_size = btrfs_calc_trunc_metadata_size(fs_info, 1); evict_inode_truncate_pages(inode); @@ -5235,7 +5262,7 @@ void btrfs_evict_inode(struct inode *inode) btrfs_free_io_failure_record(inode, 0, (u64)-1); - if (test_bit(BTRFS_FS_LOG_RECOVERING, &root->fs_info->flags)) { + if (test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags)) { BUG_ON(test_bit(BTRFS_INODE_HAS_ORPHAN_ITEM, &BTRFS_I(inode)->runtime_flags)); goto no_delete; @@ -5253,14 +5280,14 @@ void btrfs_evict_inode(struct inode *inode) goto no_delete; } - rsv = btrfs_alloc_block_rsv(root, BTRFS_BLOCK_RSV_TEMP); + rsv = btrfs_alloc_block_rsv(fs_info, BTRFS_BLOCK_RSV_TEMP); if (!rsv) { btrfs_orphan_del(NULL, inode); goto no_delete; } rsv->size = min_size; rsv->failfast = 1; - global_rsv = &root->fs_info->global_block_rsv; + global_rsv = &fs_info->global_block_rsv; btrfs_i_size_write(inode, 0); @@ -5294,18 +5321,18 @@ void btrfs_evict_inode(struct inode *inode) * steal_from_global == 3: abandon all hope! */ if (steal_from_global > 2) { - btrfs_warn(root->fs_info, - "Could not get space for a delete, will truncate on mount %d", - ret); + btrfs_warn(fs_info, + "Could not get space for a delete, will truncate on mount %d", + ret); btrfs_orphan_del(NULL, inode); - btrfs_free_block_rsv(root, rsv); + btrfs_free_block_rsv(fs_info, rsv); goto no_delete; } trans = btrfs_join_transaction(root); if (IS_ERR(trans)) { btrfs_orphan_del(NULL, inode); - btrfs_free_block_rsv(root, rsv); + btrfs_free_block_rsv(fs_info, rsv); goto no_delete; } @@ -5315,7 +5342,7 @@ void btrfs_evict_inode(struct inode *inode) * again. */ if (steal_from_global) { - if (!btrfs_check_space_for_delayed_refs(trans, root)) + if (!btrfs_check_space_for_delayed_refs(trans, fs_info)) ret = btrfs_block_rsv_migrate(global_rsv, rsv, min_size, 0); else @@ -5328,10 +5355,10 @@ void btrfs_evict_inode(struct inode *inode) * again. */ if (ret) { - ret = btrfs_commit_transaction(trans, root); + ret = btrfs_commit_transaction(trans); if (ret) { btrfs_orphan_del(NULL, inode); - btrfs_free_block_rsv(root, rsv); + btrfs_free_block_rsv(fs_info, rsv); goto no_delete; } continue; @@ -5345,13 +5372,13 @@ void btrfs_evict_inode(struct inode *inode) if (ret != -ENOSPC && ret != -EAGAIN) break; - trans->block_rsv = &root->fs_info->trans_block_rsv; - btrfs_end_transaction(trans, root); + trans->block_rsv = &fs_info->trans_block_rsv; + btrfs_end_transaction(trans); trans = NULL; - btrfs_btree_balance_dirty(root); + btrfs_btree_balance_dirty(fs_info); } - btrfs_free_block_rsv(root, rsv); + btrfs_free_block_rsv(fs_info, rsv); /* * Errors here aren't a big deal, it just means we leave orphan items @@ -5364,13 +5391,13 @@ void btrfs_evict_inode(struct inode *inode) btrfs_orphan_del(NULL, inode); } - trans->block_rsv = &root->fs_info->trans_block_rsv; - if (!(root == root->fs_info->tree_root || + trans->block_rsv = &fs_info->trans_block_rsv; + if (!(root == fs_info->tree_root || root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID)) btrfs_return_ino(root, btrfs_ino(inode)); - btrfs_end_transaction(trans, root); - btrfs_btree_balance_dirty(root); + btrfs_end_transaction(trans); + btrfs_btree_balance_dirty(fs_info); no_delete: btrfs_remove_delayed_node(inode); clear_inode(inode); @@ -5416,7 +5443,7 @@ out_err: * needs to be changed to reflect the root directory of the tree root. This * is kind of like crossing a mount point. */ -static int fixup_tree_root_location(struct btrfs_root *root, +static int fixup_tree_root_location(struct btrfs_fs_info *fs_info, struct inode *dir, struct dentry *dentry, struct btrfs_key *location, @@ -5441,8 +5468,7 @@ static int fixup_tree_root_location(struct btrfs_root *root, key.type = BTRFS_ROOT_REF_KEY; key.offset = location->objectid; - ret = btrfs_search_slot(NULL, root->fs_info->tree_root, &key, path, - 0, 0); + ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, path, 0, 0); if (ret) { if (ret < 0) err = ret; @@ -5463,7 +5489,7 @@ static int fixup_tree_root_location(struct btrfs_root *root, btrfs_release_path(path); - new_root = btrfs_read_fs_root_no_name(root->fs_info, location); + new_root = btrfs_read_fs_root_no_name(fs_info, location); if (IS_ERR(new_root)) { err = PTR_ERR(new_root); goto out; @@ -5517,6 +5543,7 @@ static void inode_tree_add(struct inode *inode) static void inode_tree_del(struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; int empty = 0; @@ -5529,7 +5556,7 @@ static void inode_tree_del(struct inode *inode) spin_unlock(&root->inode_lock); if (empty && btrfs_root_refs(&root->root_item) == 0) { - synchronize_srcu(&root->fs_info->subvol_srcu); + synchronize_srcu(&fs_info->subvol_srcu); spin_lock(&root->inode_lock); empty = RB_EMPTY_ROOT(&root->inode_tree); spin_unlock(&root->inode_lock); @@ -5540,13 +5567,14 @@ static void inode_tree_del(struct inode *inode) void btrfs_invalidate_inodes(struct btrfs_root *root) { + struct btrfs_fs_info *fs_info = root->fs_info; struct rb_node *node; struct rb_node *prev; struct btrfs_inode *entry; struct inode *inode; u64 objectid = 0; - if (!test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) + if (!test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) WARN_ON(btrfs_root_refs(&root->root_item) != 0); spin_lock(&root->inode_lock); @@ -5694,6 +5722,7 @@ static struct inode *new_simple_dir(struct super_block *s, struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) { + struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); struct inode *inode; struct btrfs_root *root = BTRFS_I(dir)->root; struct btrfs_root *sub_root = root; @@ -5718,8 +5747,8 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) BUG_ON(location.type != BTRFS_ROOT_ITEM_KEY); - index = srcu_read_lock(&root->fs_info->subvol_srcu); - ret = fixup_tree_root_location(root, dir, dentry, + index = srcu_read_lock(&fs_info->subvol_srcu); + ret = fixup_tree_root_location(fs_info, dir, dentry, &location, &sub_root); if (ret < 0) { if (ret != -ENOENT) @@ -5729,13 +5758,13 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) } else { inode = btrfs_iget(dir->i_sb, &location, sub_root, NULL); } - srcu_read_unlock(&root->fs_info->subvol_srcu, index); + srcu_read_unlock(&fs_info->subvol_srcu, index); if (!IS_ERR(inode) && root != sub_root) { - down_read(&root->fs_info->cleanup_work_sem); + down_read(&fs_info->cleanup_work_sem); if (!(inode->i_sb->s_flags & MS_RDONLY)) ret = btrfs_orphan_cleanup(sub_root); - up_read(&root->fs_info->cleanup_work_sem); + up_read(&fs_info->cleanup_work_sem); if (ret) { iput(inode); inode = ERR_PTR(ret); @@ -5792,6 +5821,7 @@ unsigned char btrfs_filetype_table[] = { static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) { struct inode *inode = file_inode(file); + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_item *item; struct btrfs_dir_item *di; @@ -5805,20 +5835,11 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) int slot; unsigned char d_type; int over = 0; - u32 di_cur; - u32 di_total; - u32 di_len; - int key_type = BTRFS_DIR_INDEX_KEY; char tmp_name[32]; char *name_ptr; int name_len; - int is_curr = 0; /* ctx->pos points to the current index? */ - bool emitted; bool put = false; - - /* FIXME, use a real flag for deciding about the key type */ - if (root->fs_info->tree_root == root) - key_type = BTRFS_DIR_ITEM_KEY; + struct btrfs_key location; if (!dir_emit_dots(file, ctx)) return 0; @@ -5829,14 +5850,11 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) path->reada = READA_FORWARD; - if (key_type == BTRFS_DIR_INDEX_KEY) { - INIT_LIST_HEAD(&ins_list); - INIT_LIST_HEAD(&del_list); - put = btrfs_readdir_get_delayed_items(inode, &ins_list, - &del_list); - } + INIT_LIST_HEAD(&ins_list); + INIT_LIST_HEAD(&del_list); + put = btrfs_readdir_get_delayed_items(inode, &ins_list, &del_list); - key.type = key_type; + key.type = BTRFS_DIR_INDEX_KEY; key.offset = ctx->pos; key.objectid = btrfs_ino(inode); @@ -5844,7 +5862,6 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) if (ret < 0) goto err; - emitted = false; while (1) { leaf = path->nodes[0]; slot = path->slots[0]; @@ -5862,98 +5879,52 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) if (found_key.objectid != key.objectid) break; - if (found_key.type != key_type) + if (found_key.type != BTRFS_DIR_INDEX_KEY) break; if (found_key.offset < ctx->pos) goto next; - if (key_type == BTRFS_DIR_INDEX_KEY && - btrfs_should_delete_dir_index(&del_list, - found_key.offset)) + if (btrfs_should_delete_dir_index(&del_list, found_key.offset)) goto next; ctx->pos = found_key.offset; - is_curr = 1; di = btrfs_item_ptr(leaf, slot, struct btrfs_dir_item); - di_cur = 0; - di_total = btrfs_item_size(leaf, item); - - while (di_cur < di_total) { - struct btrfs_key location; - - if (verify_dir_item(root, leaf, di)) - break; + if (verify_dir_item(fs_info, leaf, di)) + goto next; - name_len = btrfs_dir_name_len(leaf, di); - if (name_len <= sizeof(tmp_name)) { - name_ptr = tmp_name; - } else { - name_ptr = kmalloc(name_len, GFP_KERNEL); - if (!name_ptr) { - ret = -ENOMEM; - goto err; - } + name_len = btrfs_dir_name_len(leaf, di); + if (name_len <= sizeof(tmp_name)) { + name_ptr = tmp_name; + } else { + name_ptr = kmalloc(name_len, GFP_KERNEL); + if (!name_ptr) { + ret = -ENOMEM; + goto err; } - read_extent_buffer(leaf, name_ptr, - (unsigned long)(di + 1), name_len); - - d_type = btrfs_filetype_table[btrfs_dir_type(leaf, di)]; - btrfs_dir_item_key_to_cpu(leaf, di, &location); + } + read_extent_buffer(leaf, name_ptr, (unsigned long)(di + 1), + name_len); + d_type = btrfs_filetype_table[btrfs_dir_type(leaf, di)]; + btrfs_dir_item_key_to_cpu(leaf, di, &location); - /* is this a reference to our own snapshot? If so - * skip it. - * - * In contrast to old kernels, we insert the snapshot's - * dir item and dir index after it has been created, so - * we won't find a reference to our own snapshot. We - * still keep the following code for backward - * compatibility. - */ - if (location.type == BTRFS_ROOT_ITEM_KEY && - location.objectid == root->root_key.objectid) { - over = 0; - goto skip; - } - over = !dir_emit(ctx, name_ptr, name_len, - location.objectid, d_type); + over = !dir_emit(ctx, name_ptr, name_len, location.objectid, + d_type); -skip: - if (name_ptr != tmp_name) - kfree(name_ptr); + if (name_ptr != tmp_name) + kfree(name_ptr); - if (over) - goto nopos; - emitted = true; - di_len = btrfs_dir_name_len(leaf, di) + - btrfs_dir_data_len(leaf, di) + sizeof(*di); - di_cur += di_len; - di = (struct btrfs_dir_item *)((char *)di + di_len); - } + if (over) + goto nopos; + ctx->pos++; next: path->slots[0]++; } - if (key_type == BTRFS_DIR_INDEX_KEY) { - if (is_curr) - ctx->pos++; - ret = btrfs_readdir_delayed_dir_index(ctx, &ins_list, &emitted); - if (ret) - goto nopos; - } - - /* - * If we haven't emitted any dir entry, we must not touch ctx->pos as - * it was was set to the termination value in previous call. We assume - * that "." and ".." were emitted if we reach this point and set the - * termination value as well for an empty directory. - */ - if (ctx->pos > 2 && !emitted) + ret = btrfs_readdir_delayed_dir_index(ctx, &ins_list); + if (ret) goto nopos; - /* Reached end of directory/root. Bump pos past the last item. */ - ctx->pos++; - /* * Stop new entries from being returned after we return the last * entry. @@ -5971,12 +5942,10 @@ next: * last entry requires it because doing so has broken 32bit apps * in the past. */ - if (key_type == BTRFS_DIR_INDEX_KEY) { - if (ctx->pos >= INT_MAX) - ctx->pos = LLONG_MAX; - else - ctx->pos = INT_MAX; - } + if (ctx->pos >= INT_MAX) + ctx->pos = LLONG_MAX; + else + ctx->pos = INT_MAX; nopos: ret = 0; err: @@ -6006,7 +5975,7 @@ int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc) trans = btrfs_join_transaction(root); if (IS_ERR(trans)) return PTR_ERR(trans); - ret = btrfs_commit_transaction(trans, root); + ret = btrfs_commit_transaction(trans); } return ret; } @@ -6019,6 +5988,7 @@ int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc) */ static int btrfs_dirty_inode(struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans; int ret; @@ -6033,16 +6003,16 @@ static int btrfs_dirty_inode(struct inode *inode) ret = btrfs_update_inode(trans, root, inode); if (ret && ret == -ENOSPC) { /* whoops, lets try again with the full transaction */ - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); trans = btrfs_start_transaction(root, 1); if (IS_ERR(trans)) return PTR_ERR(trans); ret = btrfs_update_inode(trans, root, inode); } - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (BTRFS_I(inode)->delayed_node) - btrfs_balance_delayed_items(root); + btrfs_balance_delayed_items(fs_info); return ret; } @@ -6168,6 +6138,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, u64 ref_objectid, u64 objectid, umode_t mode, u64 *index) { + struct btrfs_fs_info *fs_info = root->fs_info; struct inode *inode; struct btrfs_inode_item *inode_item; struct btrfs_key *location; @@ -6183,7 +6154,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, if (!path) return ERR_PTR(-ENOMEM); - inode = new_inode(root->fs_info->sb); + inode = new_inode(fs_info->sb); if (!inode) { btrfs_free_path(path); return ERR_PTR(-ENOMEM); @@ -6277,7 +6248,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0], struct btrfs_inode_item); - memset_extent_buffer(path->nodes[0], 0, (unsigned long)inode_item, + memzero_extent_buffer(path->nodes[0], (unsigned long)inode_item, sizeof(*inode_item)); fill_inode_item(trans, path->nodes[0], inode_item, inode); @@ -6296,9 +6267,9 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, btrfs_inherit_iflags(inode, dir); if (S_ISREG(mode)) { - if (btrfs_test_opt(root->fs_info, NODATASUM)) + if (btrfs_test_opt(fs_info, NODATASUM)) BTRFS_I(inode)->flags |= BTRFS_INODE_NODATASUM; - if (btrfs_test_opt(root->fs_info, NODATACOW)) + if (btrfs_test_opt(fs_info, NODATACOW)) BTRFS_I(inode)->flags |= BTRFS_INODE_NODATACOW | BTRFS_INODE_NODATASUM; } @@ -6312,7 +6283,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, ret = btrfs_inode_inherit_props(trans, inode, dir); if (ret) - btrfs_err(root->fs_info, + btrfs_err(fs_info, "error inheriting props for ino %llu (root %llu): %d", btrfs_ino(inode), root->root_key.objectid, ret); @@ -6343,6 +6314,7 @@ int btrfs_add_link(struct btrfs_trans_handle *trans, struct inode *parent_inode, struct inode *inode, const char *name, int name_len, int add_backref, u64 index) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int ret = 0; struct btrfs_key key; struct btrfs_root *root = BTRFS_I(parent_inode)->root; @@ -6358,9 +6330,9 @@ int btrfs_add_link(struct btrfs_trans_handle *trans, } if (unlikely(ino == BTRFS_FIRST_FREE_OBJECTID)) { - ret = btrfs_add_root_ref(trans, root->fs_info->tree_root, - key.objectid, root->root_key.objectid, - parent_ino, index, name, name_len); + ret = btrfs_add_root_ref(trans, fs_info, key.objectid, + root->root_key.objectid, parent_ino, + index, name, name_len); } else if (add_backref) { ret = btrfs_insert_inode_ref(trans, root, name, name_len, ino, parent_ino, index); @@ -6394,9 +6366,9 @@ fail_dir_item: if (unlikely(ino == BTRFS_FIRST_FREE_OBJECTID)) { u64 local_index; int err; - err = btrfs_del_root_ref(trans, root->fs_info->tree_root, - key.objectid, root->root_key.objectid, - parent_ino, &local_index, name, name_len); + err = btrfs_del_root_ref(trans, fs_info, key.objectid, + root->root_key.objectid, parent_ino, + &local_index, name, name_len); } else if (add_backref) { u64 local_index; @@ -6423,6 +6395,7 @@ static int btrfs_add_nondir(struct btrfs_trans_handle *trans, static int btrfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) { + struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(dir)->root; struct inode *inode = NULL; @@ -6475,9 +6448,9 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry, } out_unlock: - btrfs_end_transaction(trans, root); - btrfs_balance_delayed_items(root); - btrfs_btree_balance_dirty(root); + btrfs_end_transaction(trans); + btrfs_balance_delayed_items(fs_info); + btrfs_btree_balance_dirty(fs_info); if (drop_inode) { inode_dec_link_count(inode); iput(inode); @@ -6494,6 +6467,7 @@ out_unlock_inode: static int btrfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) { + struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(dir)->root; struct inode *inode = NULL; @@ -6550,13 +6524,13 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, d_instantiate(dentry, inode); out_unlock: - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (err && drop_inode_on_err) { inode_dec_link_count(inode); iput(inode); } - btrfs_balance_delayed_items(root); - btrfs_btree_balance_dirty(root); + btrfs_balance_delayed_items(fs_info); + btrfs_btree_balance_dirty(fs_info); return err; out_unlock_inode: @@ -6571,6 +6545,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, struct btrfs_trans_handle *trans = NULL; struct btrfs_root *root = BTRFS_I(dir)->root; struct inode *inode = d_inode(old_dentry); + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); u64 index; int err; int drop_inode = 0; @@ -6628,20 +6603,21 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, btrfs_log_new_name(trans, inode, NULL, parent); } - btrfs_balance_delayed_items(root); + btrfs_balance_delayed_items(fs_info); fail: if (trans) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (drop_inode) { inode_dec_link_count(inode); iput(inode); } - btrfs_btree_balance_dirty(root); + btrfs_btree_balance_dirty(fs_info); return err; } static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { + struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); struct inode *inode = NULL; struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(dir)->root; @@ -6699,13 +6675,13 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) drop_on_err = 0; out_fail: - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (drop_on_err) { inode_dec_link_count(inode); iput(inode); } - btrfs_balance_delayed_items(root); - btrfs_btree_balance_dirty(root); + btrfs_balance_delayed_items(fs_info); + btrfs_btree_balance_dirty(fs_info); return err; out_fail_inode: @@ -6820,6 +6796,7 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, size_t pg_offset, u64 start, u64 len, int create) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int ret; int err = 0; u64 extent_start = 0; @@ -6841,7 +6818,7 @@ again: read_lock(&em_tree->lock); em = lookup_extent_mapping(em_tree, start, len); if (em) - em->bdev = root->fs_info->fs_devices->latest_bdev; + em->bdev = fs_info->fs_devices->latest_bdev; read_unlock(&em_tree->lock); if (em) { @@ -6857,7 +6834,7 @@ again: err = -ENOMEM; goto out; } - em->bdev = root->fs_info->fs_devices->latest_bdev; + em->bdev = fs_info->fs_devices->latest_bdev; em->start = EXTENT_MAP_HOLE; em->orig_start = EXTENT_MAP_HOLE; em->len = (u64)-1; @@ -6916,7 +6893,8 @@ again: } else if (found_type == BTRFS_FILE_EXTENT_INLINE) { size_t size; size = btrfs_file_extent_inline_len(leaf, path->slots[0], item); - extent_end = ALIGN(extent_start + size, root->sectorsize); + extent_end = ALIGN(extent_start + size, + fs_info->sectorsize); } next: if (start >= extent_end) { @@ -6965,7 +6943,7 @@ next: copy_size = min_t(u64, PAGE_SIZE - pg_offset, size - extent_offset); em->start = extent_start + extent_offset; - em->len = ALIGN(copy_size, root->sectorsize); + em->len = ALIGN(copy_size, fs_info->sectorsize); em->orig_block_len = em->len; em->orig_start = em->start; ptr = btrfs_file_extent_inline_start(item) + extent_offset; @@ -7024,7 +7002,7 @@ not_found_em: insert: btrfs_release_path(path); if (em->start > start || extent_map_end(em) <= start) { - btrfs_err(root->fs_info, + btrfs_err(fs_info, "bad extent! em: [%llu %llu] passed [%llu %llu]", em->start, em->len, start, len); err = -EIO; @@ -7049,11 +7027,11 @@ insert: * extent causing the -EEXIST. */ if (existing->start == em->start && - extent_map_end(existing) == extent_map_end(em) && + extent_map_end(existing) >= extent_map_end(em) && em->block_start == existing->block_start) { /* - * these two extents are the same, it happens - * with inlines especially + * The existing extent map already encompasses the + * entire extent map we tried to add. */ free_extent_map(em); em = existing; @@ -7085,7 +7063,7 @@ out: btrfs_free_path(path); if (trans) { - ret = btrfs_end_transaction(trans, root); + ret = btrfs_end_transaction(trans); if (!err) err = ret; } @@ -7264,6 +7242,7 @@ static struct extent_map *btrfs_create_dio_extent(struct inode *inode, static struct extent_map *btrfs_new_extent_direct(struct inode *inode, u64 start, u64 len) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct extent_map *em; struct btrfs_key ins; @@ -7271,17 +7250,18 @@ static struct extent_map *btrfs_new_extent_direct(struct inode *inode, int ret; alloc_hint = get_extent_allocation_hint(inode, start, len); - ret = btrfs_reserve_extent(root, len, len, root->sectorsize, 0, - alloc_hint, &ins, 1, 1); + ret = btrfs_reserve_extent(root, len, len, fs_info->sectorsize, + 0, alloc_hint, &ins, 1, 1); if (ret) return ERR_PTR(ret); em = btrfs_create_dio_extent(inode, start, ins.offset, start, ins.objectid, ins.offset, ins.offset, ins.offset, 0); - btrfs_dec_block_group_reservations(root->fs_info, ins.objectid); + btrfs_dec_block_group_reservations(fs_info, ins.objectid); if (IS_ERR(em)) - btrfs_free_reserved_extent(root, ins.objectid, ins.offset, 1); + btrfs_free_reserved_extent(fs_info, ins.objectid, + ins.offset, 1); return em; } @@ -7294,6 +7274,7 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, u64 *orig_start, u64 *orig_block_len, u64 *ram_bytes) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_trans_handle *trans; struct btrfs_path *path; int ret; @@ -7374,14 +7355,15 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, *ram_bytes = btrfs_file_extent_ram_bytes(leaf, fi); } - if (btrfs_extent_readonly(root, disk_bytenr)) + if (btrfs_extent_readonly(fs_info, disk_bytenr)) goto out; num_bytes = min(offset + *len, extent_end) - offset; if (!nocow && found_type == BTRFS_FILE_EXTENT_PREALLOC) { u64 range_end; - range_end = round_up(offset + num_bytes, root->sectorsize) - 1; + range_end = round_up(offset + num_bytes, + root->fs_info->sectorsize) - 1; ret = test_range_bit(io_tree, offset, range_end, EXTENT_DELALLOC, 0, NULL); if (ret) { @@ -7404,7 +7386,7 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, ret = btrfs_cross_ref_exist(trans, root, btrfs_ino(inode), key.offset - backref_offset, disk_bytenr); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (ret) { ret = 0; goto out; @@ -7418,8 +7400,8 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, */ disk_bytenr += backref_offset; disk_bytenr += offset - key.offset; - if (csum_exist_in_range(root, disk_bytenr, num_bytes)) - goto out; + if (csum_exist_in_range(fs_info, disk_bytenr, num_bytes)) + goto out; /* * all of the above have passed, it is safe to overwrite this extent * without cow @@ -7653,8 +7635,8 @@ static void adjust_dio_outstanding_extents(struct inode *inode, static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct extent_map *em; - struct btrfs_root *root = BTRFS_I(inode)->root; struct extent_state *cached_state = NULL; struct btrfs_dio_data *dio_data = NULL; u64 start = iblock << inode->i_blkbits; @@ -7666,7 +7648,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, if (create) unlock_bits |= EXTENT_DIRTY; else - len = min_t(u64, len, root->sectorsize); + len = min_t(u64, len, fs_info->sectorsize); lockstart = start; lockend = start + len - 1; @@ -7755,14 +7737,14 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, if (can_nocow_extent(inode, start, &len, &orig_start, &orig_block_len, &ram_bytes) == 1 && - btrfs_inc_nocow_writers(root->fs_info, block_start)) { + btrfs_inc_nocow_writers(fs_info, block_start)) { struct extent_map *em2; em2 = btrfs_create_dio_extent(inode, start, len, orig_start, block_start, len, orig_block_len, ram_bytes, type); - btrfs_dec_nocow_writers(root->fs_info, block_start); + btrfs_dec_nocow_writers(fs_info, block_start); if (type == BTRFS_ORDERED_PREALLOC) { free_extent_map(em); em = em2; @@ -7855,19 +7837,18 @@ err: static inline int submit_dio_repair_bio(struct inode *inode, struct bio *bio, int mirror_num) { - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int ret; BUG_ON(bio_op(bio) == REQ_OP_WRITE); bio_get(bio); - ret = btrfs_bio_wq_end_io(root->fs_info, bio, - BTRFS_WQ_ENDIO_DIO_REPAIR); + ret = btrfs_bio_wq_end_io(fs_info, bio, BTRFS_WQ_ENDIO_DIO_REPAIR); if (ret) goto err; - ret = btrfs_map_bio(root, bio, mirror_num, 0); + ret = btrfs_map_bio(fs_info, bio, mirror_num, 0); err: bio_put(bio); return ret; @@ -7935,7 +7916,7 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, if ((failed_bio->bi_vcnt > 1) || (failed_bio->bi_io_vec->bv_len - > BTRFS_I(inode)->root->sectorsize)) + > btrfs_inode_sectorsize(inode))) read_mode |= REQ_FAILFAST_DEV; isector = start - btrfs_io_bio(failed_bio)->logical; @@ -7980,7 +7961,7 @@ static void btrfs_retry_endio_nocsum(struct bio *bio) ASSERT(bio->bi_vcnt == 1); inode = bio->bi_io_vec->bv_page->mapping->host; - ASSERT(bio->bi_io_vec->bv_len == BTRFS_I(inode)->root->sectorsize); + ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(inode)); done->uptodate = 1; bio_for_each_segment_all(bvec, bio, i) @@ -8004,7 +7985,7 @@ static int __btrfs_correct_data_nocsum(struct inode *inode, int ret; fs_info = BTRFS_I(inode)->root->fs_info; - sectorsize = BTRFS_I(inode)->root->sectorsize; + sectorsize = fs_info->sectorsize; start = io_bio->logical; done.inode = inode; @@ -8063,7 +8044,7 @@ static void btrfs_retry_endio(struct bio *bio) ASSERT(bio->bi_vcnt == 1); inode = bio->bi_io_vec->bv_page->mapping->host; - ASSERT(bio->bi_io_vec->bv_len == BTRFS_I(inode)->root->sectorsize); + ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(inode)); bio_for_each_segment_all(bvec, bio, i) { ret = __readpage_endio_check(done->inode, io_bio, i, @@ -8098,7 +8079,7 @@ static int __btrfs_subio_endio_read(struct inode *inode, int ret; fs_info = BTRFS_I(inode)->root->fs_info; - sectorsize = BTRFS_I(inode)->root->sectorsize; + sectorsize = fs_info->sectorsize; err = 0; start = io_bio->logical; @@ -8195,7 +8176,7 @@ static void btrfs_endio_direct_write_update_ordered(struct inode *inode, const u64 bytes, const int uptodate) { - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_ordered_extent *ordered = NULL; u64 ordered_offset = offset; u64 ordered_bytes = bytes; @@ -8211,8 +8192,7 @@ again: btrfs_init_work(&ordered->work, btrfs_endio_write_helper, finish_ordered_fn, NULL, NULL); - btrfs_queue_work(root->fs_info->endio_write_workers, - &ordered->work); + btrfs_queue_work(fs_info->endio_write_workers, &ordered->work); out_test: /* * our bio might span multiple ordered extents. If we haven't @@ -8247,8 +8227,7 @@ static int __btrfs_submit_bio_start_direct_io(struct inode *inode, unsigned long bio_flags, u64 offset) { int ret; - struct btrfs_root *root = BTRFS_I(inode)->root; - ret = btrfs_csum_one_bio(root, inode, bio, offset, 1); + ret = btrfs_csum_one_bio(inode, bio, offset, 1); BUG_ON(ret); /* -ENOMEM */ return 0; } @@ -8302,8 +8281,7 @@ static struct bio *btrfs_dio_bio_alloc(struct block_device *bdev, return bio; } -static inline int btrfs_lookup_and_bind_dio_csum(struct btrfs_root *root, - struct inode *inode, +static inline int btrfs_lookup_and_bind_dio_csum(struct inode *inode, struct btrfs_dio_private *dip, struct bio *bio, u64 file_offset) @@ -8318,7 +8296,7 @@ static inline int btrfs_lookup_and_bind_dio_csum(struct btrfs_root *root, * contention. */ if (dip->logical_offset == file_offset) { - ret = btrfs_lookup_bio_sums_dio(root, inode, dip->orig_bio, + ret = btrfs_lookup_bio_sums_dio(inode, dip->orig_bio, file_offset); if (ret) return ret; @@ -8338,9 +8316,9 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, u64 file_offset, int skip_sum, int async_submit) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_dio_private *dip = bio->bi_private; bool write = bio_op(bio) == REQ_OP_WRITE; - struct btrfs_root *root = BTRFS_I(inode)->root; int ret; if (async_submit) @@ -8349,8 +8327,7 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, bio_get(bio); if (!write) { - ret = btrfs_bio_wq_end_io(root->fs_info, bio, - BTRFS_WQ_ENDIO_DATA); + ret = btrfs_bio_wq_end_io(fs_info, bio, BTRFS_WQ_ENDIO_DATA); if (ret) goto err; } @@ -8359,27 +8336,27 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, goto map; if (write && async_submit) { - ret = btrfs_wq_submit_bio(root->fs_info, - inode, bio, 0, 0, file_offset, - __btrfs_submit_bio_start_direct_io, - __btrfs_submit_bio_done); + ret = btrfs_wq_submit_bio(fs_info, inode, bio, 0, 0, + file_offset, + __btrfs_submit_bio_start_direct_io, + __btrfs_submit_bio_done); goto err; } else if (write) { /* * If we aren't doing async submit, calculate the csum of the * bio now. */ - ret = btrfs_csum_one_bio(root, inode, bio, file_offset, 1); + ret = btrfs_csum_one_bio(inode, bio, file_offset, 1); if (ret) goto err; } else { - ret = btrfs_lookup_and_bind_dio_csum(root, inode, dip, bio, + ret = btrfs_lookup_and_bind_dio_csum(inode, dip, bio, file_offset); if (ret) goto err; } map: - ret = btrfs_map_bio(root, bio, 0, async_submit); + ret = btrfs_map_bio(fs_info, bio, 0, async_submit); err: bio_put(bio); return ret; @@ -8389,23 +8366,24 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip, int skip_sum) { struct inode *inode = dip->inode; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct bio *bio; struct bio *orig_bio = dip->orig_bio; - struct bio_vec *bvec = orig_bio->bi_io_vec; + struct bio_vec *bvec; u64 start_sector = orig_bio->bi_iter.bi_sector; u64 file_offset = dip->logical_offset; u64 submit_len = 0; u64 map_length; - u32 blocksize = root->sectorsize; + u32 blocksize = fs_info->sectorsize; int async_submit = 0; int nr_sectors; int ret; - int i; + int i, j; map_length = orig_bio->bi_iter.bi_size; - ret = btrfs_map_block(root->fs_info, bio_op(orig_bio), - start_sector << 9, &map_length, NULL, 0); + ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), start_sector << 9, + &map_length, NULL, 0); if (ret) return -EIO; @@ -8431,8 +8409,8 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip, btrfs_io_bio(bio)->logical = file_offset; atomic_inc(&dip->pending_bios); - while (bvec <= (orig_bio->bi_io_vec + orig_bio->bi_vcnt - 1)) { - nr_sectors = BTRFS_BYTES_TO_BLKS(root->fs_info, bvec->bv_len); + bio_for_each_segment_all(bvec, orig_bio, j) { + nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec->bv_len); i = 0; next_block: if (unlikely(map_length < submit_len + blocksize || @@ -8469,7 +8447,7 @@ next_block: btrfs_io_bio(bio)->logical = file_offset; map_length = orig_bio->bi_iter.bi_size; - ret = btrfs_map_block(root->fs_info, bio_op(orig_bio), + ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), start_sector << 9, &map_length, NULL, 0); if (ret) { @@ -8484,7 +8462,6 @@ next_block: i++; goto next_block; } - bvec++; } } @@ -8616,12 +8593,13 @@ free_ordered: kfree(dip); } -static ssize_t check_direct_IO(struct btrfs_root *root, struct kiocb *iocb, - const struct iov_iter *iter, loff_t offset) +static ssize_t check_direct_IO(struct btrfs_fs_info *fs_info, + struct kiocb *iocb, + const struct iov_iter *iter, loff_t offset) { int seg; int i; - unsigned blocksize_mask = root->sectorsize - 1; + unsigned int blocksize_mask = fs_info->sectorsize - 1; ssize_t retval = -EINVAL; if (offset & blocksize_mask) @@ -8653,7 +8631,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_dio_data dio_data = { 0 }; loff_t offset = iocb->ki_pos; size_t count = 0; @@ -8662,7 +8640,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) bool relock = false; ssize_t ret; - if (check_direct_IO(BTRFS_I(inode)->root, iocb, iter, offset)) + if (check_direct_IO(fs_info, iocb, iter, offset)) return 0; inode_dio_begin(inode); @@ -8702,7 +8680,8 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) * do the accounting properly if we go over the number we * originally calculated. Abuse current->journal_info for this. */ - dio_data.reserve = round_up(count, root->sectorsize); + dio_data.reserve = round_up(count, + fs_info->sectorsize); dio_data.unsubmitted_oe_range_start = (u64)offset; dio_data.unsubmitted_oe_range_end = (u64)offset; current->journal_info = &dio_data; @@ -8714,7 +8693,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) } ret = __blockdev_direct_IO(iocb, inode, - BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev, + fs_info->fs_devices->latest_bdev, iter, btrfs_get_blocks_direct, NULL, btrfs_submit_direct, flags); if (iov_iter_rw(iter) == WRITE) { @@ -8973,7 +8952,7 @@ int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { struct page *page = vmf->page; struct inode *inode = file_inode(vma->vm_file); - struct btrfs_root *root = BTRFS_I(inode)->root; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; @@ -9048,7 +9027,8 @@ again: } if (page->index == ((size - 1) >> PAGE_SHIFT)) { - reserved_space = round_up(size - page_start, root->sectorsize); + reserved_space = round_up(size - page_start, + fs_info->sectorsize); if (reserved_space < PAGE_SIZE) { end = page_start + reserved_space - 1; spin_lock(&BTRFS_I(inode)->lock); @@ -9097,7 +9077,7 @@ again: set_page_dirty(page); SetPageUptodate(page); - BTRFS_I(inode)->last_trans = root->fs_info->generation; + BTRFS_I(inode)->last_trans = fs_info->generation; BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid; BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit; @@ -9118,13 +9098,14 @@ out_noreserve: static int btrfs_truncate(struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_block_rsv *rsv; int ret = 0; int err = 0; struct btrfs_trans_handle *trans; - u64 mask = root->sectorsize - 1; - u64 min_size = btrfs_calc_trunc_metadata_size(root, 1); + u64 mask = fs_info->sectorsize - 1; + u64 min_size = btrfs_calc_trunc_metadata_size(fs_info, 1); ret = btrfs_wait_ordered_range(inode, inode->i_size & (~mask), (u64)-1); @@ -9167,7 +9148,7 @@ static int btrfs_truncate(struct inode *inode) * 3) fs_info->trans_block_rsv - this will have 1 items worth left for * updating the inode. */ - rsv = btrfs_alloc_block_rsv(root, BTRFS_BLOCK_RSV_TEMP); + rsv = btrfs_alloc_block_rsv(fs_info, BTRFS_BLOCK_RSV_TEMP); if (!rsv) return -ENOMEM; rsv->size = min_size; @@ -9184,7 +9165,7 @@ static int btrfs_truncate(struct inode *inode) } /* Migrate the slack space for the truncate to our reserve */ - ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, rsv, + ret = btrfs_block_rsv_migrate(&fs_info->trans_block_rsv, rsv, min_size, 0); BUG_ON(ret); @@ -9207,15 +9188,15 @@ static int btrfs_truncate(struct inode *inode) break; } - trans->block_rsv = &root->fs_info->trans_block_rsv; + trans->block_rsv = &fs_info->trans_block_rsv; ret = btrfs_update_inode(trans, root, inode); if (ret) { err = ret; break; } - btrfs_end_transaction(trans, root); - btrfs_btree_balance_dirty(root); + btrfs_end_transaction(trans); + btrfs_btree_balance_dirty(fs_info); trans = btrfs_start_transaction(root, 2); if (IS_ERR(trans)) { @@ -9224,7 +9205,7 @@ static int btrfs_truncate(struct inode *inode) break; } - ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, + ret = btrfs_block_rsv_migrate(&fs_info->trans_block_rsv, rsv, min_size, 0); BUG_ON(ret); /* shouldn't happen */ trans->block_rsv = rsv; @@ -9238,16 +9219,16 @@ static int btrfs_truncate(struct inode *inode) } if (trans) { - trans->block_rsv = &root->fs_info->trans_block_rsv; + trans->block_rsv = &fs_info->trans_block_rsv; ret = btrfs_update_inode(trans, root, inode); if (ret && !err) err = ret; - ret = btrfs_end_transaction(trans, root); - btrfs_btree_balance_dirty(root); + ret = btrfs_end_transaction(trans); + btrfs_btree_balance_dirty(fs_info); } out: - btrfs_free_block_rsv(root, rsv); + btrfs_free_block_rsv(fs_info, rsv); if (ret && !err) err = ret; @@ -9363,6 +9344,7 @@ static void btrfs_i_callback(struct rcu_head *head) void btrfs_destroy_inode(struct inode *inode) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_ordered_extent *ordered; struct btrfs_root *root = BTRFS_I(inode)->root; @@ -9384,8 +9366,8 @@ void btrfs_destroy_inode(struct inode *inode) if (test_bit(BTRFS_INODE_HAS_ORPHAN_ITEM, &BTRFS_I(inode)->runtime_flags)) { - btrfs_info(root->fs_info, "inode %llu still on the orphan list", - btrfs_ino(inode)); + btrfs_info(fs_info, "inode %llu still on the orphan list", + btrfs_ino(inode)); atomic_dec(&root->orphan_inodes); } @@ -9394,7 +9376,7 @@ void btrfs_destroy_inode(struct inode *inode) if (!ordered) break; else { - btrfs_err(root->fs_info, + btrfs_err(fs_info, "found ordered extent %llu %llu on inode cleanup", ordered->file_offset, ordered->len); btrfs_remove_ordered_extent(inode, ordered); @@ -9506,6 +9488,7 @@ static int btrfs_rename_exchange(struct inode *old_dir, struct inode *new_dir, struct dentry *new_dentry) { + struct btrfs_fs_info *fs_info = btrfs_sb(old_dir->i_sb); struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(old_dir)->root; struct btrfs_root *dest = BTRFS_I(new_dir)->root; @@ -9528,9 +9511,9 @@ static int btrfs_rename_exchange(struct inode *old_dir, /* close the race window with snapshot create/destroy ioctl */ if (old_ino == BTRFS_FIRST_FREE_OBJECTID) - down_read(&root->fs_info->subvol_sem); + down_read(&fs_info->subvol_sem); if (new_ino == BTRFS_FIRST_FREE_OBJECTID) - down_read(&dest->fs_info->subvol_sem); + down_read(&fs_info->subvol_sem); /* * We want to reserve the absolute worst case amount of items. So if @@ -9563,7 +9546,7 @@ static int btrfs_rename_exchange(struct inode *old_dir, /* Reference for the source. */ if (old_ino == BTRFS_FIRST_FREE_OBJECTID) { /* force full log commit if subvolume involved. */ - btrfs_set_log_full_commit(root->fs_info, trans); + btrfs_set_log_full_commit(fs_info, trans); } else { btrfs_pin_log_trans(root); root_log_pinned = true; @@ -9579,7 +9562,7 @@ static int btrfs_rename_exchange(struct inode *old_dir, /* And now for the dest. */ if (new_ino == BTRFS_FIRST_FREE_OBJECTID) { /* force full log commit if subvolume involved. */ - btrfs_set_log_full_commit(dest->fs_info, trans); + btrfs_set_log_full_commit(fs_info, trans); } else { btrfs_pin_log_trans(dest); dest_log_pinned = true; @@ -9693,12 +9676,12 @@ out_fail: * allow the tasks to sync it. */ if (ret && (root_log_pinned || dest_log_pinned)) { - if (btrfs_inode_in_log(old_dir, root->fs_info->generation) || - btrfs_inode_in_log(new_dir, root->fs_info->generation) || - btrfs_inode_in_log(old_inode, root->fs_info->generation) || + if (btrfs_inode_in_log(old_dir, fs_info->generation) || + btrfs_inode_in_log(new_dir, fs_info->generation) || + btrfs_inode_in_log(old_inode, fs_info->generation) || (new_inode && - btrfs_inode_in_log(new_inode, root->fs_info->generation))) - btrfs_set_log_full_commit(root->fs_info, trans); + btrfs_inode_in_log(new_inode, fs_info->generation))) + btrfs_set_log_full_commit(fs_info, trans); if (root_log_pinned) { btrfs_end_log_trans(root); @@ -9709,12 +9692,12 @@ out_fail: dest_log_pinned = false; } } - ret = btrfs_end_transaction(trans, root); + ret = btrfs_end_transaction(trans); out_notrans: if (new_ino == BTRFS_FIRST_FREE_OBJECTID) - up_read(&dest->fs_info->subvol_sem); + up_read(&fs_info->subvol_sem); if (old_ino == BTRFS_FIRST_FREE_OBJECTID) - up_read(&root->fs_info->subvol_sem); + up_read(&fs_info->subvol_sem); return ret; } @@ -9774,6 +9757,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { + struct btrfs_fs_info *fs_info = btrfs_sb(old_dir->i_sb); struct btrfs_trans_handle *trans; unsigned int trans_num_items; struct btrfs_root *root = BTRFS_I(old_dir)->root; @@ -9830,7 +9814,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, /* close the racy window with snapshot create/destroy ioctl */ if (old_ino == BTRFS_FIRST_FREE_OBJECTID) - down_read(&root->fs_info->subvol_sem); + down_read(&fs_info->subvol_sem); /* * We want to reserve the absolute worst case amount of items. So if * both inodes are subvols and we need to unlink them then that would @@ -9861,7 +9845,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, BTRFS_I(old_inode)->dir_index = 0ULL; if (unlikely(old_ino == BTRFS_FIRST_FREE_OBJECTID)) { /* force full log commit if subvolume involved. */ - btrfs_set_log_full_commit(root->fs_info, trans); + btrfs_set_log_full_commit(fs_info, trans); } else { btrfs_pin_log_trans(root); log_pinned = true; @@ -9968,20 +9952,20 @@ out_fail: * allow the tasks to sync it. */ if (ret && log_pinned) { - if (btrfs_inode_in_log(old_dir, root->fs_info->generation) || - btrfs_inode_in_log(new_dir, root->fs_info->generation) || - btrfs_inode_in_log(old_inode, root->fs_info->generation) || + if (btrfs_inode_in_log(old_dir, fs_info->generation) || + btrfs_inode_in_log(new_dir, fs_info->generation) || + btrfs_inode_in_log(old_inode, fs_info->generation) || (new_inode && - btrfs_inode_in_log(new_inode, root->fs_info->generation))) - btrfs_set_log_full_commit(root->fs_info, trans); + btrfs_inode_in_log(new_inode, fs_info->generation))) + btrfs_set_log_full_commit(fs_info, trans); btrfs_end_log_trans(root); log_pinned = false; } - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); out_notrans: if (old_ino == BTRFS_FIRST_FREE_OBJECTID) - up_read(&root->fs_info->subvol_sem); + up_read(&fs_info->subvol_sem); return ret; } @@ -10116,9 +10100,10 @@ out: int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput) { + struct btrfs_fs_info *fs_info = root->fs_info; int ret; - if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) + if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) return -EROFS; ret = __start_delalloc_inodes(root, delay_iput, -1); @@ -10129,14 +10114,14 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput) * we have to make sure the IO is actually started and that * ordered extents get created before we return */ - atomic_inc(&root->fs_info->async_submit_draining); - while (atomic_read(&root->fs_info->nr_async_submits) || - atomic_read(&root->fs_info->async_delalloc_pages)) { - wait_event(root->fs_info->async_submit_wait, - (atomic_read(&root->fs_info->nr_async_submits) == 0 && - atomic_read(&root->fs_info->async_delalloc_pages) == 0)); - } - atomic_dec(&root->fs_info->async_submit_draining); + atomic_inc(&fs_info->async_submit_draining); + while (atomic_read(&fs_info->nr_async_submits) || + atomic_read(&fs_info->async_delalloc_pages)) { + wait_event(fs_info->async_submit_wait, + (atomic_read(&fs_info->nr_async_submits) == 0 && + atomic_read(&fs_info->async_delalloc_pages) == 0)); + } + atomic_dec(&fs_info->async_submit_draining); return ret; } @@ -10199,6 +10184,7 @@ out: static int btrfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { + struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(dir)->root; struct btrfs_path *path; @@ -10215,7 +10201,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, struct extent_buffer *leaf; name_len = strlen(symname); - if (name_len > BTRFS_MAX_INLINE_DATA_SIZE(root)) + if (name_len > BTRFS_MAX_INLINE_DATA_SIZE(fs_info)) return -ENAMETOOLONG; /* @@ -10309,12 +10295,12 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, d_instantiate(dentry, inode); out_unlock: - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (drop_inode) { inode_dec_link_count(inode); iput(inode); } - btrfs_btree_balance_dirty(root); + btrfs_btree_balance_dirty(fs_info); return err; out_unlock_inode: @@ -10328,6 +10314,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, loff_t actual_len, u64 *alloc_hint, struct btrfs_trans_handle *trans) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; struct extent_map *em; struct btrfs_root *root = BTRFS_I(inode)->root; @@ -10364,10 +10351,10 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, min_size, 0, *alloc_hint, &ins, 1, 0); if (ret) { if (own_trans) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); break; } - btrfs_dec_block_group_reservations(root->fs_info, ins.objectid); + btrfs_dec_block_group_reservations(fs_info, ins.objectid); last_alloc = ins.offset; ret = insert_reserved_file_extent(trans, inode, @@ -10376,11 +10363,11 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, ins.offset, 0, 0, 0, BTRFS_FILE_EXTENT_PREALLOC); if (ret) { - btrfs_free_reserved_extent(root, ins.objectid, + btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 0); btrfs_abort_transaction(trans, ret); if (own_trans) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); break; } @@ -10401,7 +10388,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, em->block_len = ins.offset; em->orig_block_len = ins.offset; em->ram_bytes = ins.offset; - em->bdev = root->fs_info->fs_devices->latest_bdev; + em->bdev = fs_info->fs_devices->latest_bdev; set_bit(EXTENT_FLAG_PREALLOC, &em->flags); em->generation = trans->transid; @@ -10440,12 +10427,12 @@ next: if (ret) { btrfs_abort_transaction(trans, ret); if (own_trans) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); break; } if (own_trans) - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); } if (cur_offset < end) btrfs_free_reserved_data_space(inode, cur_offset, @@ -10493,6 +10480,7 @@ static int btrfs_permission(struct inode *inode, int mask) static int btrfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) { + struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(dir)->root; struct inode *inode = NULL; @@ -10549,11 +10537,11 @@ static int btrfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) mark_inode_dirty(inode); out: - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); if (ret) iput(inode); - btrfs_balance_delayed_items(root); - btrfs_btree_balance_dirty(root); + btrfs_balance_delayed_items(fs_info); + btrfs_btree_balance_dirty(fs_info); return ret; out_inode: |