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| author | Chao Yu <chao@kernel.org> | 2024-05-06 13:41:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-12 12:39:20 +0300 |
| commit | 69136304fd144144a4828c7b7b149d0f80321ba4 (patch) | |
| tree | c9496fc94e673adb641ae83089f2448b5ad05e79 /fs/f2fs | |
| parent | 57e61036bd8fb82d4bb5392d482e1a49340a9706 (diff) | |
| download | linux-69136304fd144144a4828c7b7b149d0f80321ba4.tar.xz | |
f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
[ Upstream commit 0a4ed2d97cb6d044196cc3e726b6699222b41019 ]
It needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
to avoid racing with checkpoint, otherwise, filesystem metadata including
blkaddr in dnode, inode fields and .total_valid_block_count may be
corrupted after SPO case.
Fixes: ef8d563f184e ("f2fs: introduce F2FS_IOC_RELEASE_COMPRESS_BLOCKS")
Fixes: c75488fb4d82 ("f2fs: introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/file.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 34becfc142d8..30d438bd30ab 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3574,9 +3574,12 @@ static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg) struct dnode_of_data dn; pgoff_t end_offset, count; + f2fs_lock_op(sbi); + set_new_dnode(&dn, inode, NULL, NULL, 0); ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE); if (ret) { + f2fs_unlock_op(sbi); if (ret == -ENOENT) { page_idx = f2fs_get_next_page_offset(&dn, page_idx); @@ -3594,6 +3597,8 @@ static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg) f2fs_put_dnode(&dn); + f2fs_unlock_op(sbi); + if (ret < 0) break; @@ -3744,9 +3749,12 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) struct dnode_of_data dn; pgoff_t end_offset, count; + f2fs_lock_op(sbi); + set_new_dnode(&dn, inode, NULL, NULL, 0); ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE); if (ret) { + f2fs_unlock_op(sbi); if (ret == -ENOENT) { page_idx = f2fs_get_next_page_offset(&dn, page_idx); @@ -3764,6 +3772,8 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) f2fs_put_dnode(&dn); + f2fs_unlock_op(sbi); + if (ret < 0) break; |