diff mbox series

[f2fs-dev,v2] f2fs: compress: fix inconsistent update of i_blocks in release_compress_blocks and reserve_compress_blocks

Message ID 20240929080011.3802327-1-hanqi@vivo.com (mailing list archive)
State Accepted
Commit 26413ce18e85de3dda2cd3d72c3c3e8ab8f4f996
Headers show
Series [f2fs-dev,v2] f2fs: compress: fix inconsistent update of i_blocks in release_compress_blocks and reserve_compress_blocks | expand

Commit Message

Qi Han Sept. 29, 2024, 8 a.m. UTC
After release a file and subsequently reserve it, the FSCK flag is set
when the file is deleted, as shown in the following backtrace:

F2FS-fs (dm-48): Inconsistent i_blocks, ino:401231, iblocks:1448, sectors:1472
fs_rec_info_write_type+0x58/0x274
f2fs_rec_info_write+0x1c/0x2c
set_sbi_flag+0x74/0x98
dec_valid_block_count+0x150/0x190
f2fs_truncate_data_blocks_range+0x2d4/0x3cc
f2fs_do_truncate_blocks+0x2fc/0x5f0
f2fs_truncate_blocks+0x68/0x100
f2fs_truncate+0x80/0x128
f2fs_evict_inode+0x1a4/0x794
evict+0xd4/0x280
iput+0x238/0x284
do_unlinkat+0x1ac/0x298
__arm64_sys_unlinkat+0x48/0x68
invoke_syscall+0x58/0x11c

For clusters of the following type, i_blocks are decremented by 1 and
i_compr_blocks are incremented by 7 in release_compress_blocks, while
updates to i_blocks and i_compr_blocks are skipped in reserve_compress_blocks.

raw node:
D D D D D D D D
after compress:
C D D D D D D D
after reserve:
C D D D D D D D

Let's update i_blocks and i_compr_blocks properly in reserve_compress_blocks.

Fixes: eb8fbaa53374 ("f2fs: compress: fix to check unreleased compressed cluster")
Signed-off-by: Qi Han <hanqi@vivo.com>
---
 fs/f2fs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Chao Yu Oct. 8, 2024, 2:57 a.m. UTC | #1
On 2024/9/29 16:00, Qi Han wrote:
> After release a file and subsequently reserve it, the FSCK flag is set
> when the file is deleted, as shown in the following backtrace:
> 
> F2FS-fs (dm-48): Inconsistent i_blocks, ino:401231, iblocks:1448, sectors:1472
> fs_rec_info_write_type+0x58/0x274
> f2fs_rec_info_write+0x1c/0x2c
> set_sbi_flag+0x74/0x98
> dec_valid_block_count+0x150/0x190
> f2fs_truncate_data_blocks_range+0x2d4/0x3cc
> f2fs_do_truncate_blocks+0x2fc/0x5f0
> f2fs_truncate_blocks+0x68/0x100
> f2fs_truncate+0x80/0x128
> f2fs_evict_inode+0x1a4/0x794
> evict+0xd4/0x280
> iput+0x238/0x284
> do_unlinkat+0x1ac/0x298
> __arm64_sys_unlinkat+0x48/0x68
> invoke_syscall+0x58/0x11c
> 
> For clusters of the following type, i_blocks are decremented by 1 and
> i_compr_blocks are incremented by 7 in release_compress_blocks, while
> updates to i_blocks and i_compr_blocks are skipped in reserve_compress_blocks.
> 
> raw node:
> D D D D D D D D
> after compress:
> C D D D D D D D
> after reserve:
> C D D D D D D D
> 
> Let's update i_blocks and i_compr_blocks properly in reserve_compress_blocks.
> 
> Fixes: eb8fbaa53374 ("f2fs: compress: fix to check unreleased compressed cluster")
> Signed-off-by: Qi Han <hanqi@vivo.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,
patchwork-bot+f2fs--- via Linux-f2fs-devel Oct. 28, 2024, 5:40 p.m. UTC | #2
Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Sun, 29 Sep 2024 02:00:10 -0600 you wrote:
> After release a file and subsequently reserve it, the FSCK flag is set
> when the file is deleted, as shown in the following backtrace:
> 
> F2FS-fs (dm-48): Inconsistent i_blocks, ino:401231, iblocks:1448, sectors:1472
> fs_rec_info_write_type+0x58/0x274
> f2fs_rec_info_write+0x1c/0x2c
> set_sbi_flag+0x74/0x98
> dec_valid_block_count+0x150/0x190
> f2fs_truncate_data_blocks_range+0x2d4/0x3cc
> f2fs_do_truncate_blocks+0x2fc/0x5f0
> f2fs_truncate_blocks+0x68/0x100
> f2fs_truncate+0x80/0x128
> f2fs_evict_inode+0x1a4/0x794
> evict+0xd4/0x280
> iput+0x238/0x284
> do_unlinkat+0x1ac/0x298
> __arm64_sys_unlinkat+0x48/0x68
> invoke_syscall+0x58/0x11c
> 
> [...]

Here is the summary with links:
  - [f2fs-dev,v2] f2fs: compress: fix inconsistent update of i_blocks in release_compress_blocks and reserve_compress_blocks
    https://git.kernel.org/jaegeuk/f2fs/c/26413ce18e85

You are awesome, thank you!
diff mbox series

Patch

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9ae54c4c72fe..71d5ded9eeda 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3792,7 +3792,7 @@  static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count,
 		to_reserved = cluster_size - compr_blocks - reserved;
 
 		/* for the case all blocks in cluster were reserved */
-		if (to_reserved == 1) {
+		if (reserved && to_reserved == 1) {
 			dn->ofs_in_node += cluster_size;
 			goto next;
 		}