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| author | Yi Chen <chenyi77@huawei.com> | 2021-01-28 17:02:56 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-02-01 14:32:51 -0800 |
| commit | 25fb04dbce6a0e165d28fd1fa8a1d7018c637fe8 (patch) | |
| tree | 35dde129e7035059927023dcb358162b5e3bf149 /fs | |
| parent | b0ff4fe746fd028eef920ddc8c7b0361c1ede6ec (diff) | |
| download | linux-25fb04dbce6a0e165d28fd1fa8a1d7018c637fe8.tar.gz linux-25fb04dbce6a0e165d28fd1fa8a1d7018c637fe8.tar.bz2 linux-25fb04dbce6a0e165d28fd1fa8a1d7018c637fe8.zip | |
f2fs: fix to avoid inconsistent quota data
Occasionally, quota data may be corrupted detected by fsck:
Info: checkpoint state = 45 : crc compacted_summary unmount
[QUOTA WARNING] Usage inconsistent for ID 0:actual (1543036928, 762) != expected (1543032832, 762)
[ASSERT] (fsck_chk_quota_files:1986) --> Quota file is missing or invalid quota file content found.
[QUOTA WARNING] Usage inconsistent for ID 0:actual (1352478720, 344) != expected (1352474624, 344)
[ASSERT] (fsck_chk_quota_files:1986) --> Quota file is missing or invalid quota file content found.
[FSCK] Unreachable nat entries [Ok..] [0x0]
[FSCK] SIT valid block bitmap checking [Ok..]
[FSCK] Hard link checking for regular file [Ok..] [0x0]
[FSCK] valid_block_count matching with CP [Ok..] [0xdf299]
[FSCK] valid_node_count matcing with CP (de lookup) [Ok..] [0x2b01]
[FSCK] valid_node_count matcing with CP (nat lookup) [Ok..] [0x2b01]
[FSCK] valid_inode_count matched with CP [Ok..] [0x2665]
[FSCK] free segment_count matched with CP [Ok..] [0xcb04]
[FSCK] next block offset is free [Ok..]
[FSCK] fixing SIT types
[FSCK] other corrupted bugs [Fail]
The root cause is:
If we open file w/ readonly flag, disk quota info won't be initialized
for this file, however, following mmap() will force to convert inline
inode via f2fs_convert_inline_inode(), which may increase block usage
for this inode w/o updating quota data, it causes inconsistent disk quota
info.
The issue will happen in following stack:
open(file, O_RDONLY)
mmap(file)
- f2fs_convert_inline_inode
- f2fs_convert_inline_page
- f2fs_reserve_block
- f2fs_reserve_new_block
- f2fs_reserve_new_blocks
- f2fs_i_blocks_write
- dquot_claim_block
inode->i_blocks increase, but the dqb_curspace keep the size for the dquots
is NULL.
To fix this issue, let's call dquot_initialize() anyway in both
f2fs_truncate() and f2fs_convert_inline_inode() functions to avoid potential
inconsistent quota data issue.
Fixes: 0abd675e97e6 ("f2fs: support plain user/group quota")
Signed-off-by: Daiyue Zhang <zhangdaiyue1@huawei.com>
Signed-off-by: Dehe Gu <gudehe@huawei.com>
Signed-off-by: Junchao Jiang <jiangjunchao1@huawei.com>
Signed-off-by: Ge Qiu <qiuge@huawei.com>
Signed-off-by: Yi Chen <chenyi77@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/file.c | 4 | ||||
| -rw-r--r-- | fs/f2fs/inline.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 7db27c81d034..00b2ce47fa37 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -771,6 +771,10 @@ int f2fs_truncate(struct inode *inode) return -EIO; } + err = dquot_initialize(inode); + if (err) + return err; + /* we should check inline_data size */ if (!f2fs_may_inline_data(inode)) { err = f2fs_convert_inline_inode(inode); diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 806ebabf5870..993caefcd2bb 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -192,6 +192,10 @@ int f2fs_convert_inline_inode(struct inode *inode) f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb)) return 0; + err = dquot_initialize(inode); + if (err) + return err; + page = f2fs_grab_cache_page(inode->i_mapping, 0, false); if (!page) return -ENOMEM; |