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| author | Chao Yu <yuchao0@huawei.com> | 2019-09-11 11:36:50 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2019-09-12 12:09:16 +0200 |
| commit | 6565c182094f69e4ffdece337d395eb7ec760efc (patch) | |
| tree | 6f1ba9c024c3c573f368d0cbb9f9870c945cb696 | |
| parent | fs-udf: Delete an unnecessary check before brelse() (diff) | |
| download | linux-6565c182094f69e4ffdece337d395eb7ec760efc.tar.xz linux-6565c182094f69e4ffdece337d395eb7ec760efc.zip | |
quota: fix wrong condition in is_quota_modification()
Quoted from
commit 3da40c7b0898 ("ext4: only call ext4_truncate when size <= isize")
" At LSF we decided that if we truncate up from isize we shouldn't trim
fallocated blocks that were fallocated with KEEP_SIZE and are past the
new i_size. This patch fixes ext4 to do this. "
And generic/092 of fstest have covered this case for long time, however
is_quota_modification() didn't adjust based on that rule, so that in
below condition, we will lose to quota block change:
- fallocate blocks beyond EOF
- remount
- truncate(file_path, file_size)
Fix it.
Link: https://lore.kernel.org/r/20190911093650.35329-1-yuchao0@huawei.com
Fixes: 3da40c7b0898 ("ext4: only call ext4_truncate when size <= isize")
CC: stable@vger.kernel.org
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
| -rw-r--r-- | include/linux/quotaops.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index dc905a4ff8d7..185d94829701 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -22,7 +22,7 @@ static inline struct quota_info *sb_dqopt(struct super_block *sb) /* i_mutex must being held */ static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) { - return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) || + return (ia->ia_valid & ATTR_SIZE) || (ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) || (ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid)); } |