Commit bcb13850 authored by Jan Kara's avatar Jan Kara Committed by Theodore Ts'o
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ext4: fix deadlock with quota feature

We didn't mark hidden quota files with S_NOQUOTA flag and thus quota was
accounted even for quota files. Thus we could recurse back to quota code
when adding new blocks to quota file which can easily deadlock. Mark
hidden quota files properly.
Signed-off-by: default avatarJan Kara <>
Signed-off-by: default avatar"Theodore Ts'o" <>
parent e8238f9a
......@@ -4953,6 +4953,8 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
return PTR_ERR(qf_inode);
/* Don't account quota for quota files to avoid recursion */
qf_inode->i_flags |= S_NOQUOTA;
err = dquot_enable(qf_inode, type, format_id, flags);
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