[PATCH 1/2] f2fs: fix to avoid quota inode leak in ->put_super
From: Chao Yu
Date: Fri Aug 17 2018 - 05:19:05 EST
generic/019 reports below error:
__quota_error: 1160 callbacks suppressed
Quota error (device zram1): write_blk: dquota write failed
Quota error (device zram1): qtree_write_dquot: Error -28 occurred while creating quota
Quota error (device zram1): write_blk: dquota write failed
Quota error (device zram1): qtree_write_dquot: Error -28 occurred while creating quota
Quota error (device zram1): write_blk: dquota write failed
Quota error (device zram1): qtree_write_dquot: Error -28 occurred while creating quota
Quota error (device zram1): write_blk: dquota write failed
Quota error (device zram1): qtree_write_dquot: Error -28 occurred while creating quota
Quota error (device zram1): write_blk: dquota write failed
Quota error (device zram1): qtree_write_dquot: Error -28 occurred while creating quota
VFS: Busy inodes after unmount of zram1. Self-destruct in 5 seconds. Have a nice day...
If we failed in below path due to fail to write dquot block, we will miss
to release quota inode, fix it.
- f2fs_put_super
- f2fs_quota_off_umount
- f2fs_quota_off
- f2fs_quota_sync <-- failed
- dquot_quota_off <-- missed to call
Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
fs/f2fs/super.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a5df9fbc6355..9647bbcdfd2b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1977,10 +1977,12 @@ void f2fs_quota_off_umount(struct super_block *sb)
for (type = 0; type < MAXQUOTAS; type++) {
err = f2fs_quota_off(sb, type);
if (err) {
+ int ret = dquot_quota_off(sb, type);
+
f2fs_msg(sb, KERN_ERR,
"Fail to turn off disk quota "
- "(type: %d, err: %d), Please "
- "run fsck to fix it.", type, err);
+ "(type: %d, err: %d, ret:%d), Please "
+ "run fsck to fix it.", type, err, ret);
set_sbi_flag(F2FS_SB(sb), SBI_NEED_FSCK);
}
}
--
2.18.0.rc1