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f2fs: fix to handle quota_{on,off} correctly 

With quota_ino feature on, generic/232 reports an inconsistence issue
on the image.

The root cause is that the testcase tries to:
- use quotactl to shutdown journalled quota based on sysfile;
- and then use quotactl to enable/turn on quota based on specific file
(aquota.user or aquota.group).

Eventually, quota sysfile will be out-of-update due to following specific
file creation.

Change as below to fix this issue:
- deny enabling quota based on specific file if quota sysfile exists.
- set SBI_QUOTA_NEED_REPAIR once sysfile based quota shutdowns via
ioctl.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2019-07-25 17:33:37 +08:00 committed by Jaegeuk Kim
parent a25c2cdcb6
commit fe973b065b
1 changed files with 25 additions and 2 deletions
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27
fs/f2fs/super.c
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@ -2000,6 +2000,12 @@ static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
struct inode *inode;
int err;
/* if quota sysfile exists, deny enabling quota with specific file */
if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
return -EBUSY;
}
err = f2fs_quota_sync(sb, type);
if (err)
return err;
@ -2019,7 +2025,7 @@ static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
return 0;
}
static int f2fs_quota_off(struct super_block *sb, int type)
static int __f2fs_quota_off(struct super_block *sb, int type)
{
struct inode *inode = sb_dqopt(sb)->files[type];
int err;
@ -2045,13 +2051,30 @@ out_put:
return err;
}
static int f2fs_quota_off(struct super_block *sb, int type)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int err;
err = __f2fs_quota_off(sb, type);
/*
* quotactl can shutdown journalled quota, result in inconsistence
* between quota record and fs data by following updates, tag the
* flag to let fsck be aware of it.
*/
if (is_journalled_quota(sbi))
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
return err;
}
void f2fs_quota_off_umount(struct super_block *sb)
{
int type;
int err;
for (type = 0; type < MAXQUOTAS; type++) {
err = f2fs_quota_off(sb, type);
err = __f2fs_quota_off(sb, type);
if (err) {
int ret = dquot_quota_off(sb, type);