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SubjectRe: [PATCH 1/2] f2fs: fix to avoid quota inode leak in ->put_super
On 08/21, Chao Yu wrote:
> On 2018/8/21 10:38, Jaegeuk Kim wrote:
> > On 08/20, Chao Yu wrote:
> >> On 2018/8/18 23:16, Jaegeuk Kim wrote:
> >>> On 08/17, Chao Yu wrote:
> >>>> 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@huawei.com>
> >>>> ---
> >>>> 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);
> >>>> +
> >>>
> >>> Could you check the mainline version?
> >>
> >> I guess we missed to apply below patch? Could you check that?
> >>
> >> f2fs: report error if quota off error during umount
> >
> > I remember there was a bug in the patch.
>
> Yeah, I guess this patch can fix that one. So could you help trying to test
> again with the two patches if you have time. :)

Let me merge two patch and try some tests again. :P

>
> Thanks,
>
> >
> >>
> >> Thanks,
> >>
> >>>
> >>>> 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
> >
> > .
> >

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