Re: [PATCH v3 3/3] xfs: don't leak quotacheck dquots when cow recovery fails

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On Fri, Aug 11, 2017 at 12:48:44PM -0700, Darrick J. Wong wrote:
> If we fail a mount on account of cow recovery errors, it's possible that
> a previous quotacheck left some dquots in memory.  The bailout clause of
> xfs_mountfs forgets to purge these, and so we leak them.  Fix that.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> v3: move call to the same place as it is in unmountfs
> v2: move call below quota inode removal
> ---

Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>

>  fs/xfs/xfs_mount.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
> index d63a367..a46c9d7 100644
> --- a/fs/xfs/xfs_mount.c
> +++ b/fs/xfs/xfs_mount.c
> @@ -1034,6 +1034,8 @@ xfs_mountfs(
>  	IRELE(rip);
>  	cancel_delayed_work_sync(&mp->m_reclaim_work);
>  	xfs_reclaim_inodes(mp, SYNC_WAIT);
> +	/* Clean out dquots that might be in memory after quotacheck. */
> +	xfs_qm_unmount(mp);
>   out_log_dealloc:
>  	mp->m_flags |= XFS_MOUNT_UNMOUNTING;
>  	xfs_log_mount_cancel(mp);
> --
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