[PATCH 3/3] quota: make Q_XQUOTASYNC a noop

[Jan Kara]

On Thu 02-02-12 11:14:12, Christoph Hellwig wrote:
> Now that XFS takes quota reservations into account there is no need to flush
> anything before reporting quotas - in addition to beeing fully transactional
> all quota information is also 100% coherent with the rest of the filesystem
> now.
  Looks fine. You can add:
Acked-by: Jan Kara <jack at suse.cz>

								Honza
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> 
> Index: xfs/fs/quota/quota.c
> ===================================================================
> --- xfs.orig/fs/quota/quota.c	2012-02-02 13:06:30.693396524 +0100
> +++ xfs/fs/quota/quota.c	2012-02-02 13:23:23.181244741 +0100
> @@ -282,10 +282,9 @@ static int do_quotactl(struct super_bloc
>  	case Q_XGETQUOTA:
>  		return quota_getxquota(sb, type, id, addr);
>  	case Q_XQUOTASYNC:
> -		/* caller already holds s_umount */
>  		if (sb->s_flags & MS_RDONLY)
>  			return -EROFS;
> -		writeback_inodes_sb(sb, WB_REASON_SYNC);
> +		/* XFS quotas are fully coherent now, making this call a noop */
>  		return 0;
>  	default:
>  		return -EINVAL;
> 
-- 
Jan Kara <jack at suse.cz>
SUSE Labs, CR