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[PATCH 09/17] quota: Make Q_XQUOTASYNC support VFS quota syncing

To: linux-fsdevel@xxxxxxxxxxxxxxx
Subject: [PATCH 09/17] quota: Make Q_XQUOTASYNC support VFS quota syncing
From: Jan Kara <jack@xxxxxxx>
Date: Fri, 16 Jan 2015 13:47:43 +0100
Cc: xfs@xxxxxxxxxxx, cluster-devel@xxxxxxxxxx, ocfs2-devel@xxxxxxxxxxxxxx, Jan Kara <jack@xxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1421412471-4747-1-git-send-email-jack@xxxxxxx>
References: <1421412471-4747-1-git-send-email-jack@xxxxxxx>
Call ->quota_sync method from Q_XQUOTASYNC for better userspace
compatibility.

Signed-off-by: Jan Kara <jack@xxxxxxx>
---
 fs/quota/quota.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 2cc50b35a3b5..5ec04321aace 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -477,8 +477,9 @@ static int do_quotactl(struct super_block *sb, int type, 
int cmd, qid_t id,
        case Q_XQUOTASYNC:
                if (sb->s_flags & MS_RDONLY)
                        return -EROFS;
-               /* XFS quotas are fully coherent now, making this call a noop */
-               return 0;
+               if (!sb->s_qcop->quota_sync)
+                       return 0;
+               return sb->s_qcop->quota_sync(sb, type);
        default:
                return -EINVAL;
        }
-- 
2.1.2

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