linux-kernel - [PATCH] ceph: avoid meaningless calling ceph_caps_revoking if sync_mode == WB_SYNC

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Message-ID: <201306191512024406391@gmail.com>
Date:	Wed, 19 Jun 2013 15:12:06 +0800
From:	majianpeng <majianpeng@...il.com>
To:	sage <sage@...tank.com>
Cc:	ceph-devel <ceph-devel@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] ceph: avoid meaningless calling ceph_caps_revoking if sync_mode == WB_SYNC_ALL.

Signed-off-by: Jianpeng Ma <majianpeng@...il.com>
---
 fs/ceph/addr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 3e68ac1..25fa8b8 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -677,8 +677,8 @@ static int ceph_writepages_start(struct address_space *mapping,
 	 * integrity write (e.g., O_SYNC write or fsync()), or if our
 	 * cap is being revoked.
 	 */
-	do_sync = wbc->sync_mode == WB_SYNC_ALL;
-	if (ceph_caps_revoking(ci, CEPH_CAP_FILE_BUFFER))
+	if ((wbc->sync_mode == WB_SYNC_ALL) ||
+		ceph_caps_revoking(ci, CEPH_CAP_FILE_BUFFER))
 		do_sync = 1;
 	dout("writepages_start %p dosync=%d (mode=%s)\n",
 	     inode, do_sync,
-- 
1.8.3.rc1.44.gb387c77