From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gu Zheng Subject: [PATCH] fs/buffer.c: exit if already confirmed page has dirty and writeback buffers Date: Fri, 01 Nov 2013 18:07:02 +0800 Message-ID: <52737D46.1000202@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: fsdevel , linux-kernel To: Al Viro Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Stop the loop of iterating bh if we have confirmed page has dirty and writeback buffers. Signed-off-by: Gu Zheng --- fs/buffer.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index 6024877..519cc5c 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -112,7 +112,7 @@ void buffer_check_dirty_writeback(struct page *page, *dirty = true; bh = bh->b_this_page; - } while (bh != head); + } while ((bh != head) && !(*writeback && *dirty)); } EXPORT_SYMBOL(buffer_check_dirty_writeback); -- 1.7.7