* [PATCH] fs/buffer.c: exit if already confirmed page has dirty and writeback buffers
@ 2013-11-01 10:07 Gu Zheng
0 siblings, 0 replies; only message in thread
From: Gu Zheng @ 2013-11-01 10:07 UTC (permalink / raw)
To: Al Viro; +Cc: fsdevel, linux-kernel
Stop the loop of iterating bh if we have confirmed page
has dirty and writeback buffers.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
---
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
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2013-11-01 10:07 [PATCH] fs/buffer.c: exit if already confirmed page has dirty and writeback buffers Gu Zheng
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