From 82fd1a9a8ced9607312b54859572bcc6211e8919 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Tue, 6 Jan 2009 14:39:11 -0800
Subject: [PATCH] mm: write_cache_pages more terminate quickly
Now that we have the early-termination logic in place, it makes sense to
bail out early in all other cases where done is set to 1.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/page-writeback.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0d986c13d4733..08d2b960b2945 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -983,12 +983,15 @@ int write_cache_pages(struct address_space *mapping,
if (wbc->sync_mode == WB_SYNC_NONE) {
wbc->nr_to_write--;
- if (wbc->nr_to_write <= 0)
+ if (wbc->nr_to_write <= 0) {
done = 1;
+ break;
+ }
}
if (wbc->nonblocking && bdi_write_congested(bdi)) {
wbc->encountered_congestion = 1;
done = 1;
+ break;
}
}
pagevec_release(&pvec);
--
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