From 5e19bfb5fbc1ca130675e1cc395717eb8dee6458 Mon Sep 17 00:00:00 2001
From: Vlastimil Babka <vbabka@suse.cz>
Date: Tue, 3 Jun 2014 09:37:10 +1000
Subject: [PATCH] 
 mm-compaction-properly-signal-and-act-upon-lock-and-need_sched-contention-fix-2

Step 1: Change function name and comment between v1 and v2 so that the return
        value signals the opposite thing.
Step 2: Change the call sites to reflect the opposite return value.
Step 3: ???
Step 4: Make a complete fool of yourself.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Kevin Hilman <khilman@linaro.org>
Reported-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/compaction.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index a525cd47a9d5..51750197db11 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -237,13 +237,13 @@ static inline bool compact_should_abort(struct compact_control *cc)
 	if (need_resched()) {
 		if (cc->mode == MIGRATE_ASYNC) {
 			cc->contended = true;
-			return false;
+			return true;
 		}
 
 		cond_resched();
 	}
 
-	return true;
+	return false;
 }
 
 /* Returns true if the page is within a block suitable for migration to */
-- 
2.39.5