diff options
| author | Mel Gorman <mgorman@suse.de> | 2012-10-19 13:56:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-19 14:07:47 -0700 |
| commit | 0db63d7e25f96e2c6da925c002badf6f144ddf30 (patch) | |
| tree | cf07c0f992a98cdaabac9bc7415f433ee8bbfdf4 /mm/compaction.c | |
| parent | bac716966094e39c8027428993a57b79f2dd6c97 (diff) | |
| download | lwn-0db63d7e25f96e2c6da925c002badf6f144ddf30.tar.gz lwn-0db63d7e25f96e2c6da925c002badf6f144ddf30.zip | |
mm: compaction: correct the nr_strict va isolated check for CMA
Thierry reported that the "iron out" patch for isolate_freepages_block()
had problems due to the strict check being too strict with "mm:
compaction: Iron out isolate_freepages_block() and
isolate_freepages_range() -fix1". It's possible that more pages than
necessary are isolated but the check still fails and I missed that this
fix was not picked up before RC1. This same problem has been identified
in 3.7-RC1 by Tony Prisk and should be addressed by the following patch.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Tested-by: Tony Prisk <linux@prisktech.co.nz>
Reported-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Richard Davies <richard@arachsys.com>
Cc: Shaohua Li <shli@kernel.org>
Cc: Avi Kivity <avi@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/compaction.c')
| -rw-r--r-- | mm/compaction.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 2c4ce17651d8..9eef55838fca 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -346,7 +346,7 @@ static unsigned long isolate_freepages_block(struct compact_control *cc, * pages requested were isolated. If there were any failures, 0 is * returned and CMA will fail. */ - if (strict && nr_strict_required != total_isolated) + if (strict && nr_strict_required > total_isolated) total_isolated = 0; if (locked) |