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| author | Minchan Kim <minchan@kernel.org> | 2012-10-08 16:33:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:23:01 +0900 |
| commit | beb51eaa88238daba698ad837222ad277d440b6d (patch) | |
| tree | 5b29acb5a518279967d36f263425de74a05074cd | |
| parent | e46a28790e594c0876d1a84270926abf75460f61 (diff) | |
| download | linux-rpi-beb51eaa88238daba698ad837222ad277d440b6d.tar.gz linux-rpi-beb51eaa88238daba698ad837222ad277d440b6d.tar.bz2 linux-rpi-beb51eaa88238daba698ad837222ad277d440b6d.zip | |
cma: decrease cc.nr_migratepages after reclaiming pagelist
reclaim_clean_pages_from_list() reclaims clean pages before migration so
cc.nr_migratepages should be updated. Currently, there is no problem but
it can be wrong if we try to use the value in future.
Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/page_alloc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index fd86c47de86f..bb90971182bd 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5674,7 +5674,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, unsigned long start, unsigned long end) { /* This function is based on compact_zone() from compaction.c. */ - + unsigned long nr_reclaimed; unsigned long pfn = start; unsigned int tries = 0; int ret = 0; @@ -5701,7 +5701,9 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, break; } - reclaim_clean_pages_from_list(cc->zone, &cc->migratepages); + nr_reclaimed = reclaim_clean_pages_from_list(cc->zone, + &cc->migratepages); + cc->nr_migratepages -= nr_reclaimed; ret = migrate_pages(&cc->migratepages, alloc_migrate_target, |