diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-12-13 01:51:19 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-13 05:38:32 +0400 |
| commit | be49a6e13537f32f85bd8c4ba04317ca36ca60ff (patch) | |
| tree | 00f629b7be8203ce1fef100ab8875e291033dc5d | |
| parent | c8bf2d8ba4fbc093de7c0d192fe5d2531f14b8b9 (diff) | |
| download | linux-be49a6e13537f32f85bd8c4ba04317ca36ca60ff.tar.xz | |
mm: use migrate_prep() instead of migrate_prep_local()
__alloc_contig_migrate_range() should use all possible ways to get all the
pages migrated from the given memory range, so pruning per-cpu lru lists
for all CPUs is required, regadless the cost of such operation. Otherwise
some pages which got stuck at per-cpu lru list might get missed by
migration procedure causing the contiguous allocation to fail.
Reported-by: SeongHwan Yoon <sunghwan.yun@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 5a8d339d282a..4171cd4f8257 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5727,7 +5727,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, unsigned int tries = 0; int ret = 0; - migrate_prep_local(); + migrate_prep(); while (pfn < end || !list_empty(&cc->migratepages)) { if (fatal_signal_pending(current)) { |