diff options
| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2013-11-05 16:55:54 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-11-05 16:55:54 +1100 |
| commit | aae15391bdc3c8a219ccba5d6f4eeb9cefdb9e92 (patch) | |
| tree | 866a9a9223894714ac974b74e0806fa2d8650003 /mm | |
| parent | 19c7a01a260c4d97e64170a2a199c7ee76f74d7c (diff) | |
mm: fix page_group_by_mobility_disabled breakage
Currently, set_pageblock_migratetype() screws up MIGRATE_CMA and
MIGRATE_ISOLATE if page_group_by_mobility_disabled is true. It rewrites
the argument to MIGRATE_UNMOVABLE and we lost these attribute.
The problem was introduced by 49255c619f ("page allocator: move check for
disabled anti-fragmentation out of fastpath"). So a 4 year old issue may
mean that nobody uses page_group_by_mobility_disabled.
But anyway, this patch fixes the problem.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index c7a2b7cba389..24680e9cc739 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -234,8 +234,8 @@ int page_group_by_mobility_disabled __read_mostly; void set_pageblock_migratetype(struct page *page, int migratetype) { - - if (unlikely(page_group_by_mobility_disabled)) + if (unlikely(page_group_by_mobility_disabled && + migratetype < MIGRATE_PCPTYPES)) migratetype = MIGRATE_UNMOVABLE; set_pageblock_flags_group(page, (unsigned long)migratetype, |