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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2012-10-09 01:31:57 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 09:22:44 +0200 |
| commit | 770c8aaaf6f04a87e6765f24d497132de9152a46 (patch) | |
| tree | c93d594ad97750bee9115778ddc160e0414c342a /mm/mincore.c | |
| parent | mm: cma: discard clean pages during contiguous allocation instead of migration (diff) | |
| download | linux-770c8aaaf6f04a87e6765f24d497132de9152a46.tar.xz linux-770c8aaaf6f04a87e6765f24d497132de9152a46.zip | |
mm: fix tracing in free_pcppages_bulk()
page->private gets re-used in __free_one_page() to store page order
(so trace_mm_page_pcpu_drain() may print order instead of migratetype)
thus migratetype value must be cached locally.
Fixes regression introduced in commit a7016235a61d ("mm: fix migratetype
bug which slowed swapping"). This caused incorrect data to be attached
to the mm_page_pcpu_drain trace event.
[akpm@linux-foundation.org: add comment]
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mincore.c')
0 files changed, 0 insertions, 0 deletions