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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2012-10-10 15:53:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-11 08:50:14 +0900 |
| commit | 627260595ca6abcb16d68a3732bac6b547e112d6 (patch) | |
| tree | e129ac3500e1636f6b1e2ffaf3cd1443557af32c | |
| parent | 1633dbbacbaa3a2f95ef901caf9d0b32728c10b6 (diff) | |
| download | linux-3.10-627260595ca6abcb16d68a3732bac6b547e112d6.tar.gz linux-3.10-627260595ca6abcb16d68a3732bac6b547e112d6.tar.bz2 linux-3.10-627260595ca6abcb16d68a3732bac6b547e112d6.zip | |
mm: compaction: fix bit ranges in {get,clear,set}_pageblock_skip()
{get,clear,set}_pageblock_skip() use incorrect bit ranges (please compare
to bit ranges used by {get,set}_pageblock_flags() used for migration
types) and can overwrite pageblock migratetype of the next pageblock in
the bitmap.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/pageblock-flags.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h index eed27f4f4c3..be655e4a2a7 100644 --- a/include/linux/pageblock-flags.h +++ b/include/linux/pageblock-flags.h @@ -71,13 +71,13 @@ void set_pageblock_flags_group(struct page *page, unsigned long flags, #ifdef CONFIG_COMPACTION #define get_pageblock_skip(page) \ get_pageblock_flags_group(page, PB_migrate_skip, \ - PB_migrate_skip + 1) + PB_migrate_skip) #define clear_pageblock_skip(page) \ set_pageblock_flags_group(page, 0, PB_migrate_skip, \ - PB_migrate_skip + 1) + PB_migrate_skip) #define set_pageblock_skip(page) \ set_pageblock_flags_group(page, 1, PB_migrate_skip, \ - PB_migrate_skip + 1) + PB_migrate_skip) #endif /* CONFIG_COMPACTION */ #define get_pageblock_flags(page) \ |