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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2012-10-08 16:32:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:22:45 +0900 |
| commit | d95ea5d18e699515468368415c93ed49b1a3221b (patch) | |
| tree | 5e4828e1ad279462c64c08dd305905e610418d90 /mm/internal.h | |
| parent | d1ce749a0db12202b711d1aba1d29e823034648d (diff) | |
| download | lwn-d95ea5d18e699515468368415c93ed49b1a3221b.tar.gz lwn-d95ea5d18e699515468368415c93ed49b1a3221b.zip | |
cma: fix watermark checking
* Add ALLOC_CMA alloc flag and pass it to [__]zone_watermark_ok()
(from Minchan Kim).
* During watermark check decrease available free pages number by
free CMA pages number if necessary (unmovable allocations cannot
use pages from CMA areas).
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index 8312d4fadf59..96cda4c6ac56 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -358,4 +358,18 @@ extern unsigned long vm_mmap_pgoff(struct file *, unsigned long, extern void set_pageblock_order(void); unsigned long reclaim_clean_pages_from_list(struct zone *zone, struct list_head *page_list); +/* The ALLOC_WMARK bits are used as an index to zone->watermark */ +#define ALLOC_WMARK_MIN WMARK_MIN +#define ALLOC_WMARK_LOW WMARK_LOW +#define ALLOC_WMARK_HIGH WMARK_HIGH +#define ALLOC_NO_WATERMARKS 0x04 /* don't check watermarks at all */ + +/* Mask to get the watermark bits */ +#define ALLOC_WMARK_MASK (ALLOC_NO_WATERMARKS-1) + +#define ALLOC_HARDER 0x10 /* try to alloc harder */ +#define ALLOC_HIGH 0x20 /* __GFP_HIGH set */ +#define ALLOC_CPUSET 0x40 /* check for correct cpuset */ +#define ALLOC_CMA 0x80 /* allow allocations from CMA areas */ + #endif /* __MM_INTERNAL_H */ |