diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/compaction.c | 8 | ||||
| -rw-r--r-- | mm/internal.h | 14 | ||||
| -rw-r--r-- | mm/page_alloc.c | 31 |
3 files changed, 36 insertions, 17 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 0fbc6b73a522..1f61bcbd6262 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -934,6 +934,7 @@ unsigned long try_to_compact_pages(struct zonelist *zonelist, struct zoneref *z; struct zone *zone; int rc = COMPACT_SKIPPED; + int alloc_flags = 0; /* Check if the GFP flags allow compaction */ if (!order || !may_enter_fs || !may_perform_io) @@ -941,6 +942,10 @@ unsigned long try_to_compact_pages(struct zonelist *zonelist, count_vm_event(COMPACTSTALL); +#ifdef CONFIG_CMA + if (allocflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE) + alloc_flags |= ALLOC_CMA; +#endif /* Compact each zone in the list */ for_each_zone_zonelist_nodemask(zone, z, zonelist, high_zoneidx, nodemask) { @@ -951,7 +956,8 @@ unsigned long try_to_compact_pages(struct zonelist *zonelist, rc = max(status, rc); /* If a normal allocation would succeed, stop compacting */ - if (zone_watermark_ok(zone, order, low_wmark_pages(zone), 0, 0)) + if (zone_watermark_ok(zone, order, low_wmark_pages(zone), 0, + alloc_flags)) break; } 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 */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 6969a8abdba2..f2c7cc6a3039 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1541,19 +1541,6 @@ failed: return NULL; } -/* 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 */ - #ifdef CONFIG_FAIL_PAGE_ALLOC static struct { @@ -1648,7 +1635,11 @@ static bool __zone_watermark_ok(struct zone *z, int order, unsigned long mark, min -= min / 2; if (alloc_flags & ALLOC_HARDER) min -= min / 4; - +#ifdef CONFIG_CMA + /* If allocation can't use CMA areas don't use free CMA pages */ + if (!(alloc_flags & ALLOC_CMA)) + free_pages -= zone_page_state(z, NR_FREE_CMA_PAGES); +#endif if (free_pages <= min + lowmem_reserve) return false; for (o = 0; o < order; o++) { @@ -2362,7 +2353,10 @@ gfp_to_alloc_flags(gfp_t gfp_mask) unlikely(test_thread_flag(TIF_MEMDIE)))) alloc_flags |= ALLOC_NO_WATERMARKS; } - +#ifdef CONFIG_CMA + if (allocflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE) + alloc_flags |= ALLOC_CMA; +#endif return alloc_flags; } @@ -2587,6 +2581,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, struct page *page = NULL; int migratetype = allocflags_to_migratetype(gfp_mask); unsigned int cpuset_mems_cookie; + int alloc_flags = ALLOC_WMARK_LOW|ALLOC_CPUSET; gfp_mask &= gfp_allowed_mask; @@ -2615,9 +2610,13 @@ retry_cpuset: if (!preferred_zone) goto out; +#ifdef CONFIG_CMA + if (allocflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE) + alloc_flags |= ALLOC_CMA; +#endif /* First allocation attempt */ page = get_page_from_freelist(gfp_mask|__GFP_HARDWALL, nodemask, order, - zonelist, high_zoneidx, ALLOC_WMARK_LOW|ALLOC_CPUSET, + zonelist, high_zoneidx, alloc_flags, preferred_zone, migratetype); if (unlikely(!page)) page = __alloc_pages_slowpath(gfp_mask, order, |