From 723a0644a7255f532575fd43245f9ef976491328 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Mon, 8 Oct 2012 16:32:52 -0700 Subject: [PATCH] mm/page_alloc: refactor out __alloc_contig_migrate_alloc() __alloc_contig_migrate_alloc() can be used by memory-hotplug so refactor it out (move + rename as a common name) into page_isolation.c. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Minchan Kim Cc: Kamezawa Hiroyuki Reviewed-by: Yasuaki Ishimatsu Acked-by: Michal Nazarewicz Cc: Marek Szyprowski Cc: Wen Congyang Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-isolation.h | 3 ++- mm/page_alloc.c | 14 +------------- mm/page_isolation.c | 11 +++++++++++ 3 files changed, 14 insertions(+), 14 deletions(-) diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index fca8c0a5c188..76a9539cfd3f 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -41,6 +41,7 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); */ int set_migratetype_isolate(struct page *page); void unset_migratetype_isolate(struct page *page, unsigned migratetype); - +struct page *alloc_migrate_target(struct page *page, unsigned long private, + int **resultp); #endif diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b97cf12f07a9..8ac593893e6e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5667,18 +5667,6 @@ static unsigned long pfn_max_align_up(unsigned long pfn) pageblock_nr_pages)); } -static struct page * -__alloc_contig_migrate_alloc(struct page *page, unsigned long private, - int **resultp) -{ - gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE; - - if (PageHighMem(page)) - gfp_mask |= __GFP_HIGHMEM; - - return alloc_page(gfp_mask); -} - /* [start, end) must belong to a single zone. */ static int __alloc_contig_migrate_range(struct compact_control *cc, unsigned long start, unsigned long end) @@ -5714,7 +5702,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, reclaim_clean_pages_from_list(cc->zone, &cc->migratepages); ret = migrate_pages(&cc->migratepages, - __alloc_contig_migrate_alloc, + alloc_migrate_target, 0, false, MIGRATE_SYNC); } diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 5f34a9053ce0..f2f5b4818e94 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -255,3 +255,14 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn) spin_unlock_irqrestore(&zone->lock, flags); return ret ? 0 : -EBUSY; } + +struct page *alloc_migrate_target(struct page *page, unsigned long private, + int **resultp) +{ + gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE; + + if (PageHighMem(page)) + gfp_mask |= __GFP_HIGHMEM; + + return alloc_page(gfp_mask); +}