From b4b382238ed2f94f0d3860f9120b66404fa99463 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Tue, 11 Aug 2020 18:37:14 -0700 Subject: mm/migrate: move migration helper from .h to .c It's not performance sensitive function. Move it to .c. This is a preparation step for future change. Signed-off-by: Joonsoo Kim Signed-off-by: Andrew Morton Reviewed-by: Vlastimil Babka Acked-by: Mike Kravetz Acked-by: Michal Hocko Cc: Christoph Hellwig Cc: Naoya Horiguchi Cc: Roman Gushchin Link: http://lkml.kernel.org/r/1594622517-20681-3-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Linus Torvalds --- mm/migrate.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'mm/migrate.c') diff --git a/mm/migrate.c b/mm/migrate.c index 52896b4921a7..5269bc520aee 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1538,6 +1538,35 @@ out: return rc; } +struct page *new_page_nodemask(struct page *page, + int preferred_nid, nodemask_t *nodemask) +{ + gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL; + unsigned int order = 0; + struct page *new_page = NULL; + + if (PageHuge(page)) + return alloc_huge_page_nodemask( + page_hstate(compound_head(page)), + preferred_nid, nodemask); + + if (PageTransHuge(page)) { + gfp_mask |= GFP_TRANSHUGE; + order = HPAGE_PMD_ORDER; + } + + if (PageHighMem(page) || (zone_idx(page_zone(page)) == ZONE_MOVABLE)) + gfp_mask |= __GFP_HIGHMEM; + + new_page = __alloc_pages_nodemask(gfp_mask, order, + preferred_nid, nodemask); + + if (new_page && PageTransHuge(new_page)) + prep_transhuge_page(new_page); + + return new_page; +} + #ifdef CONFIG_NUMA static int store_status(int __user *status, int start, int value, int nr) -- cgit v1.2.3