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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2020-08-11 18:37:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-12 10:58:02 -0700
commitb4b382238ed2f94f0d3860f9120b66404fa99463 (patch)
tree90637dc6904c05f2919849b5c102fd32bbcba61a /mm
parentc7073bab5772e0e2ab2c766a05f68174974b1ab5 (diff)
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 <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Roman Gushchin <guro@fb.com> Link: http://lkml.kernel.org/r/1594622517-20681-3-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/migrate.c29
1 files changed, 29 insertions, 0 deletions
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)