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| author |   Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2020-08-11 18:37:14 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-12 10:58:02 -0700 |
| commit | b4b382238ed2f94f0d3860f9120b66404fa99463 (patch) | |
| tree | 90637dc6904c05f2919849b5c102fd32bbcba61a /mm | |
| parent | mm/page_isolation: prefer the node of the source page (diff) | |
| download | wireguard-linux-b4b382238ed2f94f0d3860f9120b66404fa99463.tar.xz wireguard-linux-b4b382238ed2f94f0d3860f9120b66404fa99463.zip | |
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.c | 29 |
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) |