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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2020-08-11 18:37:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-12 10:58:02 -0700
commitc7073bab5772e0e2ab2c766a05f68174974b1ab5 (patch)
treea48a683d23fd3a1cc758cb6285dbf9f00db787fb /mm/page_isolation.c
parentce14489c8e2d327b56ff3253a3642a6d79b9bca2 (diff)
downloadlinux-c7073bab5772e0e2ab2c766a05f68174974b1ab5.tar.bz2
mm/page_isolation: prefer the node of the source page
Patch series "clean-up the migration target allocation functions", v5. This patch (of 9): For locality, it's better to migrate the page to the same node rather than the node of the current caller's cpu. 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: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Link: http://lkml.kernel.org/r/1594622517-20681-1-git-send-email-iamjoonsoo.kim@lge.com Link: http://lkml.kernel.org/r/1594622517-20681-2-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_isolation.c')
-rw-r--r--mm/page_isolation.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index f6d07c5f0d34..aec26d972b9f 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -309,5 +309,7 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
struct page *alloc_migrate_target(struct page *page, unsigned long private)
{
- return new_page_nodemask(page, numa_node_id(), &node_states[N_MEMORY]);
+ int nid = page_to_nid(page);
+
+ return new_page_nodemask(page, nid, &node_states[N_MEMORY]);
}