path: root/mm/page_alloc.c
diff options
authorMinchan Kim <>2021-04-29 23:01:01 -0700
committerLinus Torvalds <>2021-04-30 11:20:42 -0700
commitcef4c7d29d776643e86b600e5ea823f047445d0b (patch)
treee46030fddae06c069c0b911d012f7535a254667d /mm/page_alloc.c
parent77febec206262bd80c4176f2281a7970cfe69536 (diff)
mm: remove lru_add_drain_all in alloc_contig_range
__alloc_contig_migrate_range already has lru_add_drain_all call via migrate_prep. It's necessary to move LRU taget pages into LRU list to be able to isolated. However, lru_add_drain_all call after __alloc_contig_migrate_range is pointless since it has changed source page freeing from putback_lru_pages to put_page[1]. This patch removes it. [1] c6c919eb90e0, ("mm: use put_page() to free page instead of putback_lru_page()" Link: Signed-off-by: Minchan Kim <> Reviewed-by: Oscar Salvador <> Acked-by: Vlastimil Babka <> Acked-by: Michal Hocko <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'mm/page_alloc.c')
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e59d5450d891..c73557bb8c58 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -8649,8 +8649,6 @@ int alloc_contig_range(unsigned long start, unsigned long end,
* isolated thus they won't get removed from buddy.
- lru_add_drain_all();
order = 0;
outer_start = start;
while (!PageBuddy(pfn_to_page(outer_start))) {