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[v2,4/5] mm,hwpoison: Drop unneeded pcplist draining

Message ID 20200908075626.11976-5-osalvador@suse.de (mailing list archive)
State New, archived
Headers show
Series HWpoison: further fixes and cleanups | expand

Commit Message

Oscar Salvador Sept. 8, 2020, 7:56 a.m. UTC
memory_failure and soft_offline_path paths now drain pcplists by calling
memory_failure flags the page as HWPoison before, so that page cannot longer
go into a pcplist, and soft_offline_page only flags a page as HWPoison
if 1) we took the page off a buddy freelist 2) the page was in-use
and we migrated it 3) was a clean pagecache.

Because of that, a page cannot longer be poisoned and be in a pcplist.

Signed-off-by: Oscar Salvador <osalvador@suse.de>
 mm/madvise.c | 4 ----
 1 file changed, 4 deletions(-)
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diff --git a/mm/madvise.c b/mm/madvise.c
index e92e06890b08..e7cdfabd8aca 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -930,10 +930,6 @@  static int madvise_inject_error(int behavior,
 			return ret;
-	/* Ensure that all poisoned pages are removed from per-cpu lists */
-	for_each_populated_zone(zone)
-		drain_all_pages(zone);
 	return 0;