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authorOscar Salvador <osalvador@suse.de>2020-12-14 19:11:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 12:13:44 -0800
commit32409cba3f66810626c1c15b728c31968d6bfa92 (patch)
tree7ba8a2e46ca4938bd0983138ad09ce924ed4530a
parenta8b2c2ce89d4e01062de69b89cafad97cd0fc01b (diff)
mm,hwpoison: drop unneeded pcplist draining
memory_failure and soft_offline_path paths now drain pcplists by calling get_hwpoison_page. 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. Link: https://lkml.kernel.org/r/20201013144447.6706-5-osalvador@suse.de Signed-off-by: Oscar Salvador <osalvador@suse.de> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/madvise.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/mm/madvise.c b/mm/madvise.c
index 13f5677b9322..fe5c2327e421 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -877,7 +877,6 @@ static long madvise_remove(struct vm_area_struct *vma,
static int madvise_inject_error(int behavior,
unsigned long start, unsigned long end)
{
- struct zone *zone;
unsigned long size;
if (!capable(CAP_SYS_ADMIN))
@@ -922,10 +921,6 @@ 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;
}
#endif