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/20200908075626.11976-5-osalva...@suse.de Signed-off-by: Oscar Salvador <osalva...@suse.de> Cc: Michal Hocko <mho...@kernel.org> Cc: Naoya Horiguchi <naoya.horigu...@nec.com> Cc: Oscar Salvador <osalva...@suse.com> Cc: Qian Cai <c...@lca.pw> Cc: Tony Luck <tony.l...@intel.com> Signed-off-by: Andrew Morton <a...@linux-foundation.org> Signed-off-by: Stephen Rothwell <s...@canb.auug.org.au> --- mm/madvise.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 4ce66bab53dd..4bac8e85497a 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -917,10 +917,6 @@ 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 -- 2.26.2
