The patch titled
Subject: mm,hwpoison: drop unneeded pcplist draining
has been added to the -mm tree. Its filename is
mmhwpoison-drop-unneeded-pcplist-draining.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mmhwpoison-drop-unneeded-pcplist-draining.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mmhwpoison-drop-unneeded-pcplist-draining.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: 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/20200902094510.10727-5-osalvador@xxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/madvise.c | 4 ----
1 file changed, 4 deletions(-)
--- a/mm/madvise.c~mmhwpoison-drop-unneeded-pcplist-draining
+++ a/mm/madvise.c
@@ -914,10 +914,6 @@ static int madvise_inject_error(int beha
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
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mmhwpoison-un-export-get_hwpoison_page-and-make-it-static.patch
mmhwpoison-kill-put_hwpoison_page.patch
mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch
mmhwpoison-rework-soft-offline-for-free-pages.patch
mmhwpoison-rework-soft-offline-for-in-use-pages.patch
mmhwpoison-refactor-soft_offline_huge_page-and-__soft_offline_page.patch
mmhwpoison-return-0-if-the-page-is-already-poisoned-in-soft-offline.patch
mmhwpoison-take-free-pages-off-the-buddy-freelists.patch
mmhwpoison-refactor-madvise_inject_error.patch
mmhwpoison-drain-pcplists-before-bailing-out-for-non-buddy-zero-refcount-page.patch
mmhwpoison-drop-unneeded-pcplist-draining.patch
