The patch titled
Subject: mm,hwpoison: remove drain_all_pages from shake_page
has been added to the -mm tree. Its filename is
mmhwpoison-remove-drain_all_pages-from-shake_page.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mmhwpoison-remove-drain_all_pages-from-shake_page.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mmhwpoison-remove-drain_all_pages-from-shake_page.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm,hwpoison: remove drain_all_pages from shake_page
get_hwpoison_page already drains pcplists, previously disabling them when
trying to grab a refcount. We do not need shake_page to take care of it
anymore.
Link: https://lkml.kernel.org/r/20201204102558.31607-4-osalvador@xxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Qian Cai <qcai@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
--- a/mm/memory-failure.c~mmhwpoison-remove-drain_all_pages-from-shake_page
+++ a/mm/memory-failure.c
@@ -263,8 +263,8 @@ static int kill_proc(struct to_kill *tk,
}
/*
- * When a unknown page type is encountered drain as many buffers as possible
- * in the hope to turn the page into a LRU or free page, which we can handle.
+ * Unknown page type encountered. Try to check whether it can turn PageLRU by
+ * lru_add_drain_all, or a free page by reclaiming slabs when possible.
*/
void shake_page(struct page *p, int access)
{
@@ -273,9 +273,6 @@ void shake_page(struct page *p, int acce
if (!PageSlab(p)) {
lru_add_drain_all();
- if (PageLRU(p))
- return;
- drain_all_pages(page_zone(p));
if (PageLRU(p) || is_free_buddy_page(p))
return;
}
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mmhwpoison-drain-pcplists-before-bailing-out-for-non-buddy-zero-refcount-page.patch
mmhwpoison-take-free-pages-off-the-buddy-freelists.patch
mmhwpoison-take-free-pages-off-the-buddy-freelists-for-hugetlb.patch
mmhwpoison-drop-unneeded-pcplist-draining.patch
mmhwpoison-refactor-get_any_page.patch
mmhwpoison-disable-pcplists-before-grabbing-a-refcount.patch
mmhwpoison-remove-drain_all_pages-from-shake_page.patch
mmhugetlb-remove-unneded-initialization.patch
