[v4 PATCH 6/6] mm: hwpoison: handle non-anonymous THP correctly
From: Yang Shi <hidden>
Date: 2021-10-14 19:16:48
Also in:
linux-fsdevel, lkml
Subsystem:
hwpoison memory failure handling, memory management, the rest · Maintainers:
Miaohe Lin, Andrew Morton, Linus Torvalds
Currently hwpoison doesn't handle non-anonymous THP, but since v4.8 THP support for tmpfs and read-only file cache has been added. They could be offlined by split THP, just like anonymous THP. Acked-by: Naoya Horiguchi <redacted> Signed-off-by: Yang Shi <redacted> --- mm/memory-failure.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index f5eab593b2a7..3db738c02ab2 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c@@ -1443,14 +1443,11 @@ static int identify_page_state(unsigned long pfn, struct page *p, static int try_to_split_thp_page(struct page *page, const char *msg) { lock_page(page); - if (!PageAnon(page) || unlikely(split_huge_page(page))) { + if (unlikely(split_huge_page(page))) { unsigned long pfn = page_to_pfn(page); unlock_page(page); - if (!PageAnon(page)) - pr_info("%s: %#lx: non anonymous thp\n", msg, pfn); - else - pr_info("%s: %#lx: thp split failed\n", msg, pfn); + pr_info("%s: %#lx: thp split failed\n", msg, pfn); put_page(page); return -EBUSY; }
--
2.26.2