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[126/262] mm: hwpoison: handle non-anonymous THP correctly

Message ID 20211105204114.oqF4Oa0js%akpm@linux-foundation.org (mailing list archive)
State New
Headers show
Series [001/262] scripts/spelling.txt: add more spellings to spelling.txt | expand

Commit Message

Andrew Morton Nov. 5, 2021, 8:41 p.m. UTC 
From: Yang Shi <shy828301@gmail.com>
Subject: mm: hwpoison: handle non-anonymous THP correctly

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.

Link: https://lkml.kernel.org/r/20211020210755.23964-7-shy828301@gmail.com
Signed-off-by: Yang Shi <shy828301@gmail.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory-failure.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
diff mbox series

Patch

--- a/mm/memory-failure.c~mm-hwpoison-handle-non-anonymous-thp-correctly
+++ a/mm/memory-failure.c
@@ -1444,14 +1444,11 @@  static int identify_page_state(unsigned
 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;
 	}