The patch titled
Subject: filemap: remove PageHWPoison check from next_uptodate_page()
has been added to the -mm tree. Its filename is
filemap-remove-pagehwpoison-check-from-next_uptodate_page.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/filemap-remove-pagehwpoison-check-from-next_uptodate_page.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/filemap-remove-pagehwpoison-check-from-next_uptodate_page.patch
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: filemap: remove PageHWPoison check from next_uptodate_page()
Pages are individually marked as suffering from hardware poisoning.
Checking that the head page is not hardware poisoned doesn't make sense;
we might be after a subpage. We check each page individually before we
use it, so this was an optimisation gone wrong.
Link: https://lkml.kernel.org/r/20211120174429.2596303-1-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Cc: "Kirill A . Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/filemap.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/filemap.c~filemap-remove-pagehwpoison-check-from-next_uptodate_page
+++ a/mm/filemap.c
@@ -3253,8 +3253,6 @@ static struct page *next_uptodate_page(s
goto skip;
if (!PageUptodate(page) || PageReadahead(page))
goto skip;
- if (PageHWPoison(page))
- goto skip;
if (!trylock_page(page))
goto skip;
if (page->mapping != mapping)
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
filemap-remove-pagehwpoison-check-from-next_uptodate_page.patch
mmfs-split-dump_mapping-out-from-dump_page.patch
