[PATCH v13 120/137] mm/filemap: Remove PageHWPoison check from next_uptodate_page()

From: Matthew Wilcox (Oracle)
Date: Mon Jul 12 2021 - 00:11:04 EST

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.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
mm/filemap.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 9da9bac99ecd..9a6550c8b7c7 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3127,8 +3127,6 @@ static struct page *next_uptodate_page(struct page *page,
goto skip;
if (!PageUptodate(page) || PageReadahead(page))
goto skip;
- if (PageHWPoison(page))
- goto skip;
if (!trylock_page(page))
goto skip;
if (page->mapping != mapping)