The patch titled
Subject: mm/memory-failure.c: remove obsolete comment
has been added to the -mm tree. Its filename is
mm-hwpoison-remove-obsolete-comment.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-hwpoison-remove-obsolete-comment.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-hwpoison-remove-obsolete-comment.patch
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------------------------------------------------------
From: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Subject: mm/memory-failure.c: remove obsolete comment
With the introduction of mf_mutex, most of memory error handling process
is mutually exclusive, so the in-line comment about subtlety about
double-checking PageHWPoison is no more correct. So remove it.
Link: https://lkml.kernel.org/r/20220125025601.3054511-1-naoya.horiguchi@xxxxxxxxx
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Suggested-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Reviewed-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 6 ------
1 file changed, 6 deletions(-)
--- a/mm/memory-failure.c~mm-hwpoison-remove-obsolete-comment
+++ a/mm/memory-failure.c
@@ -2150,12 +2150,6 @@ static int __soft_offline_page(struct pa
.gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL,
};
- /*
- * Check PageHWPoison again inside page lock because PageHWPoison
- * is set by memory_failure() outside page lock. Note that
- * memory_failure() also double-checks PageHWPoison inside page lock,
- * so there's no race between soft_offline_page() and memory_failure().
- */
lock_page(page);
if (!PageHuge(page))
wait_on_page_writeback(page);
_
Patches currently in -mm which might be from naoya.horiguchi@xxxxxxx are
mm-hwpoison-remove-obsolete-comment.patch
