From: Miaohe Lin <linmiaohe@huawei.com>
Date: Tue, 30 Aug 2022 12:35:59 +0000 (+0800)
Subject: mm, hwpoison: use ClearPageHWPoison() in memory_failure()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=2fe62e222680e1d6ff7112cad5bcccdc858d020d;p=linux.git

mm, hwpoison: use ClearPageHWPoison() in memory_failure()

Patch series "A few cleanup patches for memory-failure".

his series contains a few cleanup patches to use __PageMovable() to detect
non-lru movable pages, use num_poisoned_pages_sub() to reduce multiple
atomic ops overheads and so on.  More details can be found in the
respective changelogs.


This patch (of 6):

Use ClearPageHWPoison() instead of TestClearPageHWPoison() to clear page
hwpoison flags to avoid unneeded full memory barrier overhead.

Link: https://lkml.kernel.org/r/20220830123604.25763-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20220830123604.25763-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 265378237c22..3fb3cd834c8e 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2131,7 +2131,7 @@ try_again:
 	page_flags = p->flags;
 
 	if (hwpoison_filter(p)) {
-		TestClearPageHWPoison(p);
+		ClearPageHWPoison(p);
 		unlock_page(p);
 		put_page(p);
 		res = -EOPNOTSUPP;