linux-kernel - [Patch v2 2/4] mm/page_alloc.c: bad_[reason|flags] is not necessary when PageHWPoison

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Date:   Mon, 20 Jan 2020 11:04:13 +0800
From:   Wei Yang <richardw.yang@...ux.intel.com>
To:     akpm@...ux-foundation.org, richardw.yang@...ux.intel.com
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        rientjes@...gle.com
Subject: [Patch v2 2/4] mm/page_alloc.c: bad_[reason|flags] is not necessary when PageHWPoison

Since function returns directly, bad_[reason|flags] is not used any
where.

This is a following cleanup for commit e570f56cccd21 ("mm:
check_new_page_bad() directly returns in __PG_HWPOISON case")

Signed-off-by: Wei Yang <richardw.yang@...ux.intel.com>
Acked-by: David Rientjes <rientjes@...gle.com>
---
 mm/page_alloc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0cf6218aaba7..a43b9d2482f2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2051,8 +2051,6 @@ static void check_new_page_bad(struct page *page)
 	if (unlikely(page_ref_count(page) != 0))
 		bad_reason = "nonzero _refcount";
 	if (unlikely(page->flags & __PG_HWPOISON)) {
-		bad_reason = "HWPoisoned (hardware-corrupted)";
-		bad_flags = __PG_HWPOISON;
 		/* Don't complain about hwpoisoned pages */
 		page_mapcount_reset(page); /* remove PageBuddy */
 		return;
-- 
2.17.1