From: "zhaoyang.huang" <zhaoyang.huang@unisoc.com>
To: Mel Gorman <mgorman@techsingularity.net>,
Andrew Morton <akpm@linux-foundation.org>,
Zhaoyang Huang <huangzhaoyang@gmail.com>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>, <ke.wang@unisoc.com>
Subject: [PATCH] mm: check high-order page when free it to pcp
Date: Mon, 19 Sep 2022 11:47:18 +0800 [thread overview]
Message-ID: <1663559238-22918-1-git-send-email-zhaoyang.huang@unisoc.com> (raw)
From: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
High-order pcp page escaped from checking when both of DEBUG_VM and debug_pagealloc
are all disabled if it allocated again from pcp_list without going to global
free list, which should be introduced by 44042b4498.
fix:44042b4498
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e008a3d..e77f3a7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1437,7 +1437,7 @@ static bool bulkfree_pcp_prepare(struct page *page)
*/
static bool free_pcp_prepare(struct page *page, unsigned int order)
{
- if (debug_pagealloc_enabled_static())
+ if (debug_pagealloc_enabled_static() || order)
return free_pages_prepare(page, order, true, FPI_NONE);
else
return free_pages_prepare(page, order, false, FPI_NONE);
--
1.9.1
next reply other threads:[~2022-09-19 3:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-19 3:47 zhaoyang.huang [this message]
2022-09-19 5:37 ` Zhaoyang Huang
2022-09-19 10:42 ` Mel Gorman
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