linux-kernel - [PATCH v2 16/16] mm/huge_memory: use helper macro IS_ERR_OR_NULL in split_huge_pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220628132835.8925-17-linmiaohe@huawei.com>
Date:   Tue, 28 Jun 2022 21:28:35 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <shy828301@...il.com>, <willy@...radead.org>, <zokeefe@...gle.com>,
        <songmuchun@...edance.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH v2 16/16] mm/huge_memory: use helper macro IS_ERR_OR_NULL in split_huge_pages_pid

Use helper macro IS_ERR_OR_NULL to check the validity of page to simplify
the code. Minor readability improvement.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/huge_memory.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 1d32349a95f4..b406fe08b2c9 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3057,9 +3057,7 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
 		/* FOLL_DUMP to ignore special (like zero) pages */
 		page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP | FOLL_LRU);
 
-		if (IS_ERR(page))
-			continue;
-		if (!page)
+		if (IS_ERR_OR_NULL(page))
 			continue;
 
 		if (!is_transparent_hugepage(page))
-- 
2.23.0