linux-kernel - [PATCH 1/3] zswap: Delete an error message for a failed memory allocation in zswap_pool

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Date:   Sun, 21 May 2017 10:25:03 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-mm@...ck.org, Dan Streetman <ddstreet@...e.org>,
        Seth Jennings <sjenning@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH 1/3] zswap: Delete an error message for a failed memory
 allocation in zswap_pool_create()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 20 May 2017 22:33:21 +0200

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 mm/zswap.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/zswap.c b/mm/zswap.c
index eedc27894b10..18d8e87119a6 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -518,7 +518,5 @@ static struct zswap_pool *zswap_pool_create(char *type, char *compressor)
-	if (!pool) {
-		pr_err("pool alloc failed\n");
+	if (!pool)
 		return NULL;
-	}
 
 	/* unique name for each pool specifically required by zsmalloc */
 	snprintf(name, 38, "zswap%x", atomic_inc_return(&zswap_pools_count));
-- 
2.13.0