From: <miles.chen@mediatek.com>
To: Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
<wsd_upstream@mediatek.com>, <linux-mediatek@lists.infradead.org>,
Miles Chen <miles.chen@mediatek.com>
Subject: [PATCH] mm/slob: remove an unnecessary check for __GFP_ZERO
Date: Thu, 5 Oct 2017 19:32:21 +0800 [thread overview]
Message-ID: <1507203141-11959-1-git-send-email-miles.chen@mediatek.com> (raw)
From: Miles Chen <miles.chen@mediatek.com>
Current flow guarantees a valid pointer when handling
the __GFP_ZERO case. So remove the unnecessary NULL pointer
check.
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
---
mm/slob.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/slob.c b/mm/slob.c
index a8bd6fa..a72649c 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -329,7 +329,7 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node)
BUG_ON(!b);
spin_unlock_irqrestore(&slob_lock, flags);
}
- if (unlikely((gfp & __GFP_ZERO) && b))
+ if (unlikely(gfp & __GFP_ZERO))
memset(b, 0, size);
return b;
}
--
1.9.1
reply other threads:[~2017-10-05 11:32 UTC|newest]
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