From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754364AbeCGMrh (ORCPT ); Wed, 7 Mar 2018 07:47:37 -0500 Received: from mail-wr0-f195.google.com ([209.85.128.195]:46651 "EHLO mail-wr0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751067AbeCGMr3 (ORCPT ); Wed, 7 Mar 2018 07:47:29 -0500 X-Google-Smtp-Source: AG47ELt2V/8qrJDFCMfhuoO6kPxjU+SfCothAmEjiXy4FVMKEOmodDyXyGnMnno/uiBi2//PYuIHQg== From: Tvrtko Ursulin X-Google-Original-From: Tvrtko Ursulin To: linux-kernel@vger.kernel.org Cc: Tvrtko Ursulin , Bart Van Assche , Hannes Reinecke , Johannes Thumshirn , Jens Axboe Subject: [PATCH 2/6] lib/scatterlist: Skip requesting zeroed allocations in sgl_alloc_order Date: Wed, 7 Mar 2018 12:47:08 +0000 Message-Id: <20180307124712.14963-3-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180307124712.14963-1-tvrtko.ursulin@linux.intel.com> References: <20180307124712.14963-1-tvrtko.ursulin@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tvrtko Ursulin sg_init_table will clear the allocated block so requesting zeroed memory from the allocator is redundant. Signed-off-by: Tvrtko Ursulin Cc: Bart Van Assche Cc: Hannes Reinecke Cc: Johannes Thumshirn Cc: Jens Axboe --- lib/scatterlist.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/lib/scatterlist.c b/lib/scatterlist.c index d61c025e38b4..9884be50a2c0 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -511,8 +511,7 @@ struct scatterlist *sgl_alloc_order(unsigned long length, unsigned int order, nent++; } - sgl = kmalloc_array(nent, sizeof(struct scatterlist), - (gfp & ~GFP_DMA) | __GFP_ZERO); + sgl = kmalloc_array(nent, sizeof(struct scatterlist), (gfp & ~GFP_DMA)); if (!sgl) return NULL; -- 2.14.1