Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756003AbaFLDUF (ORCPT ); Wed, 11 Jun 2014 23:20:05 -0400 Received: from lgeamrelo01.lge.com ([156.147.1.125]:55606 "EHLO lgeamrelo01.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755463AbaFLDRw (ORCPT ); Wed, 11 Jun 2014 23:17:52 -0400 X-Original-SENDERIP: 10.177.220.145 X-Original-MAILFROM: iamjoonsoo.kim@lge.com From: Joonsoo Kim To: Andrew Morton , "Aneesh Kumar K.V" , Marek Szyprowski , Michal Nazarewicz Cc: Minchan Kim , Russell King - ARM Linux , Greg Kroah-Hartman , Paolo Bonzini , Gleb Natapov , Alexander Graf , Benjamin Herrenschmidt , Paul Mackerras , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Joonsoo Kim Subject: [PATCH v2 08/10] mm, cma: clean-up cma allocation error path Date: Thu, 12 Jun 2014 12:21:45 +0900 Message-Id: <1402543307-29800-9-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1402543307-29800-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1402543307-29800-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We can remove one call sites for clear_cma_bitmap() if we first call it before checking error number. Signed-off-by: Joonsoo Kim diff --git a/mm/cma.c b/mm/cma.c index 1e1b017..01a0713 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -282,11 +282,12 @@ struct page *cma_alloc(struct cma *cma, int count, unsigned int align) if (ret == 0) { page = pfn_to_page(pfn); break; - } else if (ret != -EBUSY) { - clear_cma_bitmap(cma, pfn, count); - break; } + clear_cma_bitmap(cma, pfn, count); + if (ret != -EBUSY) + break; + pr_debug("%s(): memory range at %p is busy, retrying\n", __func__, pfn_to_page(pfn)); /* try again with a bit different memory target */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/