From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f50.google.com (mail-pb0-f50.google.com [209.85.160.50]) by kanga.kvack.org (Postfix) with ESMTP id 947206B0194 for ; Wed, 11 Jun 2014 23:17:54 -0400 (EDT) Received: by mail-pb0-f50.google.com with SMTP id rp16so505665pbb.9 for ; Wed, 11 Jun 2014 20:17:54 -0700 (PDT) Received: from lgeamrelo01.lge.com (lgeamrelo01.lge.com. [156.147.1.125]) by mx.google.com with ESMTP id in2si39999759pbc.229.2014.06.11.20.17.51 for ; Wed, 11 Jun 2014 20:17:52 -0700 (PDT) From: 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> 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: owner-linux-mm@kvack.org List-ID: 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 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org