From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6A69C352A4 for ; Sun, 9 Feb 2020 23:39:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A3FEC207FF for ; Sun, 9 Feb 2020 23:39:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3FEC207FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 28C206B0074; Sun, 9 Feb 2020 18:39:22 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 214876B0075; Sun, 9 Feb 2020 18:39:22 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 103866B0078; Sun, 9 Feb 2020 18:39:22 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0168.hostedemail.com [216.40.44.168]) by kanga.kvack.org (Postfix) with ESMTP id E89896B0074 for ; Sun, 9 Feb 2020 18:39:21 -0500 (EST) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 90608180AD801 for ; Sun, 9 Feb 2020 23:39:21 +0000 (UTC) X-FDA: 76472207322.09.rifle83_51a555e45b221 X-HE-Tag: rifle83_51a555e45b221 X-Filterd-Recvd-Size: 2817 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by imf37.hostedemail.com (Postfix) with ESMTP for ; Sun, 9 Feb 2020 23:39:20 +0000 (UTC) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Feb 2020 15:39:19 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,423,1574150400"; d="scan'208";a="405416746" Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by orsmga005.jf.intel.com with ESMTP; 09 Feb 2020 15:39:17 -0800 Date: Mon, 10 Feb 2020 07:39:35 +0800 From: Wei Yang To: Baoquan He Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, dan.j.williams@intel.com, richardw.yang@linux.intel.com, david@redhat.com Subject: Re: [PATCH 4/7] mm/sparse.c: Use __get_free_pages() instead in populate_section_memmap() Message-ID: <20200209233935.GB8705@richard> Reply-To: Wei Yang References: <20200209104826.3385-1-bhe@redhat.com> <20200209104826.3385-5-bhe@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200209104826.3385-5-bhe@redhat.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, Feb 09, 2020 at 06:48:23PM +0800, Baoquan He wrote: >This removes the unnecessary goto, and simplify codes. > >Signed-off-by: Baoquan He Reasonable. Reviewed-by: Wei Yang >--- > mm/sparse.c | 16 ++++++---------- > 1 file changed, 6 insertions(+), 10 deletions(-) > >diff --git a/mm/sparse.c b/mm/sparse.c >index cf55d272d0a9..36e6565ec67e 100644 >--- a/mm/sparse.c >+++ b/mm/sparse.c >@@ -751,23 +751,19 @@ static void free_map_bootmem(struct page *memmap) > struct page * __meminit populate_section_memmap(unsigned long pfn, > unsigned long nr_pages, int nid, struct vmem_altmap *altmap) > { >- struct page *page, *ret; >+ struct page *ret; > unsigned long memmap_size = sizeof(struct page) * PAGES_PER_SECTION; > >- page = alloc_pages(GFP_KERNEL|__GFP_NOWARN, get_order(memmap_size)); >- if (page) >- goto got_map_page; >+ ret = (void*)__get_free_pages(GFP_KERNEL|__GFP_NOWARN, >+ get_order(memmap_size)); >+ if (ret) >+ return ret; > > ret = vmalloc(memmap_size); > if (ret) >- goto got_map_ptr; >+ return ret; > > return NULL; >-got_map_page: >- ret = (struct page *)pfn_to_kaddr(page_to_pfn(page)); >-got_map_ptr: >- >- return ret; > } > > static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages, >-- >2.17.2 -- Wei Yang Help you, Help me