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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 CFAB9C18E5B for ; Mon, 16 Mar 2020 04:36:32 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8FF1920719 for ; Mon, 16 Mar 2020 04:36:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GgMs7KE+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8FF1920719 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3B6D46B0005; Mon, 16 Mar 2020 00:36:32 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 38D146B0007; Mon, 16 Mar 2020 00:36:32 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 27C876B0008; Mon, 16 Mar 2020 00:36:32 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0130.hostedemail.com [216.40.44.130]) by kanga.kvack.org (Postfix) with ESMTP id 0FE1D6B0005 for ; Mon, 16 Mar 2020 00:36:32 -0400 (EDT) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id EF7DE824805A for ; Mon, 16 Mar 2020 04:36:31 +0000 (UTC) X-FDA: 76599964224.09.sand12_38fe2a9b7c22a X-HE-Tag: sand12_38fe2a9b7c22a X-Filterd-Recvd-Size: 5260 Received: from mail-pl1-f194.google.com (mail-pl1-f194.google.com [209.85.214.194]) by imf29.hostedemail.com (Postfix) with ESMTP for ; Mon, 16 Mar 2020 04:36:31 +0000 (UTC) Received: by mail-pl1-f194.google.com with SMTP id t3so7391581plz.9 for ; Sun, 15 Mar 2020 21:36:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=j66a3s2vP+w20zjNn6qkww1MfEJEICNJLq9xqeevnk8=; b=GgMs7KE+x7u8c2D1GUcSwQOaBOyBlSMcZh5+Zn/Cql877d/Xa4BZnVC74rImQcQiza Pjnrm00Yp6zqwWC3w2/H1a0x2TlmcFf6UZI5ojLNAK2eP9KZZRMpTOtr5OMS+LI/DD0F Fbl+zMVmgP1Xq/QUOsChOQ09GEFcvynpnHOfFBjXpt7Ou38fRLiO6IPtSBF+3R0W2lJG KOxjEbXfq8L92hrL0DGarzOrB2FewqwrgURQDjTMF8EIo/L186+MMzbRmWVVF5ShYPT8 8r+fvm8XYIPuIHf6lrJQnrh/ODW7LBhBISWzabqdzXHnZhnvh37WMl+J1YB9lEGqYheY ox+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=j66a3s2vP+w20zjNn6qkww1MfEJEICNJLq9xqeevnk8=; b=YFAxH5izWE3FhjmT/AVodtkKWrmtmxbB58RDkwrEtXsMPkq0d5QT52gpW5oaDY98zx IarNQaQa15d9aDC2ScUc0wIN8IbEUpUFOZsyueYpIz/eZiiwoY9Rx74cIBE0vNe3oT8a Fv0Gm9bJmjqaoSMzKd3YxUiyJXcF4AAFZBGTPCLsoNI+MjPoflwPGrXkDjP2GHkA/erO HiKTnseql3vS/S9fslCCnyHKK8Zd0qpnvt9T2FoIiaAjIkYyP8KHrtrfN5OSmVBS41id rxftK11rY5G6SOsqdEKwv48Sh9zDxovGs1PgqFc2gN5r+W9bNZ5jtHvUFcEGkgeEhipO jo3Q== X-Gm-Message-State: ANhLgQ3MY1aK5aylEMtld+TvPfcDLBtxZ6VX9maY6jNu3BoZA7ILxsh3 gwRPwQ49dNy4MXd8EsPAylGTEaw= X-Google-Smtp-Source: ADFU+vvGDBK8fWBoL3X1P0FaYHUxoUZzuCudaoA1ladHgo5FilHiD0ikM2kIDkWllOEGq+RSBlKZ+Q== X-Received: by 2002:a17:902:ab95:: with SMTP id f21mr22712206plr.188.1584333390348; Sun, 15 Mar 2020 21:36:30 -0700 (PDT) Received: from mylaptop.redhat.com ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id d6sm18544296pjz.39.2020.03.15.21.36.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 15 Mar 2020 21:36:29 -0700 (PDT) From: Pingfan Liu To: linux-mm@kvack.org Cc: Pingfan Liu , Ira Weiny , Andrew Morton , Mike Rapoport , Dan Williams , Matthew Wilcox , John Hubbard , "Aneesh Kumar K.V" , Christoph Hellwig , Shuah Khan , linux-kernel@vger.kernel.org Subject: [PATCHv6 1/3] mm/gup: rename nr as nr_pinned in get_user_pages_fast() Date: Mon, 16 Mar 2020 12:34:02 +0800 Message-Id: <1584333244-10480-2-git-send-email-kernelfans@gmail.com> X-Mailer: git-send-email 2.7.5 In-Reply-To: <1584333244-10480-1-git-send-email-kernelfans@gmail.com> References: <1584333244-10480-1-git-send-email-kernelfans@gmail.com> 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: To better reflect the held state of pages and make code self-explaining, rename nr as nr_pinned. Signed-off-by: Pingfan Liu Cc: Ira Weiny Cc: Andrew Morton Cc: Mike Rapoport Cc: Dan Williams Cc: Matthew Wilcox Cc: John Hubbard Cc: "Aneesh Kumar K.V" Cc: Christoph Hellwig Cc: Shuah Khan To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org --- mm/gup.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index e8aaa40..9df77b1 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -2735,7 +2735,7 @@ static int internal_get_user_pages_fast(unsigned long start, int nr_pages, struct page **pages) { unsigned long addr, len, end; - int nr = 0, ret = 0; + int nr_pinned = 0, ret = 0; if (WARN_ON_ONCE(gup_flags & ~(FOLL_WRITE | FOLL_LONGTERM | FOLL_FORCE | FOLL_PIN | FOLL_GET))) @@ -2754,25 +2754,25 @@ static int internal_get_user_pages_fast(unsigned long start, int nr_pages, if (IS_ENABLED(CONFIG_HAVE_FAST_GUP) && gup_fast_permitted(start, end)) { local_irq_disable(); - gup_pgd_range(addr, end, gup_flags, pages, &nr); + gup_pgd_range(addr, end, gup_flags, pages, &nr_pinned); local_irq_enable(); - ret = nr; + ret = nr_pinned; } - if (nr < nr_pages) { + if (nr_pinned < nr_pages) { /* Try to get the remaining pages with get_user_pages */ - start += nr << PAGE_SHIFT; - pages += nr; + start += nr_pinned << PAGE_SHIFT; + pages += nr_pinned; - ret = __gup_longterm_unlocked(start, nr_pages - nr, + ret = __gup_longterm_unlocked(start, nr_pages - nr_pinned, gup_flags, pages); /* Have to be a bit careful with return values */ - if (nr > 0) { + if (nr_pinned > 0) { if (ret < 0) - ret = nr; + ret = nr_pinned; else - ret += nr; + ret += nr_pinned; } } -- 2.7.5