From patchwork Thu Jun 20 20:53:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 11008105 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2B5DF76 for ; Thu, 20 Jun 2019 20:54:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1F42228795 for ; Thu, 20 Jun 2019 20:54:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1394828841; Thu, 20 Jun 2019 20:54:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B233528795 for ; Thu, 20 Jun 2019 20:54:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727207AbfFTUyf (ORCPT ); Thu, 20 Jun 2019 16:54:35 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:50822 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726130AbfFTUyI (ORCPT ); Thu, 20 Jun 2019 16:54:08 -0400 Received: from pps.filterd (m0044008.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5KKs1t3030343 for ; Thu, 20 Jun 2019 13:54:07 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=n2snFM7QmmPTPpShlBhEnsGKC2i2/uKCmCMTseCu52k=; b=MO6t/uuqWiOOomNBwU97YOg+TXttbjxehR5XUim4OqdKWGOalMKxrKcMTqcpsoFCSNTE v2Tyx+5GHTxXTSPAKkK7icdV+5yVIe0Ew+tP8foHoFHqdgSuCNXYJKLQy9typVFfpkod AIK/nAgzi7COfwqaGzTulaxsSRSMbugt65w= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2t8f1n0km2-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 20 Jun 2019 13:54:07 -0700 Received: from mx-out.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Thu, 20 Jun 2019 13:54:05 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 06C3D62E2A35; Thu, 20 Jun 2019 13:54:04 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig006.ftw2.facebook.com To: , , CC: , , , , , Song Liu Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v5 4/6] khugepaged: rename collapse_shmem() and khugepaged_scan_shmem() Date: Thu, 20 Jun 2019 13:53:46 -0700 Message-ID: <20190620205348.3980213-5-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190620205348.3980213-1-songliubraving@fb.com> References: <20190620205348.3980213-1-songliubraving@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-20_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=570 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906200150 X-FB-Internal: deliver Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Next patch will add khugepaged support of non-shmem files. This patch renames these two functions to reflect the new functionality: collapse_shmem() => collapse_file() khugepaged_scan_shmem() => khugepaged_scan_file() Acked-by: Rik van Riel Signed-off-by: Song Liu --- mm/khugepaged.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 0f7419938008..dde8e45552b3 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1287,7 +1287,7 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) } /** - * collapse_shmem - collapse small tmpfs/shmem pages into huge one. + * collapse_file - collapse small tmpfs/shmem pages into huge one. * * Basic scheme is simple, details are more complex: * - allocate and lock a new huge page; @@ -1304,10 +1304,11 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) * + restore gaps in the page cache; * + unlock and free huge page; */ -static void collapse_shmem(struct mm_struct *mm, +static void collapse_file(struct vm_area_struct *vma, struct address_space *mapping, pgoff_t start, struct page **hpage, int node) { + struct mm_struct *mm = vma->vm_mm; gfp_t gfp; struct page *new_page; struct mem_cgroup *memcg; @@ -1563,7 +1564,7 @@ static void collapse_shmem(struct mm_struct *mm, /* TODO: tracepoints */ } -static void khugepaged_scan_shmem(struct mm_struct *mm, +static void khugepaged_scan_file(struct vm_area_struct *vma, struct address_space *mapping, pgoff_t start, struct page **hpage) { @@ -1631,14 +1632,14 @@ static void khugepaged_scan_shmem(struct mm_struct *mm, result = SCAN_EXCEED_NONE_PTE; } else { node = khugepaged_find_target_node(); - collapse_shmem(mm, mapping, start, hpage, node); + collapse_file(vma, mapping, start, hpage, node); } } /* TODO: tracepoints */ } #else -static void khugepaged_scan_shmem(struct mm_struct *mm, +static void khugepaged_scan_file(struct vm_area_struct *vma, struct address_space *mapping, pgoff_t start, struct page **hpage) { @@ -1722,7 +1723,7 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, file = get_file(vma->vm_file); up_read(&mm->mmap_sem); ret = 1; - khugepaged_scan_shmem(mm, file->f_mapping, + khugepaged_scan_file(vma, file->f_mapping, pgoff, hpage); fput(file); } else {