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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 7A516C433E1 for ; Tue, 9 Jun 2020 04:33:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 31700207F9 for ; Tue, 9 Jun 2020 04:33:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="kWQa1/ga" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 31700207F9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D860E8D0007; Tue, 9 Jun 2020 00:33:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D37E26B00BC; Tue, 9 Jun 2020 00:33:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C4D628D0007; Tue, 9 Jun 2020 00:33:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0229.hostedemail.com [216.40.44.229]) by kanga.kvack.org (Postfix) with ESMTP id AB6316B00BB for ; Tue, 9 Jun 2020 00:33:20 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 7EEC380519FC for ; Tue, 9 Jun 2020 04:33:20 +0000 (UTC) X-FDA: 76908404160.17.crook75_58046f726dbf Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin17.hostedemail.com (Postfix) with ESMTP id 5FEE6180B49A1 for ; Tue, 9 Jun 2020 04:33:20 +0000 (UTC) X-HE-Tag: crook75_58046f726dbf X-Filterd-Recvd-Size: 3339 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Tue, 9 Jun 2020 04:33:20 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C4E2B20820; Tue, 9 Jun 2020 04:33:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591677199; bh=11Tr+gQ91pOa0xP9sknDnqdjMX77Fkd+1BnSnjTrx9c=; h=Date:From:To:Subject:In-Reply-To:From; b=kWQa1/gatGaSFw6aM5Bdz3mIofpnJPcPobgZ11EpDcspS/8QYH50v2mLr2h9Z7cTI 25jtdA5Nc/FXDLCvBLYF1TjYt49ww2ZS/8MEreCdmdTNr4CS8XK0Um57ZbkSEl9IIg Kqe9VjIoAtttGGUDX/JIKSJiRF9vFPyx6lZsxstw= Date: Mon, 08 Jun 2020 21:33:18 -0700 From: Andrew Morton To: akpm@linux-foundation.org, daniel.m.jordan@oracle.com, dbueso@suse.de, hughd@google.com, jgg@ziepe.ca, jglisse@redhat.com, jhubbard@nvidia.com, ldufour@linux.ibm.com, Liam.Howlett@oracle.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, peterz@infradead.org, rientjes@google.com, torvalds@linux-foundation.org, vbabka@suse.cz, walken@google.com, willy@infradead.org, yinghan@google.com Subject: [patch 61/93] MMU notifier: use the new mmap locking API Message-ID: <20200609043318.CMXFHDhdr%akpm@linux-foundation.org> In-Reply-To: <20200608212922.5b7fa74ca3f4e2444441b7f9@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 5FEE6180B49A1 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 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: From: Michel Lespinasse Subject: MMU notifier: use the new mmap locking API This use is converted manually ahead of the next patch in the series, as it requires including a new header which the automated conversion would miss. Link: http://lkml.kernel.org/r/20200520052908.204642-3-walken@google.com Signed-off-by: Michel Lespinasse Reviewed-by: Daniel Jordan Reviewed-by: Davidlohr Bueso Reviewed-by: Laurent Dufour Reviewed-by: Vlastimil Babka Cc: David Rientjes Cc: Hugh Dickins Cc: Jason Gunthorpe Cc: Jerome Glisse Cc: John Hubbard Cc: Liam Howlett Cc: Matthew Wilcox Cc: Peter Zijlstra Cc: Ying Han Signed-off-by: Andrew Morton --- include/linux/mmu_notifier.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/include/linux/mmu_notifier.h~mmu-notifier-use-the-new-mmap-locking-api +++ a/include/linux/mmu_notifier.h @@ -5,6 +5,7 @@ #include #include #include +#include #include #include @@ -277,9 +278,9 @@ mmu_notifier_get(const struct mmu_notifi { struct mmu_notifier *ret; - down_write(&mm->mmap_sem); + mmap_write_lock(mm); ret = mmu_notifier_get_locked(ops, mm); - up_write(&mm->mmap_sem); + mmap_write_unlock(mm); return ret; } void mmu_notifier_put(struct mmu_notifier *subscription); _