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[2620:137:e000::1:20]) by mx.google.com with ESMTP id q14-20020a17090a68ce00b002465d98f18csi9263496pjj.170.2023.07.31.11.02.28; Mon, 31 Jul 2023 11:02:41 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20221208 header.b=GXelEXrb; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233781AbjGaRPn (ORCPT + 99 others); Mon, 31 Jul 2023 13:15:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40314 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232372AbjGaRPL (ORCPT ); Mon, 31 Jul 2023 13:15:11 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A4A411C for ; Mon, 31 Jul 2023 10:12:42 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-d061f324d64so4950095276.1 for ; Mon, 31 Jul 2023 10:12:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690823562; x=1691428362; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=9nr+kbatQ6YMh4Ju6KIXOvG29nOfDMrirC5hgMlL3cU=; b=GXelEXrbYIY2IAX+kiYu0x1tkCdi2SyGtSF/9w53Zm3gPRECLbctG/dBvEhZfym31B ZpNGuvTs3RdmkliU7juePlylZr5pnrjsO4FCwqrfsr6YZw+CfZKmgNsroN9WWEkA9+ck VJdhxNNh/Cu46QjjSL9nAJzM84Yb17nR6+dWlfcQS/FVxSuAY184c48pG3oyTsWv//zV pwBrsYEyhVF3UcXFqaT0GQRjqCuBIJhqhqjimJS9XP+GadbKmGH7LM8IjHhW/7STICdG EJDRSQ3ltPFB9ycjQw7aPjUMjYM8r7OK4dOG6LXF0kGtaXGnCriJR99uz1fZ6+M5MjcR M39g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690823562; x=1691428362; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=9nr+kbatQ6YMh4Ju6KIXOvG29nOfDMrirC5hgMlL3cU=; b=fsq/fHOnG4+uTMOe5F6Eqbj5J62gEdIXQtAjemYMF7g8twSlkXP+wxFOzdlwCBl46E O7Lb1oo9scOqxzW+5+Q1m04qFqLjrXOJOCIUa6KOai4wwttGEVNFW+ySo+YCZNnbEem+ 6OyqBbeOL0mvskOPfd3Ws+VOWFdU4PB+a9DXA36AdT3rKoWBG5YNQfVeptER5WxZJt1G chhaVQ2q7RAKSvZk7DjUH6Yw2WnoNa6cws1JFJcWO6m2zT53HJxkPWTEXKOQeq6yXroL 1JBncjLUS2zKzF8WXl4tf4sgHdE4w4LJiwzyW/+reU0d4/pqE4YCVDy3n+LZD4FWj4RC Ivfw== X-Gm-Message-State: ABy/qLbqrVZ359/Ch0FcoGKED5Je9Bwm2HXU1KMs37zTXV+HY37PpQMY goqqcpUd9CmzniZ/dc6bH3cU6o3hABw= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:d4d3:7e41:cb80:21ea]) (user=surenb job=sendgmr) by 2002:a25:d808:0:b0:d04:faa6:e62b with SMTP id p8-20020a25d808000000b00d04faa6e62bmr57379ybg.6.1690823561762; Mon, 31 Jul 2023 10:12:41 -0700 (PDT) Date: Mon, 31 Jul 2023 10:12:28 -0700 In-Reply-To: <20230731171233.1098105-1-surenb@google.com> Mime-Version: 1.0 References: <20230731171233.1098105-1-surenb@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230731171233.1098105-3-surenb@google.com> Subject: [PATCH 2/6] mm: for !CONFIG_PER_VMA_LOCK equate write lock assertion for vma and mmap From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: torvalds@linux-foundation.org, jannh@google.com, willy@infradead.org, liam.howlett@oracle.com, david@redhat.com, peterx@redhat.com, ldufour@linux.ibm.com, vbabka@suse.cz, michel@lespinasse.org, jglisse@google.com, mhocko@suse.com, hannes@cmpxchg.org, dave@stgolabs.net, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org, Suren Baghdasaryan X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772960152695257305 X-GMAIL-MSGID: 1772960152695257305 When CONFIG_PER_VMA_LOCK=n, vma_assert_write_locked() should be equivalent to mmap_assert_write_locked(). Suggested-by: Jann Horn Signed-off-by: Suren Baghdasaryan --- include/linux/mm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 406ab9ea818f..262b5f44101d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -750,7 +750,8 @@ static inline void vma_end_read(struct vm_area_struct *vma) {} static inline void vma_start_write(struct vm_area_struct *vma) {} static inline bool vma_try_start_write(struct vm_area_struct *vma) { return true; } -static inline void vma_assert_write_locked(struct vm_area_struct *vma) {} +static inline void vma_assert_write_locked(struct vm_area_struct *vma) + { mmap_assert_write_locked(vma->vm_mm); } static inline void vma_mark_detached(struct vm_area_struct *vma, bool detached) {}