From nobody Thu Sep 11 15:24:54 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8F53C04E69 for ; Thu, 3 Aug 2023 17:27:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234628AbjHCR1J (ORCPT ); Thu, 3 Aug 2023 13:27:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42374 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234715AbjHCR1C (ORCPT ); Thu, 3 Aug 2023 13:27:02 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18E3930C0 for ; Thu, 3 Aug 2023 10:27:01 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-583a89cccf6so13066897b3.1 for ; Thu, 03 Aug 2023 10:27:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1691083620; x=1691688420; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=EHpUmzrQnDN6BdHRPVO0KcfDXP0OZ5FbBAepEsSX9Ig=; b=qxsXQyRbVAeRELuUUtKrCwywC6QQTi8GHNRwTQUgqwaMaE06n28e21MqPJCBZOSeOT Qdy3T1xm+nWsar3PElAyHH4XRbnbh/juQv6pT24VIx/hmG68SRWkDtgsWgv0Vbw+Xq4b +9kLmoit9sN1/gZfKklOc8XhcuoYMFvLaSeXIo/wdsXcRNSNRVLSqWMC8fCCM8aUcWcB aDSUJ5MX9993h31MPorj7ATaoVZTKC0TIpSNDyVZs/SHr6qPtsnYQt8mS3zlcdzRn4PP n6WROk+TAqngChxc1yRkKMEU0NvNbIWVZIRUByrfXNiHMt2U5V4plrf6i9OLozdZrkBK n96Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691083620; x=1691688420; 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=EHpUmzrQnDN6BdHRPVO0KcfDXP0OZ5FbBAepEsSX9Ig=; b=XpfoX7FGoxZd4p2HaEp85hljlVpcV50iZ2+wHVKjis43nCw1Qc7/1800/IyvkjDpH1 +buNNp5dmDhAhXTIHaNgtd+f3ogs44I6242VAF7tD7QTTLxFl8mQMnyyNB1BPxb2Wcme FbcR+d/LgUtNGqXrWKDCcqmFBfkxX4ThkECmTR1phik96XyCdN5IQyDFa7Hm3UfAB2Ql ft5M8uzfKaU438JTrmTPcCo8LQpcw2hnmuOOhoel+FG325nLY4RueaoXfkg2PkvoTwuS mUwrYH2UyGho/r4iz7IlXIvmpcqzmiXaYyuvC5SIp38X0upyXVTxwHaGXP5Fb/87diX2 T+6g== X-Gm-Message-State: ABy/qLYdIAMv+wX1YL5X5U2webMi0ZGdmWom8Mhxc9Lvxbft7/kRxdjq EGE2aFngq4Lz2+B4Pj+oggtRyGYeUy0= X-Google-Smtp-Source: APBJJlFJcCahjdAYX9Zx+DEl8b9H6rEwuNU2P9eGDfvhDJtLw9lJ/qnx3rNt/z46v/MM98tnx4xoFSOUp3s= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:3dec:ef9e:7bf4:7a6]) (user=surenb job=sendgmr) by 2002:a81:c509:0:b0:573:87b9:7ee9 with SMTP id k9-20020a81c509000000b0057387b97ee9mr191557ywi.4.1691083620320; Thu, 03 Aug 2023 10:27:00 -0700 (PDT) Date: Thu, 3 Aug 2023 10:26:47 -0700 In-Reply-To: <20230803172652.2849981-1-surenb@google.com> Mime-Version: 1.0 References: <20230803172652.2849981-1-surenb@google.com> X-Mailer: git-send-email 2.41.0.585.gd2178a4bd4-goog Message-ID: <20230803172652.2849981-3-surenb@google.com> Subject: [PATCH v3 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 , "Liam R . Howlett" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When CONFIG_PER_VMA_LOCK=3Dn, vma_assert_write_locked() should be equivalent to mmap_assert_write_locked(). Suggested-by: Jann Horn Signed-off-by: Suren Baghdasaryan Reviewed-by: Liam R. Howlett --- 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) {} =20 --=20 2.41.0.585.gd2178a4bd4-goog