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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45EC7C636CC for ; Thu, 16 Feb 2023 05:20:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229739AbjBPFUy (ORCPT ); Thu, 16 Feb 2023 00:20:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229734AbjBPFT5 (ORCPT ); Thu, 16 Feb 2023 00:19:57 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2FFAA474D1 for ; Wed, 15 Feb 2023 21:19:01 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id q127-20020a25d985000000b009362f0368aeso883604ybg.3 for ; Wed, 15 Feb 2023 21:19:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=g+2R9wHJik/ujG7pbEIR7UB7BFuMmi7T4GQjwfs+Slo=; b=GJ5BxW0Q1u88snEvipBftLmc3+Jf1QItAPirJyrJgB8Mp9ylRIIALZlXmJQ4wNiSwP o865zgbeTpwGE0/miDmLSBWepWhJN06egqwo+YGBO2p834t1tPcrBoNtCdfrXD1jQzaN e7lrVFe77phFTZAotKwLYsW/LOb59LyIPFjYvDx4mPrMSRvD2iWSSQr/TeKwF3SManJP 7zOmcrgCnGJ5t0wPXfGvFFU5Wepw7LHd2B3wtwv+KMRgdeCQNTeRgpwm3UNl2CvWi/nE 3FOidEUJKnpNbe60Or5Um47yum4t5Cm2ARYxCb7pet6vv6oqpLv+fwdHpYVdfug+gwv9 oixA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=g+2R9wHJik/ujG7pbEIR7UB7BFuMmi7T4GQjwfs+Slo=; b=Qi3tRaGOFoNfAfZOXYc5BFe0C7UUqBaV5lquw1ZJ5toVViOcgpfIVIkTr+7eGAzQKM MiP476TRD9/Gi/YCUSfYwC5297Yn0h5OJDxPp9Uu6Sa2gAyo595Fkw6l4ZY2v9WpYUtw BzfrK1e+xzxgFiCKBufoFG82ZcyF2zKF9SS4h6ocgzSmE1I9TdB7AzqJGyKuwTus04/7 sh00bqtKsu/xqYKnQhvg2M7+LxogCzjf7wPFcyblIK0UGh1rDKwZC0ApTfxehir00NJn 5hefN49CeTJLtsRz0zpSedzMfHjoXkFxJMlJW9NAnAaieKokpa0HtDRzd0zjTgq2M3AS +rXg== X-Gm-Message-State: AO0yUKUfxcUdXcQOCiH92eidQJURQsAkgLjGfjpIVT/UmZ63e+T8j9J8 xkTTs7ZOjRQSnz5SvGXFY5aAjXV5YG8= X-Google-Smtp-Source: AK7set/8zrN2bEgVNx1m2BtSP2crHaoN6LxODGu2trr1UY0Ec3uUEJoRM+mde4AC+sE3ZWg+Wi9w81iJ8kk= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:200:f781:d5ed:1806:6ebb]) (user=surenb job=sendgmr) by 2002:a5b:144:0:b0:8ec:cc9b:7333 with SMTP id c4-20020a5b0144000000b008eccc9b7333mr463396ybp.205.1676524739514; Wed, 15 Feb 2023 21:18:59 -0800 (PST) Date: Wed, 15 Feb 2023 21:17:42 -0800 In-Reply-To: <20230216051750.3125598-1-surenb@google.com> Mime-Version: 1.0 References: <20230216051750.3125598-1-surenb@google.com> X-Mailer: git-send-email 2.39.1.581.gbfd45094c4-goog Message-ID: <20230216051750.3125598-28-surenb@google.com> Subject: [PATCH v3 27/35] mm: add FAULT_FLAG_VMA_LOCK flag From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: michel@lespinasse.org, jglisse@google.com, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, mgorman@techsingularity.net, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, peterz@infradead.org, ldufour@linux.ibm.com, paulmck@kernel.org, mingo@redhat.com, will@kernel.org, luto@kernel.org, songliubraving@fb.com, peterx@redhat.com, david@redhat.com, dhowells@redhat.com, hughd@google.com, bigeasy@linutronix.de, kent.overstreet@linux.dev, punit.agrawal@bytedance.com, lstoakes@gmail.com, peterjung1337@gmail.com, rientjes@google.com, chriscli@google.com, axelrasmussen@google.com, joelaf@google.com, minchan@google.com, rppt@kernel.org, jannh@google.com, shakeelb@google.com, tatashin@google.com, edumazet@google.com, gthelen@google.com, gurua@google.com, arjunroy@google.com, soheil@google.com, leewalsh@google.com, posk@google.com, michalechner92@googlemail.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-kernel@vger.kernel.org, kernel-team@android.com, Suren Baghdasaryan , Laurent Dufour Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a new flag to distinguish page faults handled under protection of per-vma lock. Signed-off-by: Suren Baghdasaryan Reviewed-by: Laurent Dufour --- include/linux/mm.h | 3 ++- include/linux/mm_types.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 36172bb38e6b..3c9167529417 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -478,7 +478,8 @@ static inline bool fault_flag_allow_retry_first(enum fault_flag flags) { FAULT_FLAG_USER, "USER" }, \ { FAULT_FLAG_REMOTE, "REMOTE" }, \ { FAULT_FLAG_INSTRUCTION, "INSTRUCTION" }, \ - { FAULT_FLAG_INTERRUPTIBLE, "INTERRUPTIBLE" } + { FAULT_FLAG_INTERRUPTIBLE, "INTERRUPTIBLE" }, \ + { FAULT_FLAG_VMA_LOCK, "VMA_LOCK" } /* * vm_fault is filled by the pagefault handler and passed to the vma's diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 939f4f5a1115..212e7f923a69 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -1056,6 +1056,7 @@ enum fault_flag { FAULT_FLAG_INTERRUPTIBLE = 1 << 9, FAULT_FLAG_UNSHARE = 1 << 10, FAULT_FLAG_ORIG_PTE_VALID = 1 << 11, + FAULT_FLAG_VMA_LOCK = 1 << 12, }; typedef unsigned int __bitwise zap_flags_t; -- 2.39.1