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[142.162.115.133]) by smtp.gmail.com with ESMTPSA id l29sm5928848qtu.35.2021.03.01.16.30.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Mar 2021 16:30:36 -0800 (PST) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1lGsvr-003KNN-RN; Mon, 01 Mar 2021 20:30:35 -0400 Date: Mon, 1 Mar 2021 20:30:35 -0400 From: Jason Gunthorpe To: Andrew Morton Cc: Peter Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Gal Pressman , Matthew Wilcox , Wei Zhang , Mike Kravetz , Mike Rapoport , Christoph Hellwig , Linus Torvalds , David Gibson , Jann Horn , Kirill Tkhai , Kirill Shutemov , Miaohe Lin , Andrea Arcangeli , Jan Kara Subject: Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups Message-ID: <20210302003035.GE444867@ziepe.ca> References: <20210217233547.93892-1-peterx@redhat.com> <20210301141151.GA397383@xz-x1> <20210301162846.c1f684a5662d37bbec3f1892@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210301162846.c1f684a5662d37bbec3f1892@linux-foundation.org> X-Stat-Signature: 7ipn9eu47asig87daosa9jsgaaoruhmj X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 60750A04EDA4 Received-SPF: none (ziepe.ca>: No applicable sender policy available) receiver=imf23; identity=mailfrom; envelope-from=""; helo=mail-qt1-f172.google.com; client-ip=209.85.160.172 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614645037-193875 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: On Mon, Mar 01, 2021 at 04:28:46PM -0800, Andrew Morton wrote: > On Mon, 1 Mar 2021 09:11:51 -0500 Peter Xu wrote: > > > On Wed, Feb 17, 2021 at 06:35:42PM -0500, Peter Xu wrote: > > > v5: > > > - patch 4: change "int cow" into "bool cow" > > > - collect r-bs for Jason > > > > Andrew, > > > > I just noticed 5.12-rc1 has released; is this series still possible to make it > > for 5.12, or needs to wait for 5.13? > > > > It has taken a while to settle down. What is the case for > fast-tracking it into 5.12? IIRC hugetlb users and fork and DMA will get the unexpected VA corruption that triggered all this work. Jason