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Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <20230522205744.2825689-1-dhowells@redhat.com> <168487791137.449781.3170440352656135902.b4-ty@kernel.dk> To: Christoph Hellwig Cc: dhowells@redhat.com, Jens Axboe , Al Viro , Matthew Wilcox , Jan Kara , Jeff Layton , David Hildenbrand , Logan Gunthorpe , Hillf Danton , Christian Brauner , Linus Torvalds , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jason Gunthorpe Subject: Re: [PATCH v21 0/6] block: Use page pinning MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <3206938.1684913738.1@warthog.procyon.org.uk> Date: Wed, 24 May 2023 08:35:39 +0100 Message-ID: <3206939.1684913739@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Rspamd-Queue-Id: EAA96180006 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: qb5nqrpc5a5ig1xm5pd4umd4a319ahoz X-HE-Tag: 1684913748-866848 X-HE-Meta: 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 HDkxRqYK pIjuiUiQgYPTdxwgtxZSCHeCgGoOBEEtax6nJnqfAcJcRYMlLdqi1EemZPRIsuxBAZQkIBApz4stgZMHZkJEwPBkX7A/FBSvTc7wawpPGWbFVICRT77ihRmAaO7OOYU8MxmeCwN4HxXAkDQsbEXaiBKvXOlnYnRZ16wXlssPJZMB1hHPyw1aS9dkD7GIf15XZV57BAaxD73xrcXmaFaiQ/dbCUQ== 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: Christoph Hellwig wrote: > > Applied, thanks! > > This ended up on the for-6.5/block branch, but I think it needs to be > on the splice one, as that is pre-requisite unless I'm missing > something. Indeed. As I noted in the cover note: This requires the splice-read patchset to have been applied first, otherwise reversion of the ITER_PAGE iterator can race with truncate and return pages to the allocator whilst they're still undergoing DMA[2]. David