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d=hostedemail.com; t=1719920747; a=rsa-sha256; cv=none; b=R0G8XBl9gVVTwV0UmpRsH3wTnadT7D36dkzNW/f0bc2Yyl6U3f8p/1t2k+1DPxWK4sdDxI d11XL010wtavb9LPO8GXbaqphLsqkJWs1RyazmqelWtdwuTDwIQt2dJ1ES4O2jVmna6tpD gKB5m7JA1Renpyh+O7hHj0nzB76rETc= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf19.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de Received: by verein.lst.de (Postfix, from userid 2407) id 385AC68AA6; Tue, 2 Jul 2024 13:46:02 +0200 (CEST) Date: Tue, 2 Jul 2024 13:46:01 +0200 From: Christoph Hellwig To: David Hildenbrand Cc: Alistair Popple , dan.j.williams@intel.com, vishal.l.verma@intel.com, dave.jiang@intel.com, logang@deltatee.com, bhelgaas@google.com, jack@suse.cz, jgg@ziepe.ca, catalin.marinas@arm.com, will@kernel.org, mpe@ellerman.id.au, npiggin@gmail.com, dave.hansen@linux.intel.com, ira.weiny@intel.com, willy@infradead.org, djwong@kernel.org, tytso@mit.edu, linmiaohe@huawei.com, peterx@redhat.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, jhubbard@nvidia.com, hch@lst.de, david@fromorbit.com Subject: Re: [PATCH 06/13] mm/memory: Add dax_insert_pfn Message-ID: <20240702114601.GA15426@lst.de> References: <50013c1ee52b5bb1213571bff66780568455f54c.1719386613.git-series.apopple@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-Rspamd-Queue-Id: F39061A0010 X-Stat-Signature: hesac7a3ad1cphm1qmqee7rxp8o86xxr X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1719920768-935095 X-HE-Meta: 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 1Ni2GU/f Tf254ZToNXH/i5TfFBIW+jBCe1ViiimDa8YRUeKJfqB4yF6oEi6UhoRUm2Z0Y8YCOh25gLww8SzatQmFpJ+3LC+fq/IWtu0/KVacRjldUgynH1udx3jWt/tFviA== 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: List-Subscribe: List-Unsubscribe: On Tue, Jul 02, 2024 at 09:18:31AM +0200, David Hildenbrand wrote: > We have this comparably nasty vmf_insert_mixed() that FS dax abused to > insert into !VM_MIXED VMAs. Is that abuse now stopping and are there maybe > ways to get rid of vmf_insert_mixed()? Unfortunately it is also used by a few drm drivers and not just DAX.