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Tue, 12 Nov 2019 11:09:59 -0600 From: "Weiny, Ira" To: Christoph Hellwig CC: Alexander Viro , Andrew Morton , Chris Mason , Josef Bacik , David Sterba , Jaegeuk Kim , Chao Yu , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , Trond Myklebust , Anna Schumaker , "linux-btrfs@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-f2fs-devel@lists.sourceforge.net" , "linux-nfs@vger.kernel.org" , "linux-mm@kvack.org" , "Dave Chinner" , Jan Kara Subject: RE: [PATCH 2/2] fs: Move swap_[de]activate to file_operations Thread-Topic: [PATCH 2/2] fs: Move swap_[de]activate to file_operations Thread-Index: AQHVmPEJn03RPDacYEWb7WKbk7sMtKeHfu+AgABGKCA= Date: Tue, 12 Nov 2019 17:09:58 +0000 Message-ID: <2807E5FD2F6FDA4886F6618EAC48510E92BB4EFE@CRSMSX101.amr.corp.intel.com> References: <20191112003452.4756-1-ira.weiny@intel.com> <20191112003452.4756-3-ira.weiny@intel.com> <20191112065507.GA15915@infradead.org> In-Reply-To: <20191112065507.GA15915@infradead.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiYTM5NDE5MDYtMjAzNy00Nzc4LWEzYmEtNmZkNWU4YWQ2ZmM4IiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoiUEUrZUdXeGJIYm5OR3QzM0J0eTNySG1wRXZDTmw3OENZdDlmYkwzY1RoaFlMS1wvZTBGdWFhZTI3aDVoNG1icnMifQ== x-ctpclassification: CTP_NT dlp-product: dlpe-windows dlp-version: 11.2.0.6 dlp-reaction: no-action x-originating-ip: [172.18.205.10] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 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: >=20 > On Mon, Nov 11, 2019 at 04:34:52PM -0800, ira.weiny@intel.com wrote: > > From: Ira Weiny > > > > swap_activate() and swap_deactivate() have nothing to do with address > > spaces. We want to eventually make the address space operations > > dynamic to switch inode flags on the fly. So to simplify this code as > > well as properly track these operations we move these functions to the > > file_operations vector. >=20 > What is the point? If we switch aops for DAX vs not we might as well swi= tch > file operations as well, as they pretty much are entirely different. Obviously I was not clear enough. The point is to have 2 fewer a_ops funct= ions to worry about synchronizing. I see Jan already replied. So I'll leave it at that. Ira