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Wong" , Hugh Dickins , Andrew Morton , linux-xfs@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 07/20] shmem: document how to "persist" data when using shmem_*file_setup Message-ID: References: <20240129143502.189370-1-hch@lst.de> <20240129143502.189370-8-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240129143502.189370-8-hch@lst.de> X-Rspamd-Queue-Id: AF8EB4000E X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: 6xoxj91rpoyxniot3n5unu3pqzo7cac4 X-HE-Tag: 1706594778-414975 X-HE-Meta: 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 +wiP9fU8 7o0Tk1rdGn3ZCuYNngY23VG6PNcLhyFpK2oLesHuWJjoQoqlcalTWL9QCJxNTvpsGO/trp0isQdO/lywmLCvSCpBVPfwIWLjPQ31cheaUCqaKvf2hJAJkzZkQEdFOyU6s2rYhWFuu35Aco1rDdGbaFMPSp0kVWIQcpMEdzO+OPpEnBG6HL8Iuxa7jhE85tPbR9TBnz04if6U4/QAKSPbSYMp2Hyq6MfVsnZRDYrkmW5tbyQosFFIGkvUX4pkkcTS1jMM7Bk0V68Xg8M6PpyElG1km/j7+cYEWDlgee5t3PXTLSOU= 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 Mon, Jan 29, 2024 at 03:34:49PM +0100, Christoph Hellwig wrote: > Add a blurb that simply dirtying the folio will persist data for in-kernel > shmem files. This is what most of the callers already do. > > Signed-off-by: Christoph Hellwig > Reviewed-by: Darrick J. Wong Reviewed-by: Matthew Wilcox (Oracle) I noticed today that drivers/gpu/drm/i915/gem/i915_gem_shmem.c is going to a lot of effort to call write_begin and write_end. I'll take that out as part of the shmem conversion to buffered_write_ops.