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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] mm: remove io-mapping In-Reply-To: <20250724145313.65920-1-lorenzo.stoakes@oracle.com> References: <20250724145313.65920-1-lorenzo.stoakes@oracle.com> Date: Thu, 24 Jul 2025 12:53:00 -0600 Message-ID: <87y0sd8lpv.fsf@trenco.lwn.net> MIME-Version: 1.0 Content-Type: text/plain X-Stat-Signature: syncjcfxiqbjpquintj1mbs3gkn39ujt X-Rspam-User: X-Rspamd-Queue-Id: EBAC0C0003 X-Rspamd-Server: rspam02 X-HE-Tag: 1753383182-375672 X-HE-Meta: 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 bNyQY1De hqv+z1GegWxIJ0WlQzqUJsuClj4ZX83SeWFRVRYN2UpC/zmW53mx5wv+GsnVAelt2LQs/8tjmMJ91z8OP7/e2b1tcOR0AGNdBlVC5+5WscwAFqa2JOOeS8dcwL5BxTwFNKcv8tJvG9GsQWXrEq8aTs/KJxznk8HLU7tRIcCdEd3P1LAkm1DW3ENn1AjdPfdGgxr63XV0XnScKGlO67L4eb8CHKSyZIk766Wk/og5vqBoASntwwnZ6x1alINGvzKqHj3f7YFLTKIvpnXxSb2G3JbXM5XWbgTmozLTHoSXtDvPLOVsHuheuiq/jsQ== 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: Lorenzo Stoakes writes: > This is dead code, which was used from commit b739f125e4eb ("i915: use > io_mapping_map_user") but reverted a month later by commit > 0e4fe0c9f2f9 ("Revert "i915: use io_mapping_map_user"") back in 2021. > > Since then nobody has used it, so remove it. > > Signed-off-by: Lorenzo Stoakes > --- > include/linux/io-mapping.h | 231 ------------------------------------- > mm/Kconfig | 4 - > mm/Makefile | 1 - > mm/io-mapping.c | 30 ----- > 4 files changed, 266 deletions(-) > delete mode 100644 include/linux/io-mapping.h > delete mode 100644 mm/io-mapping.c [...] > -/* > - * The io_mapping mechanism provides an abstraction for mapping > - * individual pages from an io device to the CPU in an efficient fashion. > - * > - * See Documentation/driver-api/io-mapping.rst > - */ ^ | You'll want to get rid of that file --+ too jon