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{ "id": 2202521, "url": "http://patchwork.ozlabs.org/api/covers/2202521/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20260227200848.114019-1-david@kernel.org/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260227200848.114019-1-david@kernel.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260227200848.114019-1-david@kernel.org/", "date": "2026-02-27T20:08:31", "name": "[v1,00/16] mm: cleanups around unmapping / zapping", "submitter": { "id": 92023, "url": "http://patchwork.ozlabs.org/api/people/92023/?format=api", "name": "David Hildenbrand (Arm)", "email": "david@kernel.org" }, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20260227200848.114019-1-david@kernel.org/mbox/", "series": [ { "id": 493807, "url": "http://patchwork.ozlabs.org/api/series/493807/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=493807", "date": "2026-02-27T20:08:31", "name": "mm: cleanups around unmapping / zapping", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/493807/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2202521/comments/", "headers": { "Return-Path": "\n <linuxppc-dev+bounces-17408-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=P+U9FbqK;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1772222948;\n\tbh=uHYxem2rcFuwlV7scbCWwSyUtQMuMwhNJjysCrEHJOo=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=P+U9FbqKF3CgiBsEPqPexZzZ93XmAcCqzSbUwaOX1Y8siePI12ijG2mxzI5YIf0mL\n\t /ms5mDjzZ41zbR+y1lyjSjd5si16Ajj3yoCRxi8QeNf7VJlp5WbLWxR/Cm1nnjaTYO\n\t IOJj8irdOEN+aJhdaLJh+fKK7+dKb7KlCCDxdNslqcoGrctiSrHy1YeE9LnRXJRhDK\n\t ivNZRpe0JCZ8M0dux5O/xFyufs7KMwSQdWCOqjqmQAjFgGIXu0NS+l21cUs4WBsHt5\n\t gFLiipJYdZxphu1iU6VvsVMrLyOefgdnpc25102oxNzG5Kz3JMlEpdrlW7fczulnx6\n\t d9eorSp6XyA4Q==", "From": "\"David Hildenbrand (Arm)\" <david@kernel.org>", "To": "linux-kernel@vger.kernel.org", "Cc": "\"linux-mm @ kvack . org\" <linux-mm@kvack.org>,\n \"David Hildenbrand (Arm)\" <david@kernel.org>,\n Andrew Morton <akpm@linux-foundation.org>,\n Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,\n \"Liam R. Howlett\" <Liam.Howlett@oracle.com>,\n Vlastimil Babka <vbabka@kernel.org>, Mike Rapoport <rppt@kernel.org>,\n Suren Baghdasaryan <surenb@google.com>, Michal Hocko <mhocko@suse.com>,\n Jann Horn <jannh@google.com>, Pedro Falcato <pfalcato@suse.de>,\n David Rientjes <rientjes@google.com>, Shakeel Butt <shakeel.butt@linux.dev>,\n \"Matthew Wilcox (Oracle)\" <willy@infradead.org>,\n Alice Ryhl <aliceryhl@google.com>, Madhavan Srinivasan <maddy@linux.ibm.com>,\n Michael Ellerman <mpe@ellerman.id.au>,\n Christian Borntraeger <borntraeger@linux.ibm.com>,\n Janosch Frank <frankja@linux.ibm.com>,\n Claudio Imbrenda <imbrenda@linux.ibm.com>,\n Alexander Gordeev <agordeev@linux.ibm.com>,\n Gerald Schaefer <gerald.schaefer@linux.ibm.com>,\n Heiko Carstens <hca@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>,\n Jarkko Sakkinen <jarkko@kernel.org>, Thomas Gleixner <tglx@kernel.org>,\n Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,\n Greg Kroah-Hartman <gregkh@linuxfoundation.org>, =?utf-8?q?Arve_Hj=C3=B8nne?=\n\t=?utf-8?q?v=C3=A5g?= <arve@android.com>, Todd Kjos <tkjos@android.com>,\n Christian Brauner <brauner@kernel.org>, Carlos Llamas <cmllamas@google.com>,\n Ian Abbott <abbotti@mev.co.uk>,\n H Hartley Sweeten <hsweeten@visionengravers.com>,\n Jani Nikula <jani.nikula@linux.intel.com>,\n Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,\n Rodrigo Vivi <rodrigo.vivi@intel.com>, Tvrtko Ursulin <tursulin@ursulin.net>,\n David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,\n Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,\n Dimitri Sivanich <dimitri.sivanich@hpe.com>, Arnd Bergmann <arnd@arndb.de>,\n Alexei Starovoitov <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>,\n Andrii Nakryiko <andrii@kernel.org>, Peter Zijlstra <peterz@infradead.org>,\n Arnaldo Carvalho de Melo <acme@kernel.org>,\n Namhyung Kim <namhyung@kernel.org>, Andy Lutomirski <luto@kernel.org>,\n Vincenzo Frascino <vincenzo.frascino@arm.com>,\n Eric Dumazet <edumazet@google.com>, Neal Cardwell <ncardwell@google.com>,\n \"David S. Miller\" <davem@davemloft.net>, David Ahern <dsahern@kernel.org>,\n Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,\n Miguel Ojeda <ojeda@kernel.org>, linuxppc-dev@lists.ozlabs.org,\n kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-sgx@vger.kernel.org,\n intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,\n linux-rdma@vger.kernel.org, bpf@vger.kernel.org,\n linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,\n netdev@vger.kernel.org, rust-for-linux@vger.kernel.org, x86@kernel.org", "Subject": "[PATCH v1 00/16] mm: cleanups around unmapping / zapping", "Date": "Fri, 27 Feb 2026 21:08:31 +0100", "Message-ID": "<20260227200848.114019-1-david@kernel.org>", "X-Mailer": "git-send-email 2.43.0", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "A bunch of cleanups around unmapping and zapping. Mostly simplifications,\ncode movements, documentation and renaming of zapping functions.\n\nWith this series, we'll have the following high-level zap/unmap functions\n(excluding high-level folio zapping):\n* unmap_vmas() for actual unmapping (vmas will go away)\n* zap_vma(): zap all page table entries in a vma\n* zap_vma_for_reaping(): zap_vma() that must not block\n* zap_vma_range(): zap a range of page table entries\n* zap_vma_range_batched(): zap_vma_range() with more options and batching\n* zap_special_vma_range(): limited zap_vma_range() for modules\n* __zap_vma_range(): internal helper\n\nPatch #1 is not about unmapping/zapping, but I stumbled over it while\nverifying MADV_DONTNEED range handling.\n\nPatch #16 is related to [1], but makes sense even independent of that.\n\n[1] https://lore.kernel.org/r/aYSKyr7StGpGKNqW@google.com\n\nThe CC list is already long enough. As these are simple changes to\ndrivers/arch code, I'm only CCing maintainers of all changes but only\nreviewers of the MM bits.\n\nCc: Andrew Morton <akpm@linux-foundation.org>\nCc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>\nCc: \"Liam R. Howlett\" <Liam.Howlett@oracle.com>\nCc: Vlastimil Babka <vbabka@kernel.org>\nCc: Mike Rapoport <rppt@kernel.org>\nCc: Suren Baghdasaryan <surenb@google.com>\nCc: Michal Hocko <mhocko@suse.com>\nCc: Jann Horn <jannh@google.com>\nCc: Pedro Falcato <pfalcato@suse.de>\nCc: David Rientjes <rientjes@google.com>\nCc: Shakeel Butt <shakeel.butt@linux.dev>\nCc: \"Matthew Wilcox (Oracle)\" <willy@infradead.org>\nCc: Alice Ryhl <aliceryhl@google.com>\nCc: Madhavan Srinivasan <maddy@linux.ibm.com>\nCc: Michael Ellerman <mpe@ellerman.id.au>\nCc: Christian Borntraeger <borntraeger@linux.ibm.com>\nCc: Janosch Frank <frankja@linux.ibm.com>\nCc: Claudio Imbrenda <imbrenda@linux.ibm.com>\nCc: Alexander Gordeev <agordeev@linux.ibm.com>\nCc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>\nCc: Heiko Carstens <hca@linux.ibm.com>\nCc: Vasily Gorbik <gor@linux.ibm.com>\nCc: Jarkko Sakkinen <jarkko@kernel.org>\nCc: Thomas Gleixner <tglx@kernel.org>\nCc: Ingo Molnar <mingo@redhat.com>\nCc: Borislav Petkov <bp@alien8.de>\nCc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>\nCc: \"Arve Hjønnevåg\" <arve@android.com>\nCc: Todd Kjos <tkjos@android.com>\nCc: Christian Brauner <brauner@kernel.org>\nCc: Carlos Llamas <cmllamas@google.com>\nCc: Alice Ryhl <aliceryhl@google.com>\nCc: Ian Abbott <abbotti@mev.co.uk>\nCc: H Hartley Sweeten <hsweeten@visionengravers.com>\nCc: Jani Nikula <jani.nikula@linux.intel.com>\nCc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>\nCc: Rodrigo Vivi <rodrigo.vivi@intel.com>\nCc: Tvrtko Ursulin <tursulin@ursulin.net>\nCc: David Airlie <airlied@gmail.com>\nCc: Simona Vetter <simona@ffwll.ch>\nCc: Jason Gunthorpe <jgg@ziepe.ca>\nCc: Leon Romanovsky <leon@kernel.org>\nCc: Dimitri Sivanich <dimitri.sivanich@hpe.com>\nCc: Arnd Bergmann <arnd@arndb.de>\nCc: Alexei Starovoitov <ast@kernel.org>\nCc: Daniel Borkmann <daniel@iogearbox.net>\nCc: Andrii Nakryiko <andrii@kernel.org>\nCc: Peter Zijlstra <peterz@infradead.org>\nCc: Arnaldo Carvalho de Melo <acme@kernel.org>\nCc: Namhyung Kim <namhyung@kernel.org>\nCc: Andy Lutomirski <luto@kernel.org>\nCc: Vincenzo Frascino <vincenzo.frascino@arm.com>\nCc: Eric Dumazet <edumazet@google.com>\nCc: Neal Cardwell <ncardwell@google.com>\nCc: \"David S. Miller\" <davem@davemloft.net>\nCc: David Ahern <dsahern@kernel.org>\nCc: Jakub Kicinski <kuba@kernel.org>\nCc: Paolo Abeni <pabeni@redhat.com>\nCc: Miguel Ojeda <ojeda@kernel.org>\n\nCc: linuxppc-dev@lists.ozlabs.org\nCc: kvm@vger.kernel.org\nCc: linux-s390@vger.kernel.org\nCc: linux-sgx@vger.kernel.org\nCc: intel-gfx@lists.freedesktop.org\nCc: dri-devel@lists.freedesktop.org\nCc: linux-rdma@vger.kernel.org\nCc: bpf@vger.kernel.org\nCc: linux-perf-users@vger.kernel.org\nCc: linux-fsdevel@vger.kernel.org\nCc: netdev@vger.kernel.org\nCc: rust-for-linux@vger.kernel.org\nCc: x86@kernel.org\n\n\nDavid Hildenbrand (Arm) (16):\n mm/madvise: drop range checks in madvise_free_single_vma()\n mm/memory: remove \"zap_details\" parameter from zap_page_range_single()\n mm/memory: inline unmap_mapping_range_vma() into\n unmap_mapping_range_tree()\n mm/memory: simplify calculation in unmap_mapping_range_tree()\n mm/oom_kill: use MMU_NOTIFY_CLEAR in __oom_reap_task_mm()\n mm/oom_kill: factor out zapping of VMA into zap_vma_for_reaping()\n mm/memory: rename unmap_single_vma() to __zap_vma_range()\n mm/memory: move adjusting of address range to unmap_vmas()\n mm/memory: convert details->even_cows into details->skip_cows\n mm/memory: use __zap_vma_range() in zap_vma_for_reaping()\n mm/memory: inline unmap_page_range() into __zap_vma_range()\n mm: rename zap_vma_pages() to zap_vma()\n mm: rename zap_page_range_single_batched() to zap_vma_range_batched()\n mm: rename zap_page_range_single() to zap_vma_range()\n mm: rename zap_vma_ptes() to zap_special_vma_range()\n mm/memory: support VM_MIXEDMAP in zap_special_vma_range()\n\n arch/powerpc/platforms/book3s/vas-api.c | 2 +-\n arch/powerpc/platforms/pseries/vas.c | 2 +-\n arch/s390/mm/gmap_helpers.c | 2 +-\n arch/x86/kernel/cpu/sgx/encl.c | 2 +-\n drivers/android/binder/page_range.rs | 4 +-\n drivers/android/binder_alloc.c | 2 +-\n drivers/comedi/comedi_fops.c | 2 +-\n drivers/gpu/drm/i915/i915_mm.c | 4 +-\n drivers/infiniband/core/uverbs_main.c | 6 +-\n drivers/misc/sgi-gru/grumain.c | 2 +-\n include/linux/mm.h | 23 ++-\n kernel/bpf/arena.c | 3 +-\n kernel/events/core.c | 2 +-\n lib/vdso/datastore.c | 2 +-\n mm/internal.h | 7 +-\n mm/interval_tree.c | 5 -\n mm/madvise.c | 24 +--\n mm/memory.c | 217 ++++++++++++------------\n mm/oom_kill.c | 15 +-\n mm/page-writeback.c | 2 +-\n net/ipv4/tcp.c | 7 +-\n rust/kernel/mm/virt.rs | 4 +-\n 22 files changed, 162 insertions(+), 177 deletions(-)\n\n\nbase-commit: df9c51269a5e2a6fbca2884a756a4011a5e78748" }