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GET /api/patches/2202524/?format=api
{ "id": 2202524, "url": "http://patchwork.ozlabs.org/api/patches/2202524/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260227200848.114019-4-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": "<20260227200848.114019-4-david@kernel.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260227200848.114019-4-david@kernel.org/", "date": "2026-02-27T20:08:34", "name": "[v1,03/16] mm/memory: inline unmap_mapping_range_vma() into unmap_mapping_range_tree()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "40ee735b56b3cf08df91d60a2ed00b613db5d3fe", "submitter": { "id": 92023, "url": "http://patchwork.ozlabs.org/api/people/92023/?format=api", "name": "David Hildenbrand (Arm)", "email": "david@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260227200848.114019-4-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/patches/2202524/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2202524/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-17411-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=SKSqFMwc;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1772223001; c=relaxed/relaxed;\n\tbh=DUhf1JuSB9OPze92qz/d6HbXdXDvs4qBvhHKIVZpPP4=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=LQK/mro2Ly9HaXWdRLFy+dB3Dv+ofF7Al4YaZr2GfodXV7jhCiGvjpg4mOTBeZliR+wiUa1bZcSSpgt5uKDwFOcq3Udqq/WScmCJRUDm7SWUy3ANBKb/jRbB0W5mU8FIUYVM1IggY0WAwBfoWLTbxaKbuGva9CwrxE/M56wzA+DAQviA9aHVYoWUgFIk8NMHCqDaI1eM8sLXDncvetNbc0W7qfFpA/AyaivSVs48tlemLV2Ap4G28OrKkgLTGr1x14N3Fw7MvfpnYsk72H9b2R6AcLTTodpIZrT/HeC6NlgYVp0D9ZiVTyYf62CC2ZKE7VeYasAsrqj0OX0hkgODqg==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=SKSqFMwc; dkim-atps=neutral;\n spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org;\n envelope-from=david@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1772222998;\n\tbh=6LDS5+Vnu1htyspttVgh9zMYsh7tIZY4ma3ymZBtFxA=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=SKSqFMwcnc7VlfFpJ1YNAbm4Z+zF+/LGzUP4CQ7sh7kvhpYmsBKfiG+nk4e+qHYLY\n\t +Cdf6OJiVUJQfBE1Be1Oajv2J5qqAr7rTEQSaKgth6pGitrG8Hc1wPVk2TOXaWSysY\n\t 5NZBg2/wRYlKWBg3m+g+8mhjmq7xDqKiE1UDk9cYXlckyJFxfD5ezJwIvK9pjt6B0f\n\t +9uLN2/GF+QIAANdneeZojFKTbtzB83JiF1S8jiEQTloHhUkWPaWDcFKguB8BRteav\n\t xs9wWSj8gILbDPly5WkEX4gjf8F5WAVfUBqcy1dk1YtENH/MRugbDFtWtjB0lCg6Ka\n\t Iqb4hdLjMfU5A==", "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 03/16] mm/memory: inline unmap_mapping_range_vma() into\n unmap_mapping_range_tree()", "Date": "Fri, 27 Feb 2026 21:08:34 +0100", "Message-ID": "<20260227200848.114019-4-david@kernel.org>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260227200848.114019-1-david@kernel.org>", "References": "<20260227200848.114019-1-david@kernel.org>", "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-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": "Let's remove the number of unmap-related functions that cause confusion\nby inlining unmap_mapping_range_vma() into its single caller. The end\nresult looks pretty readable.\n\nSigned-off-by: David Hildenbrand (Arm) <david@kernel.org>\n---\n mm/memory.c | 23 +++++++----------------\n 1 file changed, 7 insertions(+), 16 deletions(-)", "diff": "diff --git a/mm/memory.c b/mm/memory.c\nindex 19f5f9a60995..5c47309331f5 100644\n--- a/mm/memory.c\n+++ b/mm/memory.c\n@@ -4221,18 +4221,6 @@ static vm_fault_t do_wp_page(struct vm_fault *vmf)\n \treturn wp_page_copy(vmf);\n }\n \n-static void unmap_mapping_range_vma(struct vm_area_struct *vma,\n-\t\tunsigned long start_addr, unsigned long end_addr,\n-\t\tstruct zap_details *details)\n-{\n-\tstruct mmu_gather tlb;\n-\n-\ttlb_gather_mmu(&tlb, vma->vm_mm);\n-\tzap_page_range_single_batched(&tlb, vma, start_addr,\n-\t\t\t\t end_addr - start_addr, details);\n-\ttlb_finish_mmu(&tlb);\n-}\n-\n static inline void unmap_mapping_range_tree(struct rb_root_cached *root,\n \t\t\t\t\t pgoff_t first_index,\n \t\t\t\t\t pgoff_t last_index,\n@@ -4240,17 +4228,20 @@ static inline void unmap_mapping_range_tree(struct rb_root_cached *root,\n {\n \tstruct vm_area_struct *vma;\n \tpgoff_t vba, vea, zba, zea;\n+\tunsigned long start, size;\n+\tstruct mmu_gather tlb;\n \n \tvma_interval_tree_foreach(vma, root, first_index, last_index) {\n \t\tvba = vma->vm_pgoff;\n \t\tvea = vba + vma_pages(vma) - 1;\n \t\tzba = max(first_index, vba);\n \t\tzea = min(last_index, vea);\n+\t\tstart = ((zba - vba) << PAGE_SHIFT) + vma->vm_start;\n+\t\tsize = (zea - zba + 1) << PAGE_SHIFT;\n \n-\t\tunmap_mapping_range_vma(vma,\n-\t\t\t((zba - vba) << PAGE_SHIFT) + vma->vm_start,\n-\t\t\t((zea - vba + 1) << PAGE_SHIFT) + vma->vm_start,\n-\t\t\t\tdetails);\n+\t\ttlb_gather_mmu(&tlb, vma->vm_mm);\n+\t\tzap_page_range_single_batched(&tlb, vma, start, size, details);\n+\t\ttlb_finish_mmu(&tlb);\n \t}\n }\n \n", "prefixes": [ "v1", "03/16" ] }