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GET /api/patches/2202532/?format=api
{ "id": 2202532, "url": "http://patchwork.ozlabs.org/api/patches/2202532/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260227200848.114019-12-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": "<20260227200848.114019-12-david@kernel.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260227200848.114019-12-david@kernel.org/", "date": "2026-02-27T20:08:42", "name": "[v1,11/16] mm/memory: inline unmap_page_range() into __zap_vma_range()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ef0a04a5764791682aa24dc9056837128aae6f00", "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/20260227200848.114019-12-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/2202532/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2202532/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-17419-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=ngaOty6e;\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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Sat, 28 Feb 2026 07:12:12 +1100 (AEDT)", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby sea.source.kernel.org (Postfix) with ESMTP id 952F141843;\n\tFri, 27 Feb 2026 20:12:10 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id B39E4C116C6;\n\tFri, 27 Feb 2026 20:11:54 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1772223132;\n\tcv=none;\n b=TfbNIjBsdqaSBh4fXOs81F3nZGnXmIN3pOPfUi0fm7HxY+jqQe9Zrii7zuzF7CPDyJ3BeAIxU9e91NePbCyIZH4SPkc/KjZgUcIgGMG/d3vTiT3izuPnkKLwRwAEt3I0ugM8INJGJDYFpE5w5p2ew3eIeIf4QAfZ8lK52HsqfGX+aoOly1vvvGeTL1CmV5PlXQlGWlGlfCifUbep3Vlwn7lLKG0Yy3iSoheiQbqIrptW9Qnzp2/tNrCfaWlxfn5gGcZjQk8+Eh3azFoEaEY6wUEHwatPSSufLVgmxYH0CcYrs0WKuD3opXK+VcKVadsmhXIfbzh7nBJ1n44my/sdyw==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1772223132; c=relaxed/relaxed;\n\tbh=7fCPmvc1vvorzRSL+A9RsibKTn2zoH1ERt88khz0mWY=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=MRuuqnOlDIrL3G2caSsdfBXTsDgrD+E9PwVF2ipDUdtnJcp3zDI0gUBr0at0Pk/w+gLWyCcojm6pYj9jimNLzTyfwqi4bMYq2bNYCZg9gF2N/hovfldHAKseCasGfWSGASvs1oiTIPrM+BEj3ug/qp2DCW0vBUublwdXhVEwtNgSShq7D/EqJa6ehtwXgMIIatVW45RyYkHiCqJ/SEuglfcEAPsB+r5NxABqekYyTn5Y29+DJtCzIX1Vi1ZWvJR9USTSrNE82bfvmZayhww2ew3G0ExWRhnl2VBB6UQGIliFt/Q6V1TqQrUp+lz4cYTP53aXOEYo+YRcX5BQM9QooA==", "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=ngaOty6e; 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=1772223130;\n\tbh=clYyWttfcaFGSXdSI+NFUKwc/GgjopvB2fmwPUXTrio=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=ngaOty6eXM5j7is+WGyPTLemdZsPBcNe61ojNKAJgZwE71n14yO064jdNtdsbX/Ee\n\t RlnqA3sETb9Sy0WtFg1UK1UEcaoO+Lw/1O2wov2lG6O/6NijoRCZZU6GJofxg0KeVi\n\t odWoGYGuMoHkVNOTEmUkygOdILEoNupmNcfh6X2yUbKxw8hqRUN3XAIuwmUTHbl0uv\n\t Wl5I/FU4hI2dyfaSjJKbwQzwLAdwBQdMN+UbkJt1AStL/fzXkytyB/+eDsgIyfI8n/\n\t b9L2nmNB1P0iCf65mL/2gwS2RTtD6WGlw6k+T+OihQnVUd6MdiJbH5WiiAYE79FL+a\n\t YRQ32YLZxixOw==", "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 11/16] mm/memory: inline unmap_page_range() into\n __zap_vma_range()", "Date": "Fri, 27 Feb 2026 21:08:42 +0100", "Message-ID": "<20260227200848.114019-12-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 inline it into the single caller to reduce the number of confusing\nunmap/zap helpers.\n\nGet rid of the unnecessary BUG_ON().\n\nSigned-off-by: David Hildenbrand (Arm) <david@kernel.org>\n---\n mm/memory.c | 32 ++++++++++++--------------------\n 1 file changed, 12 insertions(+), 20 deletions(-)", "diff": "diff --git a/mm/memory.c b/mm/memory.c\nindex 394b2e931974..1c0bcdfc73b7 100644\n--- a/mm/memory.c\n+++ b/mm/memory.c\n@@ -2056,25 +2056,6 @@ static inline unsigned long zap_p4d_range(struct mmu_gather *tlb,\n \treturn addr;\n }\n \n-static void unmap_page_range(struct mmu_gather *tlb, struct vm_area_struct *vma,\n-\t\tunsigned long addr, unsigned long end,\n-\t\tstruct zap_details *details)\n-{\n-\tpgd_t *pgd;\n-\tunsigned long next;\n-\n-\tBUG_ON(addr >= end);\n-\ttlb_start_vma(tlb, vma);\n-\tpgd = pgd_offset(vma->vm_mm, addr);\n-\tdo {\n-\t\tnext = pgd_addr_end(addr, end);\n-\t\tif (pgd_none_or_clear_bad(pgd))\n-\t\t\tcontinue;\n-\t\tnext = zap_p4d_range(tlb, vma, pgd, addr, next, details);\n-\t} while (pgd++, addr = next, addr != end);\n-\ttlb_end_vma(tlb, vma);\n-}\n-\n static void __zap_vma_range(struct mmu_gather *tlb, struct vm_area_struct *vma,\n \t\tunsigned long start, unsigned long end,\n \t\tstruct zap_details *details)\n@@ -2100,7 +2081,18 @@ static void __zap_vma_range(struct mmu_gather *tlb, struct vm_area_struct *vma,\n \t\t\treturn;\n \t\t__unmap_hugepage_range(tlb, vma, start, end, NULL, zap_flags);\n \t} else {\n-\t\tunmap_page_range(tlb, vma, start, end, details);\n+\t\tunsigned long next, cur = start;\n+\t\tpgd_t *pgd;\n+\n+\t\ttlb_start_vma(tlb, vma);\n+\t\tpgd = pgd_offset(vma->vm_mm, cur);\n+\t\tdo {\n+\t\t\tnext = pgd_addr_end(cur, end);\n+\t\t\tif (pgd_none_or_clear_bad(pgd))\n+\t\t\t\tcontinue;\n+\t\t\tnext = zap_p4d_range(tlb, vma, pgd, cur, next, details);\n+\t\t} while (pgd++, cur = next, cur != end);\n+\t\ttlb_end_vma(tlb, vma);\n \t}\n }\n \n", "prefixes": [ "v1", "11/16" ] }