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GET /api/patches/2217293/?format=api
{ "id": 2217293, "url": "http://patchwork.ozlabs.org/api/patches/2217293/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260327205457.604224-4-surenb@google.com/", "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": "<20260327205457.604224-4-surenb@google.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260327205457.604224-4-surenb@google.com/", "date": "2026-03-27T20:54:54", "name": "[v6,3/6] mm/khugepaged: use vma_start_write_killable() in collapse_huge_page()", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "068d8713728d7d5cf86710fe23db5021a2376055", "submitter": { "id": 74729, "url": "http://patchwork.ozlabs.org/api/people/74729/?format=api", "name": "Suren Baghdasaryan", "email": "surenb@google.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260327205457.604224-4-surenb@google.com/mbox/", "series": [ { "id": 497828, "url": "http://patchwork.ozlabs.org/api/series/497828/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=497828", "date": "2026-03-27T20:54:51", "name": "Use killable vma write locking in most places", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/497828/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217293/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217293/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-18941-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=google.com header.i=@google.com header.a=rsa-sha256\n header.s=20251104 header.b=M2DSWmqj;\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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Fri, 27\n Mar 2026 13:55:08 -0700 (PDT)", "Date": "Fri, 27 Mar 2026 13:54:54 -0700", "In-Reply-To": "<20260327205457.604224-1-surenb@google.com>", "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", "References": "<20260327205457.604224-1-surenb@google.com>", "X-Mailer": "git-send-email 2.53.0.1018.g2bb0e51243-goog", "Message-ID": "<20260327205457.604224-4-surenb@google.com>", "Subject": "[PATCH v6 3/6] mm/khugepaged: use vma_start_write_killable() in\n collapse_huge_page()", "From": "Suren Baghdasaryan <surenb@google.com>", "To": "akpm@linux-foundation.org", "Cc": "willy@infradead.org, david@kernel.org, ziy@nvidia.com,\n\tmatthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com,\n\tbyungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com,\n\tapopple@nvidia.com, ljs@kernel.org, baolin.wang@linux.alibaba.com,\n\tLiam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com,\n\tdev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, vbabka@suse.cz,\n\tjannh@google.com, rppt@kernel.org, mhocko@suse.com, pfalcato@suse.de,\n\tkees@kernel.org, maddy@linux.ibm.com, npiggin@gmail.com, mpe@ellerman.id.au,\n\tchleroy@kernel.org, borntraeger@linux.ibm.com, frankja@linux.ibm.com,\n\timbrenda@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com,\n\tagordeev@linux.ibm.com, svens@linux.ibm.com, gerald.schaefer@linux.ibm.com,\n\tlinux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, surenb@google.com", "Content-Type": "text/plain; charset=\"UTF-8\"", "X-Spam-Status": "No, score=-7.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,\n\tUSER_IN_DEF_DKIM_WL autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Replace vma_start_write() with vma_start_write_killable(), improving\nreaction time to the kill signal.\nReplace vma_start_write() in collapse_huge_page().\n\nSuggested-by: Matthew Wilcox <willy@infradead.org>\nSigned-off-by: Suren Baghdasaryan <surenb@google.com>\nReviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>\n---\n mm/khugepaged.c | 5 ++++-\n 1 file changed, 4 insertions(+), 1 deletion(-)", "diff": "diff --git a/mm/khugepaged.c b/mm/khugepaged.c\nindex d06d84219e1b..a1825a4dec8b 100644\n--- a/mm/khugepaged.c\n+++ b/mm/khugepaged.c\n@@ -1166,7 +1166,10 @@ static enum scan_result collapse_huge_page(struct mm_struct *mm, unsigned long a\n \tif (result != SCAN_SUCCEED)\n \t\tgoto out_up_write;\n \t/* check if the pmd is still valid */\n-\tvma_start_write(vma);\n+\tif (vma_start_write_killable(vma)) {\n+\t\tresult = SCAN_FAIL;\n+\t\tgoto out_up_write;\n+\t}\n \tresult = check_pmd_still_valid(mm, address, pmd);\n \tif (result != SCAN_SUCCEED)\n \t\tgoto out_up_write;\n", "prefixes": [ "v6", "3/6" ] }