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GET /api/patches/2216655/?format=api
{ "id": 2216655, "url": "http://patchwork.ozlabs.org/api/patches/2216655/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260327021403.214713-23-usama.arif@linux.dev/", "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": "<20260327021403.214713-23-usama.arif@linux.dev>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260327021403.214713-23-usama.arif@linux.dev/", "date": "2026-03-27T02:09:04", "name": "[v3,22/24] selftests/mm: add partial_mlock test", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "6176fedb410f90acba3bf758d5491337e9d6be17", "submitter": { "id": 92719, "url": "http://patchwork.ozlabs.org/api/people/92719/?format=api", "name": "Usama Arif", "email": "usama.arif@linux.dev" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260327021403.214713-23-usama.arif@linux.dev/mbox/", "series": [ { "id": 497678, "url": "http://patchwork.ozlabs.org/api/series/497678/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=497678", "date": "2026-03-27T02:08:43", "name": "[v3,01/24] mm: thp: make split_huge_pmd functions return int for error propagation", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/497678/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216655/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216655/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-18865-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 (1024-bit key;\n unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256\n header.s=key1 header.b=nFrkNXxv;\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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Fri, 27 Mar 2026 13:16:35 +1100 (AEDT)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1774577796;\n\tcv=none;\n b=BSUIuFE1t0HaAq19LZVCBQR1DN4hmqBAe0Pi3/PQctscjdOFmnYCJvN+Y+TVhJSqJo7DRGWj/VsvpWYin2iTO6mSYu5nYr63zGVgCzB9Jnu18XqHSCEexEPtwz8azaplg+dFDvmGhkEPEQvn1CIMUM9a+04bSSiJYmtK+XkZl2elYx3g7MGhOwVxYBBIGCN8VpdopEw4WFVxrMGCPBfk6m3fTd9MiD0BRnJZNKPKpwhNSH/F+E4TIEVpNcXYtuTanFriKgqvNg+3GU2mAZE1gahah9hcRNHOao4PNc4fGyuET07XlZYyoxuhRuQGd9NcdemU4NG8lk8JZvQ8mQjQ5Q==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1774577796; c=relaxed/relaxed;\n\tbh=+u28b+kGwOwWeo4iPTn5u1dAfo4aLeElFP2cFybYpB4=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=afOUEW7yR3AQZ7yvrGqojalLrfLT0QHzQ7z+ydBZrwaw3E4Mdd7Tvmk7SFxGsGxUjO0cCROK73oEKVmMU8Zd0Hnagu9q2hdiAPiNkhQfRCO4CkiGchsgkgHL+UpGCbuABXR+P1oL4kC8l2UB3WRionW+WWUBPpoqXoWewOY4G7y2nCQXbR50HsO7CQZYclr8Rozj4OqXKW3CRuGkl7Cm1OhetRgfDMVNF0Yzs6GBnvfWwwJCe+2bfcKp8wtwBRB/iLj9rDokeWJuoD3SXHpMlUAlvXALijWkNCll6sA4kIFpfhn9meDJV4s9WzV+XGkDQZlhZNlUaiLTU4sBS8Rk7w==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.dev; dkim=pass (1024-bit key;\n unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256\n header.s=key1 header.b=nFrkNXxv; dkim-atps=neutral;\n spf=pass (client-ip=95.215.58.178; helo=out-178.mta1.migadu.com;\n envelope-from=usama.arif@linux.dev;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.dev", "X-Report-Abuse": "Please report any abuse attempt to abuse@migadu.com and\n include these headers.", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1;\n\tt=1774577777;\n\th=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n\t to:to:cc:cc:mime-version:mime-version:\n\t content-transfer-encoding:content-transfer-encoding:\n\t in-reply-to:in-reply-to:references:references;\n\tbh=+u28b+kGwOwWeo4iPTn5u1dAfo4aLeElFP2cFybYpB4=;\n\tb=nFrkNXxvndBSqppjWyV9ntkfxnDZ0DtuCQnUOY5sup4Cn3dvGfyt7wUKnT4xAdfcGQUu19\n\tprxL9x0QtRJ7eGgfh7QoH8qmgtTOcQ/tFTBltl+w+k5V6XIa5MkQdNn/z6ZBfUXndUQ60X\n\toH4UtoxyWYliZvg4O6754ph/DAJrixE=", "From": "Usama Arif <usama.arif@linux.dev>", "To": "Andrew Morton <akpm@linux-foundation.org>,\n\tdavid@kernel.org,\n\tLorenzo Stoakes <ljs@kernel.org>,\n\twilly@infradead.org,\n\tlinux-mm@kvack.org", "Cc": "fvdl@google.com,\n\thannes@cmpxchg.org,\n\triel@surriel.com,\n\tshakeel.butt@linux.dev,\n\tkas@kernel.org,\n\tbaohua@kernel.org,\n\tdev.jain@arm.com,\n\tbaolin.wang@linux.alibaba.com,\n\tnpache@redhat.com,\n\tLiam.Howlett@oracle.com,\n\tryan.roberts@arm.com,\n\tVlastimil Babka <vbabka@kernel.org>,\n\tlance.yang@linux.dev,\n\tlinux-kernel@vger.kernel.org,\n\tkernel-team@meta.com,\n\tmaddy@linux.ibm.com,\n\tmpe@ellerman.id.au,\n\tlinuxppc-dev@lists.ozlabs.org,\n\thca@linux.ibm.com,\n\tgor@linux.ibm.com,\n\tagordeev@linux.ibm.com,\n\tborntraeger@linux.ibm.com,\n\tsvens@linux.ibm.com,\n\tlinux-s390@vger.kernel.org,\n\tUsama Arif <usama.arif@linux.dev>", "Subject": "[v3 22/24] selftests/mm: add partial_mlock test", "Date": "Thu, 26 Mar 2026 19:09:04 -0700", "Message-ID": "<20260327021403.214713-23-usama.arif@linux.dev>", "In-Reply-To": "<20260327021403.214713-1-usama.arif@linux.dev>", "References": "<20260327021403.214713-1-usama.arif@linux.dev>", "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-Migadu-Flow": "FLOW_OUT", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS autolearn=disabled\n\tversion=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Add test for partial mlock on THP which exercises walk_page_range()\nwith a subset of the THP. This should trigger a PMD split since\nmlock operates at page granularity.\n\nSigned-off-by: Usama Arif <usama.arif@linux.dev>\n---\n .../testing/selftests/mm/thp_pmd_split_test.c | 26 +++++++++++++++++++\n 1 file changed, 26 insertions(+)", "diff": "diff --git a/tools/testing/selftests/mm/thp_pmd_split_test.c b/tools/testing/selftests/mm/thp_pmd_split_test.c\nindex 4944a5a516da9..3c9f05457efec 100644\n--- a/tools/testing/selftests/mm/thp_pmd_split_test.c\n+++ b/tools/testing/selftests/mm/thp_pmd_split_test.c\n@@ -177,4 +177,30 @@ TEST_F(thp_pmd_split, partial_mprotect)\n \t\tself->split_pmd_failed_before);\n }\n \n+/*\n+ * Partial mlock triggering split (walk_page_range)\n+ *\n+ * Tests mlock on a partial THP region which should trigger a PMD split.\n+ */\n+TEST_F(thp_pmd_split, partial_mlock)\n+{\n+\tint ret;\n+\n+\tret = allocate_thp(self->aligned, self->pmdsize);\n+\tif (ret)\n+\t\tSKIP(return, \"Failed to allocate THP\");\n+\n+\t/* Partial mlock - should trigger PMD split */\n+\tret = mlock((char *)self->aligned + self->pagesize, self->pagesize);\n+\tif (ret && errno == ENOMEM)\n+\t\tSKIP(return, \"mlock failed with ENOMEM (resource limit)\");\n+\tASSERT_EQ(ret, 0);\n+\n+\t/* Cleanup */\n+\tmunlock((char *)self->aligned + self->pagesize, self->pagesize);\n+\n+\tlog_and_check_pmd_split(_metadata, self->split_pmd_before,\n+\t\tself->split_pmd_failed_before);\n+}\n+\n TEST_HARNESS_MAIN\n", "prefixes": [ "v3", "22/24" ] }