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GET /api/patches/811791/?format=api
{ "id": 811791, "url": "http://patchwork.ozlabs.org/api/patches/811791/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1504894024-2750-10-git-send-email-ldufour@linux.vnet.ibm.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": "<1504894024-2750-10-git-send-email-ldufour@linux.vnet.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/1504894024-2750-10-git-send-email-ldufour@linux.vnet.ibm.com/", "date": "2017-09-08T18:06:53", "name": "[v3,09/20] mm/migrate: Pass vm_fault pointer to migrate_misplaced_page()", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "89dbb5bc3a216da76f1094a4619d5b385a9d9df2", "submitter": { "id": 40248, "url": "http://patchwork.ozlabs.org/api/people/40248/?format=api", "name": "Laurent Dufour", "email": "ldufour@linux.vnet.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1504894024-2750-10-git-send-email-ldufour@linux.vnet.ibm.com/mbox/", "series": [ { "id": 2269, "url": "http://patchwork.ozlabs.org/api/series/2269/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=2269", "date": "2017-09-08T18:06:44", "name": "Speculative page faults", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/2269/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/811791/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/811791/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xpmKg0j5lz9s82\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSat, 9 Sep 2017 04:38:15 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xpmKf6hfRzDrJL\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSat, 9 Sep 2017 04:38:14 +1000 (AEST)", "from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com\n\t[148.163.156.1])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xplfV1LxszDrX7\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tSat, 9 Sep 2017 04:07:46 +1000 (AEST)", "from pps.filterd (m0098393.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id\n\tv88I6pYl109182\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 8 Sep 2017 14:07:44 -0400", "from e06smtp12.uk.ibm.com (e06smtp12.uk.ibm.com [195.75.94.108])\n\tby mx0a-001b2d01.pphosted.com with ESMTP id 2cuvgwkkkr-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 08 Sep 2017 14:07:44 -0400", "from localhost\n\tby e06smtp12.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! Violators will be prosecuted\n\tfor <linuxppc-dev@lists.ozlabs.org> from <ldufour@linux.vnet.ibm.com>;\n\tFri, 8 Sep 2017 19:07:41 +0100", "from b06cxnps4074.portsmouth.uk.ibm.com (9.149.109.196)\n\tby e06smtp12.uk.ibm.com (192.168.101.142) with IBM ESMTP SMTP\n\tGateway: Authorized Use Only! Violators will be prosecuted; \n\tFri, 8 Sep 2017 19:07:35 +0100", "from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60])\n\tby b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with\n\tESMTP id v88I7ZEK23265518; Fri, 8 Sep 2017 18:07:35 GMT", "from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 3370D42045;\n\tFri, 8 Sep 2017 19:04:02 +0100 (BST)", "from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 73AE74203F;\n\tFri, 8 Sep 2017 19:04:00 +0100 (BST)", "from nimbus.lab.toulouse-stg.fr.ibm.com (unknown [9.145.31.125])\n\tby d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP;\n\tFri, 8 Sep 2017 19:04:00 +0100 (BST)" ], "Authentication-Results": "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com\n\t(client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com;\n\tenvelope-from=ldufour@linux.vnet.ibm.com; receiver=<UNKNOWN>)", "From": "Laurent Dufour <ldufour@linux.vnet.ibm.com>", "To": "paulmck@linux.vnet.ibm.com, peterz@infradead.org,\n\takpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com, \n\tmhocko@kernel.org, dave@stgolabs.net, jack@suse.cz,\n\tMatthew Wilcox <willy@infradead.org>, benh@kernel.crashing.org,\n\tmpe@ellerman.id.au, paulus@samba.org,\n\tThomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, \n\thpa@zytor.com, Will Deacon <will.deacon@arm.com>,\n\tSergey Senozhatsky <sergey.senozhatsky@gmail.com>", "Subject": "[PATCH v3 09/20] mm/migrate: Pass vm_fault pointer to\n\tmigrate_misplaced_page()", "Date": "Fri, 8 Sep 2017 20:06:53 +0200", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1504894024-2750-1-git-send-email-ldufour@linux.vnet.ibm.com>", "References": "<1504894024-2750-1-git-send-email-ldufour@linux.vnet.ibm.com>", "X-TM-AS-GCONF": "00", "x-cbid": "17090818-0008-0000-0000-000004959E61", "X-IBM-AV-DETECTION": "SAVI=unused REMOTE=unused XFE=unused", "x-cbparentid": "17090818-0009-0000-0000-00001E26A5F1", "Message-Id": "<1504894024-2750-10-git-send-email-ldufour@linux.vnet.ibm.com>", "X-Proofpoint-Virus-Version": "vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-09-08_12:, , signatures=0", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=0\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000\n\tdefinitions=main-1709080270", "X-BeenThere": "linuxppc-dev@lists.ozlabs.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List\n\t<linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Cc": "linuxppc-dev@lists.ozlabs.org, x86@kernel.org,\n\tlinux-kernel@vger.kernel.org, npiggin@gmail.com, linux-mm@kvack.org,\n\tTim Chen <tim.c.chen@linux.intel.com>, \n\tharen@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org", "Sender": "\"Linuxppc-dev\"\n\t<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "content": "migrate_misplaced_page() is only called during the page fault handling so\nit's better to pass the pointer to the struct vm_fault instead of the vma.\n\nThis way during the speculative page fault path the saved vma->vm_flags\ncould be used.\n\nSigned-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>\n---\n include/linux/migrate.h | 4 ++--\n mm/memory.c | 2 +-\n mm/migrate.c | 4 ++--\n 3 files changed, 5 insertions(+), 5 deletions(-)", "diff": "diff --git a/include/linux/migrate.h b/include/linux/migrate.h\nindex 643c7ae7d7b4..a815ed6838b3 100644\n--- a/include/linux/migrate.h\n+++ b/include/linux/migrate.h\n@@ -126,14 +126,14 @@ static inline void __ClearPageMovable(struct page *page)\n #ifdef CONFIG_NUMA_BALANCING\n extern bool pmd_trans_migrating(pmd_t pmd);\n extern int migrate_misplaced_page(struct page *page,\n-\t\t\t\t struct vm_area_struct *vma, int node);\n+\t\t\t\t struct vm_fault *vmf, int node);\n #else\n static inline bool pmd_trans_migrating(pmd_t pmd)\n {\n \treturn false;\n }\n static inline int migrate_misplaced_page(struct page *page,\n-\t\t\t\t\t struct vm_area_struct *vma, int node)\n+\t\t\t\t\t struct vm_fault *vmf, int node)\n {\n \treturn -EAGAIN; /* can't migrate now */\n }\ndiff --git a/mm/memory.c b/mm/memory.c\nindex 401b13cbfc3c..a4982917c16e 100644\n--- a/mm/memory.c\n+++ b/mm/memory.c\n@@ -3790,7 +3790,7 @@ static int do_numa_page(struct vm_fault *vmf)\n \t}\n \n \t/* Migrate to the requested node */\n-\tmigrated = migrate_misplaced_page(page, vma, target_nid);\n+\tmigrated = migrate_misplaced_page(page, vmf, target_nid);\n \tif (migrated) {\n \t\tpage_nid = target_nid;\n \t\tflags |= TNF_MIGRATED;\ndiff --git a/mm/migrate.c b/mm/migrate.c\nindex 6954c1435833..4e8e22b9df8f 100644\n--- a/mm/migrate.c\n+++ b/mm/migrate.c\n@@ -1939,7 +1939,7 @@ bool pmd_trans_migrating(pmd_t pmd)\n * node. Caller is expected to have an elevated reference count on\n * the page that will be dropped by this function before returning.\n */\n-int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma,\n+int migrate_misplaced_page(struct page *page, struct vm_fault *vmf,\n \t\t\t int node)\n {\n \tpg_data_t *pgdat = NODE_DATA(node);\n@@ -1952,7 +1952,7 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma,\n \t * with execute permissions as they are probably shared libraries.\n \t */\n \tif (page_mapcount(page) != 1 && page_is_file_cache(page) &&\n-\t (vma->vm_flags & VM_EXEC))\n+\t (vmf->vma_flags & VM_EXEC))\n \t\tgoto out;\n \n \t/*\n", "prefixes": [ "v3", "09/20" ] }