From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3xYKzh4QT0zDrLy for ; Fri, 18 Aug 2017 08:06:08 +1000 (AEST) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v7HM5Kwq050138 for ; Thu, 17 Aug 2017 18:06:06 -0400 Received: from e06smtp14.uk.ibm.com (e06smtp14.uk.ibm.com [195.75.94.110]) by mx0a-001b2d01.pphosted.com with ESMTP id 2cdkkpr4eu-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 17 Aug 2017 18:06:05 -0400 Received: from localhost by e06smtp14.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 17 Aug 2017 23:06:02 +0100 From: Laurent Dufour To: paulmck@linux.vnet.ibm.com, peterz@infradead.org, akpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com, mhocko@kernel.org, dave@stgolabs.net, jack@suse.cz, Matthew Wilcox , benh@kernel.crashing.org, mpe@ellerman.id.au, paulus@samba.org, Thomas Gleixner , Ingo Molnar , hpa@zytor.com, Will Deacon Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com, npiggin@gmail.com, bsingharora@gmail.com, Tim Chen , linuxppc-dev@lists.ozlabs.org, x86@kernel.org Subject: [PATCH v2 09/20] mm/migrate: Pass vm_fault pointer to migrate_misplaced_page() Date: Fri, 18 Aug 2017 00:05:08 +0200 In-Reply-To: <1503007519-26777-1-git-send-email-ldufour@linux.vnet.ibm.com> References: <1503007519-26777-1-git-send-email-ldufour@linux.vnet.ibm.com> Message-Id: <1503007519-26777-10-git-send-email-ldufour@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , migrate_misplaced_page() is only called during the page fault handling so it's better to pass the pointer to the struct vm_fault instead of the vma. This way during the speculative page fault path the saved vma->vm_flags could be used. Signed-off-by: Laurent Dufour --- include/linux/migrate.h | 4 ++-- mm/memory.c | 2 +- mm/migrate.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3e0d405dc842..65357105cbab 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -108,14 +108,14 @@ static inline void __ClearPageMovable(struct page *page) #ifdef CONFIG_NUMA_BALANCING extern bool pmd_trans_migrating(pmd_t pmd); extern int migrate_misplaced_page(struct page *page, - struct vm_area_struct *vma, int node); + struct vm_fault *vmf, int node); #else static inline bool pmd_trans_migrating(pmd_t pmd) { return false; } static inline int migrate_misplaced_page(struct page *page, - struct vm_area_struct *vma, int node) + struct vm_fault *vmf, int node) { return -EAGAIN; /* can't migrate now */ } diff --git a/mm/memory.c b/mm/memory.c index 68e4fdcce692..53528eeee2b3 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3616,7 +3616,7 @@ static int do_numa_page(struct vm_fault *vmf) } /* Migrate to the requested node */ - migrated = migrate_misplaced_page(page, vma, target_nid); + migrated = migrate_misplaced_page(page, vmf, target_nid); if (migrated) { page_nid = target_nid; flags |= TNF_MIGRATED; diff --git a/mm/migrate.c b/mm/migrate.c index d68a41da6abb..354f74f7dad3 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1847,7 +1847,7 @@ bool pmd_trans_migrating(pmd_t pmd) * node. Caller is expected to have an elevated reference count on * the page that will be dropped by this function before returning. */ -int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma, +int migrate_misplaced_page(struct page *page, struct vm_fault *vmf, int node) { pg_data_t *pgdat = NODE_DATA(node); @@ -1860,7 +1860,7 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma, * with execute permissions as they are probably shared libraries. */ if (page_mapcount(page) != 1 && page_is_file_cache(page) && - (vma->vm_flags & VM_EXEC)) + (vmf->vma_flags & VM_EXEC)) goto out; /* -- 2.7.4