From 75c70128a67311070115b90d826a229d4bbbb2b5 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Thu, 21 Sep 2023 15:44:16 +0800 Subject: mm: mempolicy: make mpol_misplaced() to take a folio In preparation for large folio numa balancing, make mpol_misplaced() to take a folio, no functional change intended. Link: https://lkml.kernel.org/r/20230921074417.24004-6-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Cc: David Hildenbrand Cc: "Huang, Ying" Cc: Hugh Dickins Cc: Matthew Wilcox (Oracle) Cc: Mike Kravetz Cc: Zi Yan Signed-off-by: Andrew Morton --- mm/memory.c | 2 +- mm/mempolicy.c | 22 ++++++++++++---------- 2 files changed, 13 insertions(+), 11 deletions(-) (limited to 'mm') diff --git a/mm/memory.c b/mm/memory.c index 20b290c9dc87..7ca16ed67634 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4738,7 +4738,7 @@ int numa_migrate_prep(struct folio *folio, struct vm_area_struct *vma, *flags |= TNF_FAULT_LOCAL; } - return mpol_misplaced(&folio->page, vma, addr); + return mpol_misplaced(folio, vma, addr); } static vm_fault_t do_numa_page(struct vm_fault *vmf) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index f1b00d6ac7ee..69c0eac7292c 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2564,24 +2564,25 @@ static void sp_free(struct sp_node *n) } /** - * mpol_misplaced - check whether current page node is valid in policy + * mpol_misplaced - check whether current folio node is valid in policy * - * @page: page to be checked - * @vma: vm area where page mapped - * @addr: virtual address where page mapped + * @folio: folio to be checked + * @vma: vm area where folio mapped + * @addr: virtual address in @vma for shared policy lookup and interleave policy * - * Lookup current policy node id for vma,addr and "compare to" page's + * Lookup current policy node id for vma,addr and "compare to" folio's * node id. Policy determination "mimics" alloc_page_vma(). * Called from fault path where we know the vma and faulting address. * * Return: NUMA_NO_NODE if the page is in a node that is valid for this - * policy, or a suitable node ID to allocate a replacement page from. + * policy, or a suitable node ID to allocate a replacement folio from. */ -int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long addr) +int mpol_misplaced(struct folio *folio, struct vm_area_struct *vma, + unsigned long addr) { struct mempolicy *pol; struct zoneref *z; - int curnid = page_to_nid(page); + int curnid = folio_nid(folio); unsigned long pgoff; int thiscpu = raw_smp_processor_id(); int thisnid = cpu_to_node(thiscpu); @@ -2637,11 +2638,12 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long BUG(); } - /* Migrate the page towards the node whose CPU is referencing it */ + /* Migrate the folio towards the node whose CPU is referencing it */ if (pol->flags & MPOL_F_MORON) { polnid = thisnid; - if (!should_numa_migrate_memory(current, page, curnid, thiscpu)) + if (!should_numa_migrate_memory(current, &folio->page, curnid, + thiscpu)) goto out; } -- cgit v1.2.3