The patch titled
Subject: thp-change-split_huge_page_pmd-interface-v6
has been removed from the -mm tree. Its filename was
thp-change-split_huge_page_pmd-interface-v6.patch
This patch was dropped because it was folded into thp-change-split_huge_page_pmd-interface.patch
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: thp-change-split_huge_page_pmd-interface-v6
Pass vma instead of mm and add address parameter.
In most cases we already have vma on the stack. We provides
split_huge_page_pmd_mm() for few cases when we have mm, but not vma.
This change is preparation to huge zero pmd splitting implementation.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/vm/transhuge.txt | 4 ++--
mm/huge_memory.c | 7 ++++---
2 files changed, 6 insertions(+), 5 deletions(-)
diff -puN Documentation/vm/transhuge.txt~thp-change-split_huge_page_pmd-interface-v6 Documentation/vm/transhuge.txt
--- a/Documentation/vm/transhuge.txt~thp-change-split_huge_page_pmd-interface-v6
+++ a/Documentation/vm/transhuge.txt
@@ -276,7 +276,7 @@ unaffected. libhugetlbfs will also work
== Graceful fallback ==
Code walking pagetables but unware about huge pmds can simply call
-split_huge_page_pmd(vma, pmd, addr) where the pmd is the one returned by
+split_huge_page_pmd(vma, addr, pmd) where the pmd is the one returned by
pmd_offset. It's trivial to make the code transparent hugepage aware
by just grepping for "pmd_offset" and adding split_huge_page_pmd where
missing after pmd_offset returns the pmd. Thanks to the graceful
@@ -299,7 +299,7 @@ diff --git a/mm/mremap.c b/mm/mremap.c
return NULL;
pmd = pmd_offset(pud, addr);
-+ split_huge_page_pmd(vma, pmd, addr);
++ split_huge_page_pmd(vma, addr, pmd);
if (pmd_none_or_clear_bad(pmd))
return NULL;
diff -puN mm/huge_memory.c~thp-change-split_huge_page_pmd-interface-v6 mm/huge_memory.c
--- a/mm/huge_memory.c~thp-change-split_huge_page_pmd-interface-v6
+++ a/mm/huge_memory.c
@@ -2644,18 +2644,19 @@ void __split_huge_page_pmd(struct vm_are
{
struct page *page;
unsigned long haddr = address & HPAGE_PMD_MASK;
+ struct mm_struct *mm = vma->vm_mm;
BUG_ON(vma->vm_start > haddr || vma->vm_end < haddr + HPAGE_PMD_SIZE);
- spin_lock(&vma->vm_mm->page_table_lock);
+ spin_lock(&mm->page_table_lock);
if (unlikely(!pmd_trans_huge(*pmd))) {
- spin_unlock(&vma->vm_mm->page_table_lock);
+ spin_unlock(&mm->page_table_lock);
return;
}
page = pmd_page(*pmd);
VM_BUG_ON(!page_count(page));
get_page(page);
- spin_unlock(&vma->vm_mm->page_table_lock);
+ spin_unlock(&mm->page_table_lock);
split_huge_page(page);
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
origin.patch
thp-huge-zero-page-basic-preparation.patch
thp-zap_huge_pmd-zap-huge-zero-pmd.patch
thp-copy_huge_pmd-copy-huge-zero-page.patch
thp-do_huge_pmd_wp_page-handle-huge-zero-page.patch
thp-change_huge_pmd-make-sure-we-dont-try-to-make-a-page-writable.patch
thp-change-split_huge_page_pmd-interface.patch
thp-implement-splitting-pmd-for-huge-zero-page.patch
thp-implement-splitting-pmd-for-huge-zero-page-fix.patch
thp-implement-splitting-pmd-for-huge-zero-page-v6.patch
thp-setup-huge-zero-page-on-non-write-page-fault.patch
thp-setup-huge-zero-page-on-non-write-page-fault-fix.patch
thp-lazy-huge-zero-page-allocation.patch
thp-implement-refcounting-for-huge-zero-page.patch
thp-implement-refcounting-for-huge-zero-page-fix.patch
thp-vmstat-implement-hzp_alloc-and-hzp_alloc_failed-events.patch
thp-vmstat-implement-hzp_alloc-and-hzp_alloc_failed-events-v6.patch
thp-introduce-sysfs-knob-to-disable-huge-zero-page.patch
thp-avoid-race-on-multiple-parallel-page-faults-to-the-same-page.patch
asm-generic-mm-pgtable-consolidate-zero-page-helpers.patch
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