The patch titled
Subject: mm: convert an open-coded VM_BUG_ON_VMA
has been added to the -mm tree. Its filename is
mm-convert-an-open-coded-vm_bug_on_vma.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-convert-an-open-coded-vm_bug_on_vma.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-convert-an-open-coded-vm_bug_on_vma.patch
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------------------------------------------------------
From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Subject: mm: convert an open-coded VM_BUG_ON_VMA
Spotted during PUD support review.
Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Reported-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff -puN mm/memory.c~mm-convert-an-open-coded-vm_bug_on_vma mm/memory.c
--- a/mm/memory.c~mm-convert-an-open-coded-vm_bug_on_vma
+++ a/mm/memory.c
@@ -1179,15 +1179,7 @@ static inline unsigned long zap_pmd_rang
next = pmd_addr_end(addr, end);
if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) {
if (next - addr != HPAGE_PMD_SIZE) {
-#ifdef CONFIG_DEBUG_VM
- if (!rwsem_is_locked(&tlb->mm->mmap_sem)) {
- pr_err("%s: mmap_sem is unlocked! addr=0x%lx end=0x%lx vma->vm_start=0x%lx vma->vm_end=0x%lx\n",
- __func__, addr, end,
- vma->vm_start,
- vma->vm_end);
- BUG();
- }
-#endif
+ VM_BUG_ON_VMA(!rwsem_is_locked(&tlb->mm->mmap_sem), vma);
split_huge_pmd(vma, pmd, addr);
} else if (zap_huge_pmd(tlb, vma, pmd, addr))
goto next;
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxxxx are
radix-tree-fix-race-in-gang-lookup.patch
hwspinlock-fix-race-between-radix-tree-insertion-and-lookup.patch
mm-convert-an-open-coded-vm_bug_on_vma.patch
mmfsdax-change-pmd_fault-to-huge_fault.patch
mm-add-support-for-pud-sized-transparent-hugepages.patch
procfs-add-support-for-puds-to-smaps-clear_refs-and-pagemap.patch
x86-add-support-for-pud-sized-transparent-hugepages.patch
dax-support-for-transparent-pud-pages.patch
ext4-support-for-pud-sized-transparent-huge-pages.patch
radix-tree-add-an-explicit-include-of-bitopsh.patch
radix-tree-test-harness.patch
radix_tree-tag-all-internal-tree-nodes-as-indirect-pointers.patch
radix_tree-loop-based-on-shift-count-not-height.patch
radix_tree-add-support-for-multi-order-entries.patch
radix_tree-add-radix_tree_dump.patch
btrfs-use-radix_tree_iter_retry.patch
mm-use-radix_tree_iter_retry.patch
radix-treeshmem-introduce-radix_tree_iter_next.patch
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