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Groups > linux.kernel > #1301864
| From | Matthew Wilcox <matthew.r.wilcox@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 1/8] mm: Convert an open-coded VM_BUG_ON_VMA |
| Date | 2016-01-05 19:40 +0100 |
| Message-ID | <qNEGv-6GR-39@gated-at.bofh.it> (permalink) |
| References | <qNEGu-6GR-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Matthew Wilcox <willy@linux.intel.com>
Spotted during PUD support review.
Reported-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
---
mm/memory.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 416b129..8c6392c 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1178,15 +1178,7 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb,
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;
--
2.6.4
--
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[PATCH v2 0/8] Support for transparent PUD pages for DAX files Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 3/8] mm: Add optional support for PUD-sized transparent hugepages Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 5/8] procfs: Add support for PUDs to smaps, clear_refs and pagemap Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 8/8] ext4: Support for PUD-sized transparent huge pages Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 7/8] dax: Support for transparent PUD pages Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 1/8] mm: Convert an open-coded VM_BUG_ON_VMA Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 6/8] x86: Add support for PUD-sized transparent hugepages Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100 [PATCH v2 2/8] mm,fs,dax: Change ->pmd_fault to ->huge_fault Matthew Wilcox <matthew.r.wilcox@intel.com> - 2016-01-05 19:40 +0100
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