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| author | Jens Axboe <axboe@kernel.dk> | 2012-07-30 09:03:10 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-07-30 09:03:10 +0200 |
| commit | 72ea1f74fcdf874cca6d2c0962379523bbd99e2c (patch) | |
| tree | 4c67be6c73356086ff44ef1b8b1c9479702689ca /mm/memory.c | |
| parent | b1af9be5ef77898c05667bb9dbf3b180d91d3292 (diff) | |
| parent | a73ff3231df59a4b92ccd0dd4e73897c5822489b (diff) | |
Merge branch 'for-jens' of git://git.drbd.org/linux-drbd into for-3.6/drivers
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index 1b7dc662bf9..2466d125023 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1225,7 +1225,15 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb, next = pmd_addr_end(addr, end); if (pmd_trans_huge(*pmd)) { if (next - addr != HPAGE_PMD_SIZE) { - VM_BUG_ON(!rwsem_is_locked(&tlb->mm->mmap_sem)); +#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 split_huge_page_pmd(vma->vm_mm, pmd); } else if (zap_huge_pmd(tlb, vma, pmd, addr)) goto next; @@ -1366,7 +1374,7 @@ void unmap_vmas(struct mmu_gather *tlb, /** * zap_page_range - remove user pages in a given range * @vma: vm_area_struct holding the applicable pages - * @address: starting address of pages to zap + * @start: starting address of pages to zap * @size: number of bytes to zap * @details: details of nonlinear truncation or shared cache invalidation * |