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Merge branch 'vm' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull munmap/truncate race fixes from Al Viro:
 "Fixes for racy use of unmap_vmas() on truncate-related codepaths"

* 'vm' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  VM: make zap_page_range() callers that act on a single VMA use separate helper
  VM: make unmap_vmas() return void
  VM: don't bother with feeding upper limit to tlb_finish_mmu() in exit_mmap()
  VM: make zap_page_range() return void
  VM: can't go through the inner loop in unmap_vmas() more than once...
  VM: unmap_page_range() can return void
This commit is contained in:
Linus Torvalds
2012-03-21 13:32:19 -07:00
parent 3556485f15 f5cc4eef99
commit 3a990a52f9
3 changed files with 84 additions and 58 deletions
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4
include/linux/mm.h
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@@ -893,9 +893,9 @@ struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
unsigned long size);
unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address,
void zap_page_range(struct vm_area_struct *vma, unsigned long address,
unsigned long size, struct zap_details *);
unsigned long unmap_vmas(struct mmu_gather *tlb,
void unmap_vmas(struct mmu_gather *tlb,
struct vm_area_struct *start_vma, unsigned long start_addr,
unsigned long end_addr, unsigned long *nr_accounted,
struct zap_details *);