diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2011-10-05 10:52:27 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-10-05 10:52:27 -0600 |
| commit | 9514a56753a8d379db36bed424588e1842f2bfcc (patch) | |
| tree | d13cdfcd9473f521c3b108770dba57e81e557a30 /mm/mempolicy.c | |
| parent | 4cd7f7a31178ff8a15ad2bc1258b9b2bf2cf51a4 (diff) | |
| parent | 6add6967a4a57e2156b96e62f28bcbe1901d16c1 (diff) | |
Merge branch 'for-grant' of git://git.jdl.com/software/linux-3.0 into devicetree/next
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 8b57173c1dd5..9c51f9f58cac 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -636,7 +636,6 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, struct vm_area_struct *prev; struct vm_area_struct *vma; int err = 0; - pgoff_t pgoff; unsigned long vmstart; unsigned long vmend; @@ -649,9 +648,9 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, vmstart = max(start, vma->vm_start); vmend = min(end, vma->vm_end); - pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT); prev = vma_merge(mm, prev, vmstart, vmend, vma->vm_flags, - vma->anon_vma, vma->vm_file, pgoff, new_pol); + vma->anon_vma, vma->vm_file, vma->vm_pgoff, + new_pol); if (prev) { vma = prev; next = vma->vm_next; @@ -1412,7 +1411,9 @@ asmlinkage long compat_sys_get_mempolicy(int __user *policy, err = sys_get_mempolicy(policy, nm, nr_bits+1, addr, flags); if (!err && nmask) { - err = copy_from_user(bm, nm, alloc_size); + unsigned long copy_size; + copy_size = min_t(unsigned long, sizeof(bm), alloc_size); + err = copy_from_user(bm, nm, copy_size); /* ensure entire bitmap is zeroed */ err |= clear_user(nmask, ALIGN(maxnode-1, 8) / 8); err |= compat_put_bitmap(nmask, bm, nr_bits); |