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author | Ingo Molnar <mingo@elte.hu> | 2012-01-08 12:31:24 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2012-01-08 12:31:24 +0100 |
commit | 636f0c70f2557e0819b50c74e31b4a027327015e (patch) | |
tree | 3a259ef26659dac92782651440091b9f5ab1a7f7 /mm/mempolicy.c | |
parent | Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core (diff) | |
parent | recordmcount: Fix handling of elf64 big-endian objects. (diff) | |
download | linux-dev-636f0c70f2557e0819b50c74e31b4a027327015e.tar.xz linux-dev-636f0c70f2557e0819b50c74e31b4a027327015e.zip |
Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core
Diffstat (limited to 'mm/mempolicy.c')
-rw-r--r-- | mm/mempolicy.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index adc395481813..c3fdbcb17658 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -636,6 +636,7 @@ 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; @@ -643,13 +644,21 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, if (!vma || vma->vm_start > start) return -EFAULT; + if (start > vma->vm_start) + prev = vma; + for (; vma && vma->vm_start < end; prev = vma, vma = next) { next = vma->vm_next; vmstart = max(start, vma->vm_start); vmend = min(end, vma->vm_end); + if (mpol_equal(vma_policy(vma), new_pol)) + continue; + + pgoff = vma->vm_pgoff + + ((vmstart - vma->vm_start) >> PAGE_SHIFT); prev = vma_merge(mm, prev, vmstart, vmend, vma->vm_flags, - vma->anon_vma, vma->vm_file, vma->vm_pgoff, + vma->anon_vma, vma->vm_file, pgoff, new_pol); if (prev) { vma = prev; |