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| author | Ingo Molnar <mingo@elte.hu> | 2011-05-10 17:05:24 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-10 17:05:45 +0200 |
| commit | 932fed4e2e42c3d730c01bb63b1c4f812c533d5b (patch) | |
| tree | 11b1afac3a40d253cdb905c42901edfaae5e196e /mm/mmap.c | |
| parent | 57d524154ffe99d27fb55e0e30ddbad9f4c35806 (diff) | |
| parent | 693d92a1bbc9e42681c42ed190bd42b636ca876f (diff) | |
| download | lwn-932fed4e2e42c3d730c01bb63b1c4f812c533d5b.tar.gz lwn-932fed4e2e42c3d730c01bb63b1c4f812c533d5b.zip | |
Merge commit 'v2.6.39-rc7' into perf/core
Merge reason: pull in the latest fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index e27e0cf0de03..772140c53ab1 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1767,10 +1767,13 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address) size = address - vma->vm_start; grow = (address - vma->vm_end) >> PAGE_SHIFT; - error = acct_stack_growth(vma, size, grow); - if (!error) { - vma->vm_end = address; - perf_event_mmap(vma); + error = -ENOMEM; + if (vma->vm_pgoff + (size >> PAGE_SHIFT) >= vma->vm_pgoff) { + error = acct_stack_growth(vma, size, grow); + if (!error) { + vma->vm_end = address; + perf_event_mmap(vma); + } } } vma_unlock_anon_vma(vma); |