diff options
| author | Michel Lespinasse <[email protected]> | 2012-10-08 16:30:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2012-10-09 16:22:28 +0900 |
| commit | ca42b26ab285edc5ee3f9faa48379d258db53c35 (patch) | |
| tree | 4a9d68d4d730474dde75b1ffff106d7e3442aef1 /tools/perf/scripts/python | |
| parent | 227e4047488d3ee0173a914275a7fd207ad51e5b (diff) | |
mm: fix potential anon_vma locking issue in mprotect()
Fix an anon_vma locking issue in the following situation:
- vma has no anon_vma
- next has an anon_vma
- vma is being shrunk / next is being expanded, due to an mprotect call
We need to take next's anon_vma lock to avoid races with rmap users (such
as page migration) while next is being expanded.
Signed-off-by: Michel Lespinasse <[email protected]>
Reviewed-by: Andrea Arcangeli <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions