diff options
| author | Herbert Xu <[email protected]> | 2015-03-12 22:07:49 +1100 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-03-12 23:02:30 -0400 |
| commit | 9497df88ab5567daa001829051c5f87161a81ff0 (patch) | |
| tree | 4631c01eb33d6f8bbcf018f47d31d19ad4fac5a4 /tools/perf/scripts/python/futex-contention.py | |
| parent | 5ff0d16aac91857246770f477942878a4d4f31f7 (diff) | |
rhashtable: Fix reader/rehash race
There is a potential race condition between readers and the rehasher.
In particular, the rehasher could have started a rehash while the
reader finishes a scan of the old table but fails to see the new
table pointer.
This patch closes this window by adding smp_wmb/smp_rmb.
Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/futex-contention.py')
0 files changed, 0 insertions, 0 deletions