| commit | 9497df88ab5567daa001829051c5f87161a81ff0 | [log] [tgz] |
|---|---|---|
| author | Herbert Xu <herbert@gondor.apana.org.au> | Thu Mar 12 22:07:49 2015 +1100 |
| committer | David S. Miller <davem@davemloft.net> | Thu Mar 12 23:02:30 2015 -0400 |
| tree | 4631c01eb33d6f8bbcf018f47d31d19ad4fac5a4 | |
| 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 <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>