tree f919a71660f25f7d50c927df06df0d265cff2524
parent 9b55669c14212f89dba39a2d8e00c1ec1d44c1ec
author Herbert Xu <herbert@gondor.apana.org.au> 1422995602 +1100
committer David S. Miller <davem@davemloft.net> 1423110892 -0800

rhashtable: Fix potential crash on destroy in rhashtable_shrink

The current being_destroyed check in rhashtable_expand is not
enough since if we start a shrinking process after freeing all
elements in the table that's also going to crash.

This patch adds a being_destroyed check to the deferred worker
thread so that we bail out as soon as we take the lock.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>