tree c62632b2a0a49df114283f10764244c1b1b5f506
parent 5046791417dcac1ba126b77b8062af15a2f0b8e1
author Trond Myklebust <Trond.Myklebust@netapp.com> 1149860427 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1149860427 -0400

NLM: Fix reclaim races

Currently it is possible for a task to remove its locks at the same time as
the NLM recovery thread is trying to recover them. This quickly leads to an
Oops.
Protect the locks using an rw semaphore while they are being recovered.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>