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authorTrond Myklebust <Trond.Myklebust@netapp.com>2011-05-31 23:15:34 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-06-15 19:24:27 +0400
commit0b760113a3a155269a3fba93a409c640031dd68f (patch)
tree699dc3e0ebe2df11b0c67045c046deafdb56282d /fs/lockd
parent9e3bd4e24e94d60d2e0762e919aab6c9a7fc0c5b (diff)
downloadlinux-0b760113a3a155269a3fba93a409c640031dd68f.tar.xz
NLM: Don't hang forever on NLM unlock requests
If the NLM daemon is killed on the NFS server, we can currently end up hanging forever on an 'unlock' request, instead of aborting. Basically, if the rpcbind request fails, or the server keeps returning garbage, we really want to quit instead of retrying. Tested-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
Diffstat (limited to 'fs/lockd')
-rw-r--r--fs/lockd/clntproc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index adb45ec9038c..e374050a911c 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -708,7 +708,13 @@ static void nlmclnt_unlock_callback(struct rpc_task *task, void *data)
if (task->tk_status < 0) {
dprintk("lockd: unlock failed (err = %d)\n", -task->tk_status);
- goto retry_rebind;
+ switch (task->tk_status) {
+ case -EACCES:
+ case -EIO:
+ goto die;
+ default:
+ goto retry_rebind;
+ }
}
if (status == NLM_LCK_DENIED_GRACE_PERIOD) {
rpc_delay(task, NLMCLNT_GRACE_WAIT);