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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-08-05 16:04:47 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-14 22:59:08 -0700
commit4662ffcbe30f95deeae95a7009faa54e1209b466 (patch)
tree26b257048e12e06f105e8f3db0b964906581d530 /include
parent533a54ffb012864cccd6aad6917741624c666dc1 (diff)
downloadvexpress-lsk-4662ffcbe30f95deeae95a7009faa54e1209b466.tar.gz
SUNRPC: If the rpcbind channel is disconnected, fail the call to unregister
commit 786615bc1ce84150ded80daea6bd9f6297f48e73 upstream. If rpcbind causes our connection to the AF_LOCAL socket to close after we've registered a service, then we want to be careful about reconnecting since the mount namespace may have changed. By simply refusing to reconnect the AF_LOCAL socket in the case of unregister, we avoid the need to somehow save the mount namespace. While this may lead to some services not unregistering properly, it should be safe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Nix <nix@esperi.org.uk> Cc: Jeff Layton <jlayton@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sunrpc/sched.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 84ca436b76c..9faf0f49199 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -130,6 +130,7 @@ struct rpc_task_setup {
#define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */
#define RPC_TASK_SENT 0x0800 /* message was sent */
#define RPC_TASK_TIMEOUT 0x1000 /* fail with ETIMEDOUT on timeout */
+#define RPC_TASK_NOCONNECT 0x2000 /* return ENOTCONN if not connected */
#define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC)
#define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER)