tree b5049a6786fba4c05e71c34944d3fe7280433c28
parent 7175fe90153e6375082d65884fbb41ab3bbb4901
author Scott Mayhew <smayhew@redhat.com> 1350408139 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1351715185 -0400

nfsv3: Make v3 mounts fail with ETIMEDOUTs instead EIO on mountd timeouts

In very busy v3 environment, rpc.mountd can respond to the NULL
procedure but not the MNT procedure in a timely manner causing
the MNT procedure to time out. The problem is the mount system
call returns EIO which causes the mount to fail, instead of
ETIMEDOUT, which would cause the mount to be retried.

This patch sets the RPC_TASK_SOFT|RPC_TASK_TIMEOUT flags to
the rpc_call_sync() call in nfs_mount() which causes
ETIMEDOUT to be returned on timed out connections.

Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org