NFSv4.2: handle NFS-specific llseek errors
NFSv4.2: handle NFS-specific llseek errors

Handle NFS-specific llseek errors instead of letting them leak out to
userspace.

Reported-by: Benjamin Coddington <8448cf767486b00c07603be762726b9248f4b321@redhat.com>
Signed-off-by: J. Bruce Fields <51738506c1b2ccb0761f23bdc612c93babf738ea@redhat.com>
Signed-off-by: Trond Myklebust <cc958843532c615cbd4920e868f78c7985331a5a@primarydata.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs