tree e7fd48beabf6536fd8ff69fdd6d39d609558803e
parent fe237ed7872509e57094c231d8c1321ed06341c8
author Trond Myklebust <Trond.Myklebust@netapp.com> 1386196763 -0500
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074766 +0200

NFSv4: OPEN must handle the NFS4ERR_IO return code correctly

commit c7848f69ec4a8c03732cde5c949bd2aa711a9f4b upstream.

decode_op_hdr() cannot distinguish between an XDR decoding error and
the perfectly valid errorcode NFS4ERR_IO. This is normally not a
problem, but for the particular case of OPEN, we need to be able
to increment the NFSv4 open sequence id when the server returns
a valid response.

Reported-by: J Bruce Fields <bfields@fieldses.org>
Link: http://lkml.kernel.org/r/20131204210356.GA19452@fieldses.org
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>