NFS: nfs_set_pgio_error sometimes misses errors
authorTrond Myklebust <trond.myklebust@primarydata.com>
Mon, 17 Aug 2015 17:57:07 +0000 (12:57 -0500)
committerTrond Myklebust <trond.myklebust@primarydata.com>
Mon, 17 Aug 2015 18:05:03 +0000 (13:05 -0500)
commite9ae58aeee8842a50f7e199d602a5ccb2e41a95f
treec7a00fc13d2c4eac3a8eb03238301615a9f8e0b2
parentefcbc04e16dfa95fef76309f89710dd1d99a5453
NFS: nfs_set_pgio_error sometimes misses errors

We should ensure that we always set the pgio_header's error field
if a READ or WRITE RPC call returns an error. The current code depends
on 'hdr->good_bytes' always being initialised to a large value, which
is not always done correctly by callers.
When this happens, applications may end up missing important errors.

Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
fs/nfs/pagelist.c