tree 9bff3d864babadc95af859903a2b16fd888c0f36
parent 183d9e7b112aaed0d19c16ffcf0f8c3a86dc71e0
author Jeff Layton <jlayton@poochiereds.net> 1463502528 -0400
committer Anna Schumaker <Anna.Schumaker@Netapp.com> 1463514493 -0400

pnfs: make pnfs_layout_process more robust

It can return NULL if layoutgets are blocked currently. Fix it to return
-EAGAIN in that case, so we can properly handle it in pnfs_update_layout.

Also, clean up and simplify the error handling -- eliminate "status" and
just use "lseg".

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>