nfs41: add a helper to mark layout for return
authorPeng Tao <tao.peng@primarydata.com>
Fri, 5 Sep 2014 16:53:23 +0000 (00:53 +0800)
committerTom Haynes <loghyr@primarydata.com>
Tue, 3 Feb 2015 19:06:41 +0000 (11:06 -0800)
commit016256df3a7e9eeb3f4dea5ccd0e21a0b63841eb
tree98a9c9596f3febafdbaeff99e6912f8b295dd897
parentf40eb5d044e2eea3f866eeeeb45ca30753773cda
nfs41: add a helper to mark layout for return

It marks all matching layout segments as NFS_LSEG_LAYOUTRETURN,
which is an indicator for pnfs_put_lseg() to send layoutreturn,
and also prevents pnfs_update_layout() from using the returning
segments. Once it is set, it never gets cleared.

It also sets proper io failure bit so that pnfs path can be retried
after PNFS_LAYOUTGET_RETRY_TIMEOUT second.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
fs/nfs/pnfs.c
fs/nfs/pnfs.h