tree d69e02a6fad26e4d746710a7b8dd2caa0047efed
parent baf6c2a44af02cf6f7cec1ff177189c78fc30f9a
author Andy Adamson <andros@netapp.com> 1340219013 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1342463845 -0400

NFSv4.1 mark layout when already returned

When the file layout driver is fencing a DS, _pnfs_return_layout can be
called mulitple times per inode due to in-flight i/o referencing lsegs on it's
plh_segs list.

Remember that LAYOUTRETURN has been called, and do not call it again.
Allow LAYOUTRETURNs after a subsequent LAYOUTGET.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>