tree 43d0c0de69e2d95331f62e1150dcfab70f5ec5b2
parent b4019c0e219bb1301865f8b2efedb4773526ed91
author Trond Myklebust <trond.myklebust@primarydata.com> 1422125677 -0500
committer Trond Myklebust <trond.myklebust@primarydata.com> 1422143208 -0500

NFSv4.1: Optimise layout return-on-close

Optimise the layout return on close code by ensuring that

1) Add a check for whether we hold a layout before taking any spinlocks
2) Only take the spin lock once
3) Use nfs_state->state to speed up open file checks

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>