tree fe27e8595c23a8966d3814ebc76dfb9aea17f3e9
parent d682e750ce14cfb3be655e6d492c77511e637228
author Jeff Layton <jlayton@primarydata.com> 1410554421 -0400
committer J. Bruce Fields <bfields@redhat.com> 1410985997 -0400

nfsd: set and test NFSD4_CLIENT_STABLE bit to reduce nfsdcltrack upcalls

The nfsdcltrack upcall doesn't utilize the NFSD4_CLIENT_STABLE flag,
which basically results in an upcall every time we call into the client
tracking ops.

Change it to set this bit on a successful "check" or "create" request,
and clear it on a "remove" request.  Also, check to see if that bit is
set before upcalling on a "check" or "remove" request, and skip
upcalling appropriately, depending on its state.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>