tree ec7289f1c24ef1ff75c2fdd3cfb2c7ef66f8c44d
parent 7702ce40bc84a02e88aa20f95333df8cff5f9d37
author Andy Adamson <andros@netapp.com> 1245872265 -0400
committer J. Bruce Fields <bfields@citi.umich.edu> 1247608360 -0400

nfsd41: use globals for DRC limits

The version 4.1 DRC memory limit and tracking variables are server wide and
session specific. Replace struct svc_serv fields with globals.
Stop using the svc_serv sv_lock.

Add a spinlock to serialize access to the DRC limit management variables which
change on session creation and deletion (usage counter) or (future)
administrative action to adjust the total DRC memory limit.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>