Rick Macklem b07bc39a23 Avoid the overhead of acquiring a lock in nfsrv_checkgetattr() when ... there are no write delegations issued. manu@ reported on the freebsd-current@ mailing list that there was a significant performance hit in nfsrv_checkgetattr() caused by the acquisition/release of a state lock, even when there were no write delegations issued. This patch add a count of outstanding issued write delegations to the NFSv4 server. This count allows nfsrv_checkgetattr() to return without acquiring any lock when the count is 0, avoiding the performance hit for the case where no write delegations are issued. Reported by: manu Reviewed by: kib MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D13327		2017-12-04 21:50:27 +00:00
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nfs_fha_new.c	sys/fs: further adoption of SPDX licensing ID tags.	2017-11-27 15:15:37 +00:00
nfs_fha_new.h	sys/fs: further adoption of SPDX licensing ID tags.	2017-11-27 15:15:37 +00:00
nfs_nfsdcache.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
nfs_nfsdkrpc.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
nfs_nfsdport.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
nfs_nfsdserv.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
nfs_nfsdsocket.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
nfs_nfsdstate.c	Avoid the overhead of acquiring a lock in nfsrv_checkgetattr() when	2017-12-04 21:50:27 +00:00
nfs_nfsdsubs.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00