From: Chuck Lever <cel@netapp.com>
Date: Mon, 20 Mar 2006 18:44:14 +0000 (-0500)
Subject: NFS: add I/O performance counters
X-Git-Tag: v2.6.17-rc1~667^2~81
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91d5b47023b608227d605d1e916b29dd0215bff7;p=pandora-kernel.git

NFS: add I/O performance counters

Invoke the byte and event counter macros where we want to count bytes and
events.

Clean-up: fix a possible NULL dereference in nfs_lock, and simplify
nfs_file_open.

Test-plan:
fsx and iozone on UP and SMP systems, with and without pre-emption.  Watch
for memory overwrite bugs, and performance loss (significantly more CPU
required per op).

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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