From: Peng Tao <bergwolf@gmail.com>
Date: Thu, 23 Aug 2012 16:27:48 +0000 (+0800)
Subject: NFSv41: fix DIO write_io calculation
X-Git-Tag: v3.7-rc1~58^2~40
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7acdb026818455638543b04b68d4a580c367fba8;p=pandora-kernel.git

NFSv41: fix DIO write_io calculation

pnfs_within_mdsthreshold() is called inside pg_init. We need to set
read_io/write_io before that. Otherwise we fail pnfs_within_mdsthreshold()
and IO goes to MDS.
A simple test case:
dd if=foo of=/mnt/pnfs/bar bs=10M count=1 oflag=direct

Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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