From: Arun Bharadwaj <arun@linux.vnet.ibm.com>
Date: Thu, 18 Nov 2010 10:36:43 +0000 (+0000)
Subject: Pure nfs client performance using odirect.
X-Git-Tag: v2.6.37-rc4~15^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b47d19de2c714020ba8f5545a6e7d4968f37eb45;p=pandora-kernel.git

Pure nfs client performance using odirect.

When an application opens a file with O_DIRECT flag, if the size of
the data that is written is equal to wsize, the client sends a
WRITE RPC with stable flag set to UNSTABLE followed by a single
COMMIT RPC rather than sending a single WRITE RPC with the stable
flag set to FILE_SYNC. This a bug.

Patch to fix this.

Signed-off-by: Arun R Bharadwaj <arun@linux.vnet.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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