From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Thu, 1 Oct 2015 15:36:38 +0000 (-0400)
Subject: NFS: Fix up page writeback accounting
X-Git-Tag: omap-for-v4.3/fixes-rc5~34^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40f90271a835478e5910dc84f32b8e25885419a4;p=pandora-kernel.git

NFS: Fix up page writeback accounting

Currently, we are crediting all the calls to nfs_writepages_callback()
(i.e. the nfs_writepages() callback) to nfs_writepage(). Aside from
being inconsistent with the behaviour of the equivalent readpage/readpages
accounting, this also means that we cannot distinguish between bulk writes
and single page writebacks (which confuses the 'nfsiostat -p' tool).

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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