From: Wu Fengguang <fengguang.wu@intel.com>
Date: Tue, 26 Jul 2011 00:12:37 +0000 (-0700)
Subject: writeback: account NR_WRITTEN at IO completion time
X-Git-Tag: v3.1-rc1~241^2~68
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99b12e3d882bc7ebdfe0de381dff3b16d21c38f7;p=pandora-kernel.git

writeback: account NR_WRITTEN at IO completion time

NR_WRITTEN is now accounted at block IO enqueue time, which is not very
accurate as to common understanding.  This moves NR_WRITTEN accounting to
the IO completion time and makes it more consistent with BDI_WRITTEN,
which is used for bandwidth estimation.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Michael Rubin <mrubin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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