From: Andrea Righi <righi.andrea@gmail.com>
Date: Sat, 26 Jul 2008 22:22:27 +0000 (-0700)
Subject: task IO accounting: correctly account threads IO statistics
X-Git-Tag: v2.6.27-rc1~79
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2d002dba5a8a4c0c3ec96fd1ff3c9def6bd71a1;p=pandora-kernel.git

task IO accounting: correctly account threads IO statistics

Oleg Nesterov points out that we should check that the task is still alive
before we iterate over the threads.  This patch includes a fixup for this.

Also simplify do_io_accounting() implementation.

Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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