From: Wolfram Sang <wsa@the-dreams.de>
Date: Tue, 4 Nov 2014 11:01:41 +0000 (+0100)
Subject: sched/completion: Document when to use wait_for_completion_io_*()
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~162^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1bd5373357d3edc4b97548747d583c3efa484b3;p=pandora-kernel.git

sched/completion: Document when to use wait_for_completion_io_*()

As discussed in [1], accounting IO is meant for blkio only. Document that
so driver authors won't use them for device io.

 [1] http://thread.gmane.org/gmane.linux.drivers.i2c/20470

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1415098901-2768-1-git-send-email-wsa@the-dreams.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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