From 7b5af5cffce569298b1d03af1ddf1dc43570ab42 Mon Sep 17 00:00:00 2001
From: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Date: Thu, 28 Aug 2014 17:14:58 +0900
Subject: [PATCH] cfq-iosched: Add comments on update timing of weight

Explain that weight has to be updated on activation.
This complements previous fix e15693ef18e1 ("cfq-iosched: Fix wrong
children_weight calculation").

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Reading git-format-patch failed