From 627f29f48158c3088cc55a25d8650cae455ff63b Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Sun, 1 Apr 2012 14:38:43 -0700
Subject: [PATCH] blkcg: drop blkiocg_file_write_u64()

blkiocg_file_write_u64() has single switch case.  Drop
blkiocg_file_write_u64(), rename blkio_weight_write() to
blkcg_set_weight() and use it directly for .write_u64 callback.

Signed-off-by: Tejun Heo <tj@kernel.org>
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