sysfs: file.c: use create_singlethread_workqueue()
Andrew Morton authored

We don't need a kernel thread per CPU for this application.
Acked-by: default avatarAlex Chiang <achiang@hp.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
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