From: David Herrmann <dh.herrmann@googlemail.com>
Date: Sat, 17 Nov 2012 11:45:48 +0000 (+0100)
Subject: cuse: do not register multiple devices with identical names
X-Git-Tag: v3.8-rc5~22^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30783587b0f318b9e2e165f34cf5dfd9425a4904;p=pandora-kernel.git

cuse: do not register multiple devices with identical names

Sysfs doesn't allow two devices with the same name, but we register a
sysfs entry for each cuse device without checking for name collisions.
This extends the registration to first check whether the name was already
registered.

To avoid race-conditions between the name-check and linking the device, we
need to protect the whole registration with a mutex.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
---

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