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authorTejun Heo <tj@kernel.org>2014-02-07 13:32:07 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-07 16:08:57 -0800
commitfa4cd451cceb77e97432b91fcf50a7e4a7361e29 (patch)
tree5e5740ea38ebe390cc4f054e9fd5426003dcf46c /README
parent3eef34ad7dc369b7183ec383908aff3da2f6e5ec (diff)
sysfs, kobject: add sysfs wrapper for kernfs_enable_ns()
Currently, kobject is invoking kernfs_enable_ns() directly. This is fine now as sysfs and kernfs are enabled and disabled together. If sysfs is disabled, kernfs_enable_ns() is switched to dummy implementation too and everything is fine; however, kernfs will soon have its own config option CONFIG_KERNFS and !SYSFS && KERNFS will be possible, which can make kobject call into non-dummy kernfs_enable_ns() with NULL kernfs_node pointers leading to an oops. Introduce sysfs_enable_ns() which is a wrapper around kernfs_enable_ns() so that it can be made a noop depending only on CONFIG_SYSFS regardless of the planned CONFIG_KERNFS. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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