tree c058217a47c51021d97454639ed0f7480c73fe6a
parent cf9e5a73aaff0204801dd19cb4bd91d32f32026a
author Tejun Heo <tj@kernel.org> 1385763549 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1385779288 -0800

sysfs, kernfs: implement kernfs_ns_enabled()

fs/sysfs/symlink.c::sysfs_delete_link() tests @sd->s_flags for
SYSFS_FLAG_NS.  Let's add kernfs_ns_enabled() so that sysfs doesn't
have to test sysfs_dirent flag directly.  This makes things tidier for
kernfs proper too.

This is purely cosmetic.

v2: To avoid possible NULL deref, use noop dummy implementation which
    always returns false when !CONFIG_SYSFS.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>