On Thu, 19 Jan 2012, Eric W. Biederman wrote:

Oh.  I see.  The problem is calling kobject_uevent (which happens to
live in slabs sysfs_slab_add) with a lock held.  And kobject_uevent
makes a blocking call to userspace.

No locks held seems to be a good policy on that one.

Well we can just remove that call to kobject_uevent instead then. Does it
do anything useful? Cannot remember why we put that in there.

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