Re: [PATCHSET driver-core-next] kernfs, sysfs, driver-core:implement synchronous self-removal

[Greg KH]

On Tue, Jan 07, 2014 at 04:41:19PM -0500, Tejun Heo wrote:
> On Tue, Jan 07, 2014 at 12:59:38PM -0500, Tejun Heo wrote:
> > This patchset improves kernfs removal path and implements
> > kernfs_remove_self() which is to be called from an on-going kernfs
> > operation and removes the self node.  The function can be called
> > concurrently and only one will return %true and all others will wait
> > until the winner's file operation is complete (not the
> > kernfs_remove_self() call itself but the enclosing file operation
> > which invoked the function).  This ensures that if there are multiple
> > concurrent "echo 1 > asdf/delete", all of them would finish only after
> > the whole store_delete() method is complete.
> 
> Heh, dang it.  Please ignore this posting.  I thought I could get away
> with this but apparently cgroup would need something a bit more
> flexible. :(

Ok, now dropped from my queue.

greg k-h
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