Re: DEFINE_IDA causing memory leaks? (was Re: [PATCH 1/2] virtio: fix memory leak of virtio ida cache layers)

[Tejun Heo]

Hello,

On Thu, Sep 17, 2015 at 09:48:37AM -0700, James Bottomley wrote:
> Well, there's an easy fix for that.  We could have ida_remove() actually
> free the bitmap and not cache it if it's the last layer.  That way ida
> would naturally empty and we wouldn't need a destructor.   Tejun, would
> that work?

Yeah, that definitely is one way to go about it.  It kinda muddles the
purpose of ida_destroy() tho.  I suppose we can rename it to
idr_remove_all() and then do the same to idr.  I'm not particularly
objecting to all that but what's wrong with just calling idr_destroy()
on exit paths?  If missing the call in modules is an issue, maybe we
can just annotate idr/ida with debugobj?

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/