Re: Is devm_* broken ?

[Tejun Heo <tj@kernel.org>]

Hello, Laurent.

On Tue, Jul 28, 2015 at 05:16:16PM +0300, Laurent Pinchart wrote:
> Using devm_kzalloc() in such a way has value though, and reverting drivers to 
> the pre-devm memory allocation code would make error handling and cleanup code 
> paths more complex again. Should we introduce a managed allocator for that 
> purpose that would have a lifespan explicitly handled by drivers ?

I don't know.  Sure, we can have memory allocations which are tied to
open file; however, the distinction between that and regular devm
resources, which can't linger on no matter what, would be subtle and
confusing.  IMHO, a better approach would be implmenting generic
revoke feature and sever open files on driver detach so that
everything can be shutdown then.

Thanks.

-- 
tejun