Messages in this thread | | | Date | Tue, 28 Jul 2015 11:22:25 -0400 | From | Tejun Heo <> | Subject | Re: Is devm_* broken ? |
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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
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