Re: files_lock deadlock?

[Martin Wilck <martin.wilck@fujitsu-siemens.com>]

Arjan van de Ven wrote:

> I disagree, it's a performance cost.
> It's a lot easier to make remove_proc_entry() a might_sleep().. (I'm
> surprised it isn't already btw given that it's vfs related and the vfs
> is mostly semaphore based)
Well enough. But to my understanding using spin_lock implies that we can 
_prove_ the lock won't be taken in softirq context, and that we will be 
able to prevent new such paths to be introduced in the future. I wonder 
if that's possible for this lock.
Regards,
Martin

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