Re: [PATCH v3 09/30] block: Pre-allocate zone write plugs

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On Thu, Mar 28, 2024 at 03:18:46PM +0900, Damien Le Moal wrote:
> > Yes, bt it can use kfree_rcu which doesn't need the rcu_head in the
> > zwplug.
> 
> Unfortunately, it does. kfree_rcu() is a 2 argument macro: address and rcu head
> to use... The only thing we could drop from the plug struct is the gendisk pointer.

It used to have a one argument version.  Oh, that recently got renamed
to kfree_rcu_mightsleep.  Which seems like a somewhat odd name, but
it's still there and what i meant.





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