Re: [PATCH] async: Let kfree() out of the critical area of the lock

[Bart Van Assche]

On 9/26/19 4:06 AM, David Sterba wrote:
> On Thu, Sep 26, 2019 at 03:58:36PM +0800, Yunfeng Ye wrote:
> > The async_lock is big global lock, I think it's good to put kfree() outside
> > to keep the critical area as short as possible.
>
> Agreed, kfree is not always cheap. We had patches in btrfs moving kfree
> out of critical section(s) after causing softlockups due to increased lock
> contention.

The above would be a great addition for the commit description. Anyway:

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>