Re: [PATCH 2/2] block: hold queue lock while iterating in diskstats_show

[Christoph Hellwig]

On Thu, Jan 20, 2022 at 03:01:26PM +0100, Daniel Wagner wrote:
> On Thu, Jan 20, 2022 at 09:51:18PM +0800, Ming Lei wrote:
> > Then Can you figure out where blk_mq_queue_tag_busy_iter+0x1e4 points to
> > in source code? And what is NULL pointer?
> 
> Here we go:
> 
> /usr/src/debug/kernel-default-5.3.18-59.27.1.x86_64/linux-5.3/linux-obj/../include/linux/sbitmap.h: 249

That looks quite old.  How does this look on mainline?