Re: ext2/zram issue [was: Linux 5.19]

[Sergey Senozhatsky]

On (22/08/09 14:45), Jiri Slaby wrote:
> On 09. 08. 22, 14:35, Jiri Slaby wrote:
> > But the installer is different. It just creates memory pressure, yet,
> > reclaim works well and is able to find memory and go on. I would say
> > atomic vs non-atomic retry in the original (pre-5.19) approach makes the
> > difference.
> 
> Sorry, I meant no-direct-reclaim (5.19) vs direct-reclaim (pre-5.19).

Sure, I understood.

This somehow makes me scratch my head and ask if we really want to
continue using per-CPU steams. We previously (many years ago) had
a list of idle compression streams, which would do compression in
preemptible context and we would have only one zs_malloc handle
allocation path, which would do direct reclaim (when needed)