Re: [PATCH 1/2] f2fs: add sysfs nodes to get discard information

[Chao Yu]

On 2021/8/16 10:42, 李扬韬 wrote:
> > > I've added new sysfs nodes to show discard stat since mount, which
> > > will help us analyze whether the performance problem is related to
> > > discard.
> > >
> > > issued_discard  - Shows the number of issued discard
> > > queued_discard  - Shows the number of cached discard cmd count
> > > discard_cmd_cnt - Shows the number of cached discard cmd count
> > > undiscard_blks  - Shows the number of undiscard blocks
> >
> > We have exported them in debugfs, can you use that?
> >
> > Thanks,
>
> But now Android is forbidden to open debugfs, and in fact we have not
> opened this configuration for a long time.

Weren't them be used for debug purpose? can you please explain more about
your use case?

Thanks,

> Thx,
> Yangtao