Re: [PATCH v6 3/3] mm: vmscan: refactor updating current->reclaim_state

From: Dave Chinner
Date: Thu Apr 13 2023 - 17:01:06 EST


On Thu, Apr 13, 2023 at 04:29:43AM -0700, Yosry Ahmed wrote:
> On Thu, Apr 13, 2023 at 4:21 AM David Hildenbrand <david@xxxxxxxxxx> wrote:
> >
> > On 13.04.23 12:40, Yosry Ahmed wrote:
> > > During reclaim, we keep track of pages reclaimed from other means than
> > > LRU-based reclaim through scan_control->reclaim_state->reclaimed_slab,
> > > which we stash a pointer to in current task_struct.
> > >
> > > However, we keep track of more than just reclaimed slab pages through
> > > this. We also use it for clean file pages dropped through pruned inodes,
> > > and xfs buffer pages freed. Rename reclaimed_slab to reclaimed, and add
> >
> > Would "reclaimed_non_lru" be more expressive? Then,
> >
> > mm_account_reclaimed_pages() -> mm_account_non_lru_reclaimed_pages()
> >
> >
> > Apart from that LGTM.
>
> Thanks!
>
> I suck at naming things. If you think "reclaimed_non_lru" is better,
> then we can do that. FWIW mm_account_reclaimed_pages() was taken from
> a suggestion from Dave Chinner. My initial version had a terrible
> name: report_freed_pages(), so I am happy with whatever you see fit.
>
> Should I re-spin for this or can we change it in place?

I don't care for the noise all the bikeshed painting has generated
for a simple change like this. If it's a fix for a bug, and the
naming is good enough, just merge it already, ok?

-Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx