linux-kernel - Re: [PATCH v9 2/7] lib/stackdepot: Move stack_record struct definition into the header

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Date: Thu, 15 Feb 2024 10:33:15 +0100
From: Marco Elver <elver@...gle.com>
To: Vlastimil Babka <vbabka@...e.cz>
Cc: Oscar Salvador <osalvador@...e.de>, Andrew Morton <akpm@...ux-foundation.org>, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	Michal Hocko <mhocko@...e.com>, Andrey Konovalov <andreyknvl@...il.com>, 
	Alexander Potapenko <glider@...gle.com>
Subject: Re: [PATCH v9 2/7] lib/stackdepot: Move stack_record struct
 definition into the header

On Thu, 15 Feb 2024 at 10:30, Vlastimil Babka <vbabka@...e.cz> wrote:
>
> On 2/15/24 09:16, Marco Elver wrote:
> > On Wed, 14 Feb 2024 at 18:00, Oscar Salvador <osalvador@...e.de> wrote:
> >>
> >> In order to move the heavy lifting into page_owner code, this one
> >> needs to have access to the stack_record structure, which right now
> >> sits in lib/stackdepot.c.
> >> Move it to the stackdepot.h header so page_owner can access
> >> stack_record's struct fields.
> >>
> >> Signed-off-by: Oscar Salvador <osalvador@...e.de>
> >> Reviewed-by: Marco Elver <elver@...gle.com>
> >> Reviewed-by: Vlastimil Babka <vbabka@...e.cz>
> >> ---
>
> >>  #define DEPOT_POOLS_CAP 8192
> >> -/* The pool_index is offset by 1 so the first record does not have a 0 handle. */
> >> +/* The pool_index is offset by 1 so the first record does not have a 0 handle */
> >
> > Why this comment change? We lost the '.' -- for future reference, it'd
> > be good to ensure unnecessary changes don't creep into the diff. This
> > is just nitpicking,
>
> Agree with this part.
>
> > and I've already reviewed this change, so no need
> > to send a v+1.
>
> But confused by this remark. There is a number of nontrivial changes in the
> series from v8, and IIRC v8 was dropped from mm/ meanwhile, so a v+1 of the
> whole series is expected and not fixups. Which means including patches that
> were already reviewed. That's the usual process.

This is already v9. Of course, still need to look at rest of v9 and if
there are major changes needed then a v10 is needed.