linux-kernel - RE: [RFC PATCH 1/1] mm: provide one common K(x) macro

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Date:   Thu, 2 Sep 2021 14:52:12 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Michal Hocko' <mhocko@...e.com>,
        Oleksandr Natalenko <oleksandr@...alenko.name>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Matthew Wilcox <willy@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: RE: [RFC PATCH 1/1] mm: provide one common K(x) macro

From: Michal Hocko
> Sent: 01 September 2021 12:11
> 
> On Wed 01-09-21 12:50:40, Oleksandr Natalenko wrote:
> [...]
> > ```
> > 31 files changed, 104 insertions(+), 90 deletions(-)
> > ```
> >
> > which is not that horrible.
> 
> Still a lot of churn to my taste for something that is likely a matter
> of personal preferences and taste. Consider additional costs as well.
> E.g. go over additional git blame steps to learn why the code has been
> introduced, review bandwith etc...

Not to mention the time taken by someone scan-reading the
code who has to go and find the definition of K() just
to see what it does.

A more descriptive name (eg PAGES_TO_KB) might save that.
but is it worth it?

	David

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