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From: Dave Chinner <david@fromorbit.com>
To: Yang Shi <shy828301@gmail.com>
Cc: Roman Gushchin <guro@fb.com>, Kirill Tkhai <ktkhai@virtuozzo.com>,
	Shakeel Butt <shakeelb@google.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Michal Hocko <mhocko@suse.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux MM <linux-mm@kvack.org>,
	Linux FS-devel Mailing List <linux-fsdevel@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [v2 PATCH 6/9] mm: vmscan: use per memcg nr_deferred of shrinker
Date: Wed, 16 Dec 2020 10:48:01 +1100	[thread overview]
Message-ID: <20201215234801.GT3913616@dread.disaster.area> (raw)
In-Reply-To: <CAHbLzkpgFO_WmxRwmSa_eb4KrQ3WXmHT0kOfn85HJAsfqvyC1Q@mail.gmail.com>

On Tue, Dec 15, 2020 at 02:27:18PM -0800, Yang Shi wrote:
> On Mon, Dec 14, 2020 at 6:46 PM Dave Chinner <david@fromorbit.com> wrote:
> >
> > On Mon, Dec 14, 2020 at 02:37:19PM -0800, Yang Shi wrote:
> > > Use per memcg's nr_deferred for memcg aware shrinkers.  The shrinker's nr_deferred
> > > will be used in the following cases:
> > >     1. Non memcg aware shrinkers
> > >     2. !CONFIG_MEMCG
> > >     3. memcg is disabled by boot parameter
> > >
> > > Signed-off-by: Yang Shi <shy828301@gmail.com>
> >
> > Lots of lines way over 80 columns.
> 
> I thought that has been lifted to 100 columns.

Documentation/process/coding-style.rst still says:

"The preferred limit on the length of a single line is 80 columns."

checkpatch might not warn about > 80 columns anymore, but if the
file you are modifying is almost entirely 80 columns in width, then
by default changes to that file should also stay within 80 columns.

I mostly consider using checkpatch to enforce coding styles to be
harmful....

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

  reply	other threads:[~2020-12-16  0:06 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-14 22:37 [RFC v2 PATCH 0/9] Make shrinker's nr_deferred memcg aware Yang Shi
2020-12-14 22:37 ` [v2 PATCH 1/9] mm: vmscan: use nid from shrink_control for tracepoint Yang Shi
2020-12-14 22:37 ` [v2 PATCH 2/9] mm: memcontrol: use shrinker_rwsem to protect shrinker_maps allocation Yang Shi
2020-12-15  2:09   ` Dave Chinner
2020-12-15 13:53     ` Johannes Weiner
2020-12-15 21:59       ` Dave Chinner
2020-12-16 13:17         ` Kirill Tkhai
2020-12-16 19:12         ` Johannes Weiner
2020-12-16 21:56           ` Yang Shi
2020-12-16 21:56             ` Yang Shi
2020-12-16 19:39         ` Roman Gushchin
2020-12-15 14:07   ` Johannes Weiner
2020-12-15 20:32     ` Yang Shi
2020-12-15 20:32       ` Yang Shi
2020-12-14 22:37 ` [v2 PATCH 3/9] mm: vmscan: guarantee shrinker_slab_memcg() sees valid shrinker_maps for online memcg Yang Shi
2020-12-15  2:04   ` Dave Chinner
2020-12-15 12:38   ` Johannes Weiner
2020-12-15 12:58     ` Kirill Tkhai
2020-12-15 16:45       ` Johannes Weiner
2020-12-15 17:14   ` Johannes Weiner
2020-12-15 20:31     ` Yang Shi
2020-12-28 20:03       ` Yang Shi
2020-12-28 20:03         ` Yang Shi
2020-12-14 22:37 ` [v2 PATCH 4/9] mm: vmscan: use a new flag to indicate shrinker is registered Yang Shi
2020-12-14 22:37 ` [v2 PATCH 5/9] mm: memcontrol: add per memcg shrinker nr_deferred Yang Shi
2020-12-15  2:22   ` Dave Chinner
2020-12-15 14:45     ` Johannes Weiner
2020-12-15 21:57       ` Yang Shi
2020-12-15 21:57         ` Yang Shi
2020-12-14 22:37 ` [v2 PATCH 6/9] mm: vmscan: use per memcg nr_deferred of shrinker Yang Shi
2020-12-15  2:46   ` Dave Chinner
2020-12-15 22:27     ` Yang Shi
2020-12-15 22:27       ` Yang Shi
2020-12-15 23:48       ` Dave Chinner [this message]
2020-12-14 22:37 ` [v2 PATCH 7/9] mm: vmscan: don't need allocate shrinker->nr_deferred for memcg aware shrinkers Yang Shi
2020-12-15  3:05   ` Dave Chinner
2020-12-15 23:07     ` Yang Shi
2020-12-15 23:07       ` Yang Shi
2020-12-18  0:56       ` Yang Shi
2020-12-18  0:56         ` Yang Shi
2020-12-18  1:09         ` Dave Chinner
2020-12-14 22:37 ` [v2 PATCH 8/9] mm: memcontrol: reparent nr_deferred when memcg offline Yang Shi
2020-12-15  3:07   ` Dave Chinner
2020-12-15 23:10     ` Yang Shi
2020-12-15 23:10       ` Yang Shi
2020-12-14 22:37 ` [v2 PATCH 9/9] mm: vmscan: shrink deferred objects proportional to priority Yang Shi
2020-12-15  3:23   ` Dave Chinner
2020-12-15 23:59     ` Yang Shi
2020-12-15 23:59       ` Yang Shi

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