From: Andrew Morton <akpm@linux-foundation.org>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: mhocko@suse.com, jweiner@fb.com, linux-mm@kvack.org
Subject: Re: [PATCH] mm, show_mem: drop pgdat_resize_lock in show_mem()
Date: Wed, 28 Nov 2018 14:07:51 -0800 [thread overview]
Message-ID: <20181128140751.e79de952a3fdfdac3aab75e9@linux-foundation.org> (raw)
In-Reply-To: <20181128210815.2134-1-richard.weiyang@gmail.com>
On Thu, 29 Nov 2018 05:08:15 +0800 Wei Yang <richard.weiyang@gmail.com> wrote:
> Function show_mem() is used to print system memory status when user
> requires or fail to allocate memory. Generally, this is a best effort
> information and not willing to affect core mm subsystem.
>
> The data protected by pgdat_resize_lock is mostly correct except there is:
>
> * page struct defer init
> * memory hotplug
What is the advantage in doing this? What problem does the taking of
that lock cause?
next prev parent reply other threads:[~2018-11-28 22:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-28 21:08 [PATCH] mm, show_mem: drop pgdat_resize_lock in show_mem() Wei Yang
2018-11-28 22:07 ` Andrew Morton [this message]
2018-11-29 1:52 ` Wei Yang
2018-11-29 8:17 ` Michal Hocko
2018-11-29 9:32 ` Wei Yang
2018-11-29 15:04 ` Wei Yang
2018-11-29 15:49 ` Michal Hocko
2018-11-29 16:05 ` Wei Yang
2018-11-29 16:18 ` Michal Hocko
2018-11-29 23:49 ` Wei Yang
2018-11-29 23:55 ` [PATCH v2] " Wei Yang
2018-11-30 8:17 ` Michal Hocko
2018-11-30 8:54 ` osalvador
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