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From: Qian Cai <cai@lca.pw>
To: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Waiman Long <longman@redhat.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Johannes Weiner <hannes@cmpxchg.org>,
	Roman Gushchin <guro@fb.com>, Vlastimil Babka <vbabka@suse.cz>,
	Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
	Jann Horn <jannh@google.com>, Song Liu <songliubraving@fb.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rafael Aquini <aquini@redhat.com>
Subject: Re: [PATCH] mm/vmstat: Reduce zone lock hold time when reading /proc/pagetypeinfo
Date: Thu, 24 Oct 2019 10:55:59 -0400	[thread overview]
Message-ID: <884AF12F-2CC5-4DCE-9F94-BEADECA98888@lca.pw> (raw)
In-Reply-To: <20191024133859.GX17610@dhcp22.suse.cz>



> On Oct 24, 2019, at 9:39 AM, Michal Hocko <mhocko@kernel.org> wrote:
> 
> Because the migrate type is the information that helps to understand
> fragmentation related issues. I am pretty sure Vlastimil would tell you
> much more.

Then, I don’t see any point of having two files (pagetypeinfo and buddyinfo) exporting the similar type of information which is probably more important to figure out than fixing the 10-year old DoS.

  reply	other threads:[~2019-10-24 14:56 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-22 16:21 [PATCH] mm/vmstat: Reduce zone lock hold time when reading /proc/pagetypeinfo Waiman Long
2019-10-22 16:57 ` Michal Hocko
2019-10-22 18:00   ` Waiman Long
2019-10-22 18:40     ` Waiman Long
2019-10-23  0:52       ` David Rientjes
2019-10-23  8:31   ` Mel Gorman
2019-10-23  9:04     ` Michal Hocko
2019-10-23  9:56       ` Mel Gorman
2019-10-23 10:27         ` [RFC PATCH 0/2] " Michal Hocko
2019-10-23 10:27           ` [RFC PATCH 1/2] mm, vmstat: hide /proc/pagetypeinfo from normal users Michal Hocko
2019-10-23 13:13             ` Mel Gorman
2019-10-23 13:27             ` Vlastimil Babka
2019-10-23 14:52             ` Waiman Long
2019-10-23 15:10             ` Rafael Aquini
2019-10-23 16:15             ` Vlastimil Babka
2019-10-24 19:01             ` David Rientjes
2019-10-23 10:27           ` [RFC PATCH 2/2] mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo Michal Hocko
2019-10-23 13:15             ` Mel Gorman
2019-10-23 13:32             ` Vlastimil Babka
2019-10-23 13:37               ` Michal Hocko
2019-10-23 13:48                 ` Vlastimil Babka
2019-10-23 14:31                   ` Michal Hocko
2019-10-23 16:20                     ` Vlastimil Babka
2019-10-23 13:46               ` Rafael Aquini
2019-10-23 14:56             ` Waiman Long
2019-10-23 15:21               ` Waiman Long
2019-10-23 16:10               ` Michal Hocko
2019-10-23 16:17                 ` Waiman Long
2019-10-23 16:21                   ` Waiman Long
2019-10-23 16:15             ` Vlastimil Babka
2019-10-23 16:41             ` Michal Hocko
2019-10-23 16:47               ` Waiman Long
2019-10-23 17:34             ` [PATCH 1/2] mm, vmstat: Release zone lock more frequently when reading /proc/pagetypeinfo Waiman Long
2019-10-23 18:01               ` Michal Hocko
2019-10-23 18:14                 ` Waiman Long
2019-10-23 20:02                   ` Michal Hocko
2019-10-23 17:34             ` [PATCH 2/2] mm, vmstat: List total free blocks for each order in /proc/pagetypeinfo Waiman Long
2019-10-23 18:02               ` Michal Hocko
2019-10-23 18:07                 ` Waiman Long
2019-10-24  8:20           ` [RFC PATCH 0/2] mm/vmstat: Reduce zone lock hold time when reading /proc/pagetypeinfo Michal Hocko
2019-10-24 16:16             ` Waiman Long
2019-10-23 12:42         ` [PATCH] " Qian Cai
2019-10-23 13:25         ` Vlastimil Babka
2019-10-22 21:59 ` Andrew Morton
2019-10-23  6:15   ` Michal Hocko
2019-10-23 14:30   ` Waiman Long
2019-10-23 14:48     ` Qian Cai
2019-10-23 15:01       ` Waiman Long
2019-10-23 15:05         ` Qian Cai
2019-10-23 22:30         ` Andrew Morton
2019-10-24  5:33           ` Qian Cai
2019-10-24  7:42             ` Michal Hocko
2019-10-24 11:11               ` Qian Cai
2019-10-24 13:38                 ` Michal Hocko
2019-10-24 14:55                   ` Qian Cai [this message]
2019-10-24  3:33         ` Feng Tang
2019-10-24  4:34           ` Qian Cai
2019-10-24  5:34             ` Feng Tang
2019-10-24 10:51               ` Qian Cai
2019-10-25  1:38                 ` Feng Tang
2019-10-23 15:03       ` Rafael Aquini
2019-10-23 15:51         ` Qian Cai

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