From: Andrew Morton <akpm@linux-foundation.org>
To: "zhaoyang.huang" <zhaoyang.huang@unisoc.com>
Cc: Matthew Wilcox <willy@infradead.org>,
Suren Baghdasaryan <surenb@google.com>,
Minchan Kim <minchan@kernel.org>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>,
Zhaoyang Huang <huangzhaoyang@gmail.com>, <ke.wang@unisoc.com>
Subject: Re: [PATCHv5] mm: skip CMA pages when they are not available
Date: Fri, 9 Jun 2023 15:35:19 -0700 [thread overview]
Message-ID: <20230609153519.ff01046ef0faff00a74bd5b0@linux-foundation.org> (raw)
In-Reply-To: <1685501461-19290-1-git-send-email-zhaoyang.huang@unisoc.com>
On Wed, 31 May 2023 10:51:01 +0800 "zhaoyang.huang" <zhaoyang.huang@unisoc.com> wrote:
> From: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
>
> This patch fixes unproductive reclaiming of CMA pages by skipping them when they
> are not available for current context. It is arise from bellowing OOM issue, which
> caused by large proportion of MIGRATE_CMA pages among free pages.
>
> [ 36.172486] [03-19 10:05:52.172] ActivityManager: page allocation failure: order:0, mode:0xc00(GFP_NOIO), nodemask=(null),cpuset=foreground,mems_allowed=0
> [ 36.189447] [03-19 10:05:52.189] DMA32: 0*4kB 447*8kB (C) 217*16kB (C) 124*32kB (C) 136*64kB (C) 70*128kB (C) 22*256kB (C) 3*512kB (C) 0*1024kB 0*2048kB 0*4096kB = 35848kB
> [ 36.193125] [03-19 10:05:52.193] Normal: 231*4kB (UMEH) 49*8kB (MEH) 14*16kB (H) 13*32kB (H) 8*64kB (H) 2*128kB (H) 0*256kB 1*512kB (H) 0*1024kB 0*2048kB 0*4096kB = 3236kB
> ...
> [ 36.234447] [03-19 10:05:52.234] SLUB: Unable to allocate memory on node -1, gfp=0xa20(GFP_ATOMIC)
> [ 36.234455] [03-19 10:05:52.234] cache: ext4_io_end, object size: 64, buffer size: 64, default order: 0, min order: 0
> [ 36.234459] [03-19 10:05:52.234] node 0: slabs: 53,objs: 3392, free: 0
>
We saw plenty of feedback for earlier versions, but now silence. Does
this mean we're all OK with v5?
next prev parent reply other threads:[~2023-06-09 22:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 2:51 [PATCHv5] mm: skip CMA pages when they are not available zhaoyang.huang
2023-06-09 22:35 ` Andrew Morton [this message]
2023-06-10 1:51 ` Matthew Wilcox
2023-06-12 9:29 ` David Hildenbrand
2023-06-12 9:35 ` Zhaoyang Huang
2023-06-12 10:01 ` David Hildenbrand
2023-06-12 20:56 ` Andrew Morton
2024-08-13 9:49 ` Breno Leitao
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230609153519.ff01046ef0faff00a74bd5b0@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=huangzhaoyang@gmail.com \
--cc=ke.wang@unisoc.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=minchan@kernel.org \
--cc=surenb@google.com \
--cc=willy@infradead.org \
--cc=zhaoyang.huang@unisoc.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.