From: Shakeel Butt <shakeel.butt@linux.dev>
To: ying chen <yc1082463@gmail.com>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/vmscan: when the swappiness is set to 0, memory swapping should be prohibited during the global reclaim process
Date: Thu, 27 Feb 2025 11:12:50 -0800 [thread overview]
Message-ID: <5u6rwht2mdwi3t4x3r5gtelruihtvfak24ci32moh2v7z52a3g@qkr2jcjgh4dw> (raw)
In-Reply-To: <CAN2Y7hxDdATNfb=R5J1as3pqA1RsP8c8LubC4QxojK5cJS9Q9w@mail.gmail.com>
On Thu, Feb 27, 2025 at 10:34:51PM +0800, ying chen wrote:
> When we use zram as swap disks, global reclaim may cause the memory in some
> cgroups with memory.swappiness set to 0 to be swapped into zram. This memory
> won't be swapped back immediately after the free memory increases. Instead,
> it will continue to occupy the zram space, which may result in no available
> zram space for the cgroups with swapping enabled. Therefore, I think that
> when the vm.swappiness is set to 0, global reclaim should also refrain
> from memory swapping, just like these cgroups.
>
> Signed-off-by: yc1082463 <yc1082463@gmail.com>
It seems like you are still on memcg-v1. What is stopping you to move to
memcg-v2 and use memory.swap.max = 0?
next prev parent reply other threads:[~2025-02-27 19:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-27 14:34 ying chen
2025-02-27 15:54 ` Joshua Hahn
2025-02-27 16:19 ` Johannes Weiner
2025-02-28 3:18 ` ying chen
2025-02-28 3:21 ` Yafang Shao
2025-02-28 3:16 ` ying chen
2025-02-27 19:12 ` Shakeel Butt [this message]
2025-02-28 2:48 ` ying chen
2025-03-03 12:07 ` Michal Hocko
-- strict thread matches above, loose matches on Subject: below --
2025-02-27 7:51 ying chen
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