From: Baoquan He <baoquan.he@linux.dev>
To: Youngjun Park <youngjun.park@lge.com>
Cc: akpm@linux-foundation.org, chrisl@kernel.org, linux-mm@kvack.org,
cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
kasong@tencent.com, hannes@cmpxchg.org, mhocko@kernel.org,
roman.gushchin@linux.dev, shakeel.butt@linux.dev,
muchun.song@linux.dev, shikemeng@huaweicloud.com,
nphamcs@gmail.com, bhe@redhat.com, baohua@kernel.org,
gunho.lee@lge.com, taejoon.song@lge.com, hyungjun.cho@lge.com,
mkoutny@suse.com, baver.bae@lge.com, matia.kim@lge.com
Subject: Re: [PATCH v6 1/4] mm: swap: introduce swap tier infrastructure
Date: Tue, 26 May 2026 06:57:03 +0800 [thread overview]
Message-ID: <ahTTv5OWpaUF6S1S@MiWiFi-R3L-srv> (raw)
In-Reply-To: <20260421055323.940344-2-youngjun.park@lge.com>
On 04/21/26 at 02:53pm, Youngjun Park wrote:
...snip...
> +bool swap_tiers_validate(void)
> +{
> + struct swap_tier *tier;
> +
> + /*
> + * Initial setting might not cover DEF_SWAP_PRIO.
> + * Swap tier must cover the full range (DEF_SWAP_PRIO to SHRT_MAX).
> + */
If so, do we need check if the upmost boundary SHRT_MAX is covered?
> + if (swap_tier_is_active()) {
> + tier = list_last_entry(&swap_tier_active_list,
> + struct swap_tier, list);
> +
> + if (tier->prio != DEF_SWAP_PRIO)
> + return false;
> + }
> +
> + return true;
> +}
...snip...
next prev parent reply other threads:[~2026-05-25 22:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-21 5:53 [PATCH v6 0/4] mm/swap, memcg: Introduce swap tiers for cgroup based swap control Youngjun Park
2026-04-21 5:53 ` [PATCH v6 1/4] mm: swap: introduce swap tier infrastructure Youngjun Park
2026-05-25 21:49 ` Baoquan He
2026-05-26 6:12 ` YoungJun Park
2026-05-25 22:57 ` Baoquan He [this message]
2026-05-26 6:09 ` YoungJun Park
2026-04-21 5:53 ` [PATCH v6 2/4] mm: swap: associate swap devices with tiers Youngjun Park
2026-05-25 23:04 ` Baoquan He
2026-04-21 5:53 ` [PATCH v6 3/4] mm: memcontrol: add interfaces for swap tier selection Youngjun Park
2026-04-23 4:34 ` YoungJun Park
2026-04-21 5:53 ` [PATCH v6 4/4] mm: swap: filter swap allocation by memcg tier mask Youngjun Park
2026-04-23 4:38 ` YoungJun Park
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