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From: Barry Song <21cnbao@gmail.com>
To: kasong@tencent.com
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	 Chris Li <chrisl@kernel.org>,
	Kemeng Shi <shikemeng@huaweicloud.com>,
	 Nhat Pham <nphamcs@gmail.com>, Baoquan He <bhe@redhat.com>,
	 Carsten Grohmann <mail@carstengrohmann.de>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	 linux-kernel@vger.kernel.org,
	 "open list:SUSPEND TO RAM" <linux-pm@vger.kernel.org>,
	Carsten Grohmann <carstengrohmann@gmx.de>
Subject: Re: [PATCH v4 2/3] mm, swap: reduce indention for hibernate allocation helper
Date: Wed, 18 Feb 2026 16:21:55 +0800	[thread overview]
Message-ID: <CAGsJ_4z83AvzDNXFOY7UftOAkPcK+6AoR2rE_2rzQLTqx400eA@mail.gmail.com> (raw)
In-Reply-To: <20260216-hibernate-perf-v4-2-1ba9f0bf1ec9@tencent.com>

On Mon, Feb 16, 2026 at 10:58 PM Kairui Song via B4 Relay
<devnull+kasong.tencent.com@kernel.org> wrote:
[...]
> +       /* Return empty entry if device is not usable (swapoff or full) */

I feel like swap full only affects the swap_avail_head /
swap_available list. Does it also make
get_swap_device_info() return false?

> +       if (!si || !get_swap_device_info(si))
> +               return entry;

Best Regards
Barry


  reply	other threads:[~2026-02-18  8:22 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-16 14:58 [PATCH v4 0/3] mm/swap: hibernate: improve hibernate performance with new allocator Kairui Song via B4 Relay
2026-02-16 14:58 ` [PATCH v4 1/3] mm, swap: speed up hibernation allocation and writeout Kairui Song via B4 Relay
2026-02-16 21:42   ` Andrew Morton
2026-02-17 18:37     ` Kairui Song
2026-02-16 14:58 ` [PATCH v4 2/3] mm, swap: reduce indention for hibernate allocation helper Kairui Song via B4 Relay
2026-02-18  8:21   ` Barry Song [this message]
2026-02-18  8:58     ` Kairui Song
2026-02-16 14:58 ` [PATCH v4 3/3] mm, swap: merge common convention and simplify " Kairui Song via B4 Relay

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