linux-kernel - Re: [PATCH 1/2] mm/zswap: make sure each swapfile always have zswap rb-tree

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Message-ID: <20240118150531.GG939255@cmpxchg.org>
Date: Thu, 18 Jan 2024 10:05:31 -0500
From: Johannes Weiner <hannes@...xchg.org>
To: Chengming Zhou <zhouchengming@...edance.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Yosry Ahmed <yosryahmed@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Chris Li <chriscli@...gle.com>,
	Nhat Pham <nphamcs@...il.com>
Subject: Re: [PATCH 1/2] mm/zswap: make sure each swapfile always have zswap
 rb-tree

On Wed, Jan 17, 2024 at 09:23:18AM +0000, Chengming Zhou wrote:
> Not all zswap interfaces can handle the absence of the zswap rb-tree,
> actually only zswap_store() has handled it for now.
> 
> To make things simple, we make sure each swapfile always have the
> zswap rb-tree prepared before being enabled and used. The preparation
> is unlikely to fail in practice, this patch just make it explicit.
> 
> Signed-off-by: Chengming Zhou <zhouchengming@...edance.com>

Acked-by: Johannes Weiner <hannes@...xchg.org>