From: Nhat Pham <nphamcs@gmail.com>
To: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Yosry Ahmed <yosry.ahmed@linux.dev>,
Minchan Kim <minchan@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Brian Geffon <bgeffon@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC PATCH] zsmalloc: make common caches global
Date: Mon, 19 Jan 2026 13:43:12 -0800 [thread overview]
Message-ID: <CAKEwX=PxJo6RijehmJMz+kK45Qr9AcQMCedO7KY_+GWzsW20tQ@mail.gmail.com> (raw)
In-Reply-To: <20260116044841.334821-1-senozhatsky@chromium.org>
On Thu, Jan 15, 2026 at 8:49 PM Sergey Senozhatsky
<senozhatsky@chromium.org> wrote:
>
> Currently, zsmalloc creates kmem_cache of handles and zspages
> for each pool, which may be suboptimal from the memory usage
> point of view (extra internal fragmentation per pool). Systems
> that create multiple zsmalloc pools may benefit from shared
> common zsmalloc caches.
>
> Make handles and zspages kmem caches global.
Hmm yeah this sounds reasonable to me. No reason to have dedicated
kmem_cache per zs_pool (in the case of zswap, I suppose it's one for
each compression algorithm, which is usually just one - but still...).
Is there any lock contention implications?
>
next prev parent reply other threads:[~2026-01-19 21:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-16 4:48 Sergey Senozhatsky
2026-01-16 5:52 ` Sergey Senozhatsky
2026-01-19 21:44 ` Nhat Pham
2026-01-21 3:41 ` Sergey Senozhatsky
2026-01-21 23:58 ` Yosry Ahmed
2026-01-22 3:28 ` Sergey Senozhatsky
2026-01-22 3:39 ` Yosry Ahmed
2026-01-22 3:55 ` Sergey Senozhatsky
2026-01-16 20:49 ` Yosry Ahmed
2026-01-17 2:24 ` Sergey Senozhatsky
2026-01-21 1:30 ` Yosry Ahmed
2026-01-21 1:56 ` Sergey Senozhatsky
2026-01-19 21:43 ` Nhat Pham [this message]
2026-01-20 1:19 ` Sergey Senozhatsky
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