From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Yosry Ahmed <yosry@kernel.org>, Nhat Pham <nphamcs@gmail.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Yosry Ahmed <yosry.ahmed@linux.dev>,
Johannes Weiner <hannes@cmpxchg.org>,
Brian Geffon <bgeffon@google.com>,
Minchan Kim <minchan@kernel.org>,
Richard Chang <richardycc@google.com>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 0/7] zsmalloc: redesign object alloc API
Date: Tue, 10 Nov 2026 14:49:16 +0900 [thread overview]
Message-ID: <avKwQ4IEOVfYm-8J@google.com> (raw)
In-Reply-To: <CAO9r8zP_K0NF0gt71Emh+2dXmUh+C27uiu5TsyBcGUdLbCus1Q@mail.gmail.com>
On (26/11/05 09:39), Yosry Ahmed wrote:
> On Thu, Nov 5, 2026 at 9:37 AM Nhat Pham <nphamcs@gmail.com> wrote:
> >
> > On Thu, Nov 5, 2026 at 10:31 AM Yosry Ahmed <yosry@kernel.org> wrote:
> > >
> > > On Thu, Nov 05, 2026 at 01:47:30PM +0900, Sergey Senozhatsky wrote:
> > > > Both zram and zswap already have per-entry structures that store zsmalloc
> > > > handles, so allocating a separate handle_cachep object per stored page is
> > > > redundant. This series embeds struct zs_handle directly into zram and
> > > > zswap entries and drops handle_cachep, saving 8 bytes and a slab
> > > > alloc/free per stored object (2MB per 1GB of swapped out 4K pages).
> > >
> > > I always hated that extra layer of indirection, thanks for doing this!
> >
> > +1.
> >
> > The mental load saving excites me more than the memory saving :)
>
> Oh I am 100% supporting this just for my own mental wellbeing, the
> memory saving is the icing on the cake.
Thank you guys!
prev parent reply other threads:[~2026-11-10 5:49 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 4:47 [PATCH 0/7] zsmalloc: redesign object alloc API Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 1/7] zram: drop stale comment in write_incompressible_page() Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 2/7] zram: drop get_slot_handle() and set_slot_handle() Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 3/7] zsmalloc: switch handle type to struct zs_handle Sergey Senozhatsky
2026-11-05 17:03 ` Yosry Ahmed
2026-11-10 2:42 ` Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 4/7] zram: allocate zsmalloc object under slot lock Sergey Senozhatsky
2026-11-06 4:48 ` sashiko-bot
2026-11-10 3:01 ` Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 5/7] zsmalloc: embed struct zs_handle into zram and zswap entries Sergey Senozhatsky
2026-11-05 17:19 ` Yosry Ahmed
2026-11-10 2:51 ` Sergey Senozhatsky
2026-11-10 3:12 ` Sergey Senozhatsky
2026-11-05 17:30 ` Yosry Ahmed
2026-11-10 2:44 ` Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 6/7] zsmalloc: fold zs_obj_write() into zs_store() Sergey Senozhatsky
2026-11-05 17:29 ` Yosry Ahmed
2026-11-10 2:45 ` Sergey Senozhatsky
2026-11-10 5:09 ` Sergey Senozhatsky
2026-11-05 4:47 ` [PATCH 7/7] zsmalloc: constify struct zs_handle pointer in read-only functions Sergey Senozhatsky
2026-11-05 17:31 ` [PATCH 0/7] zsmalloc: redesign object alloc API Yosry Ahmed
2026-11-05 17:36 ` Nhat Pham
2026-11-05 17:39 ` Yosry Ahmed
2026-11-10 5:49 ` Sergey Senozhatsky [this message]
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