From: Yosry Ahmed <yosryahmed@google.com>
To: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Nhat Pham <nphamcs@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 5/9] mm: zswap: remove zswap_same_filled_pages_enabled
Date: Wed, 27 Mar 2024 15:34:15 -0700 [thread overview]
Message-ID: <CAJD7tkZFU-xr_xfEmnaYbatyCz09Re31dAYbLHV9K_XQLqoWaQ@mail.gmail.com> (raw)
In-Reply-To: <3e1eedef-5e4c-448f-95ea-d50b431c4265@linux.dev>
On Tue, Mar 26, 2024 at 7:44 PM Chengming Zhou <chengming.zhou@linux.dev> wrote:
>
> On 2024/3/26 07:50, Yosry Ahmed wrote:
> > There is no logical reason to refuse storing same-filled pages more
> > efficiently and opt for compression. Remove the userspace knob.
> >
> > Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
>
> LGTM, should we also remove zswap_non_same_filled_pages_enabled?
> Not sure if it has real usage...
I am not aware of usages, but in theory you can use it if you
exclusively use zswap to optimize swapping zero-filled pages. Not sure
if anyone actually does that though. We can remove it if everyone else
agrees.
>
> Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Thanks!
next prev parent reply other threads:[~2024-03-27 22:34 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-25 23:50 [RFC PATCH 0/9] zswap: store zero-filled pages more efficiently Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 1/9] mm: zswap: always shrink in zswap_store() if zswap_pool_reached_full Yosry Ahmed
2024-03-26 21:49 ` Nhat Pham
2024-03-27 2:21 ` Chengming Zhou
2024-03-28 19:09 ` Johannes Weiner
2024-03-25 23:50 ` [RFC PATCH 2/9] mm: zswap: refactor storing to the tree out of zswap_store() Yosry Ahmed
2024-03-27 2:25 ` Chengming Zhou
2024-03-27 22:29 ` Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 3/9] mm: zswap: refactor limit checking from zswap_store() Yosry Ahmed
2024-03-27 2:42 ` Chengming Zhou
2024-03-27 22:30 ` Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 4/9] mm: zswap: move more same-filled pages checks outside of zswap_store() Yosry Ahmed
2024-03-26 21:57 ` Nhat Pham
2024-03-27 2:39 ` Chengming Zhou
2024-03-27 22:32 ` Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 5/9] mm: zswap: remove zswap_same_filled_pages_enabled Yosry Ahmed
2024-03-26 22:01 ` Nhat Pham
2024-03-27 2:44 ` Chengming Zhou
2024-03-27 22:34 ` Yosry Ahmed [this message]
2024-03-28 19:11 ` Johannes Weiner
2024-03-28 20:06 ` Yosry Ahmed
2024-03-29 2:14 ` Yosry Ahmed
2024-03-29 14:02 ` Maciej S. Szmigiero
2024-03-29 17:44 ` Johannes Weiner
2024-03-29 18:22 ` Yosry Ahmed
2024-04-01 10:37 ` Maciej S. Szmigiero
2024-04-01 18:29 ` Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 6/9] mm: zswap: drop support for non-zero same-filled pages handling Yosry Ahmed
2024-03-27 11:25 ` Chengming Zhou
2024-03-27 16:40 ` Nhat Pham
2024-03-27 22:38 ` Yosry Ahmed
2024-03-28 19:31 ` Johannes Weiner
2024-03-28 20:23 ` Yosry Ahmed
2024-03-28 21:07 ` Johannes Weiner
2024-03-28 23:19 ` Nhat Pham
2024-03-29 2:05 ` Yosry Ahmed
2024-03-29 4:27 ` Yosry Ahmed
2024-03-29 17:37 ` Johannes Weiner
2024-03-29 18:56 ` Yosry Ahmed
2024-03-29 21:17 ` Johannes Weiner
2024-03-29 22:29 ` Yosry Ahmed
2024-03-28 23:33 ` Nhat Pham
2024-03-29 2:07 ` Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 7/9] mm: zswap: store zero-filled pages without a zswap_entry Yosry Ahmed
2024-03-28 8:12 ` Chengming Zhou
2024-03-28 18:45 ` Yosry Ahmed
2024-03-28 19:38 ` Johannes Weiner
2024-03-28 20:29 ` Yosry Ahmed
2024-03-25 23:50 ` [RFC PATCH 8/9] mm: zswap: do not check the global limit for zero-filled pages Yosry Ahmed
2024-03-28 8:15 ` Chengming Zhou
2024-03-25 23:50 ` [RFC PATCH 9/9] mm: zswap: use zswap_entry_free() for partially initialized entries Yosry Ahmed
2024-03-28 8:31 ` Chengming Zhou
2024-03-28 18:49 ` Yosry Ahmed
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