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From: Yosry Ahmed To: Herbert Xu Cc: "Sridhar, Kanchana P" , SeongJae Park , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "hannes@cmpxchg.org" , "nphamcs@gmail.com" , "chengming.zhou@linux.dev" , "usamaarif642@gmail.com" , "ryan.roberts@arm.com" , "21cnbao@gmail.com" <21cnbao@gmail.com>, "ying.huang@linux.alibaba.com" , "akpm@linux-foundation.org" , "senozhatsky@chromium.org" , "kasong@tencent.com" , "linux-crypto@vger.kernel.org" , "davem@davemloft.net" , "clabbe@baylibre.com" , "ardb@kernel.org" , "ebiggers@google.com" , "surenb@google.com" , "Accardi, Kristen C" , "Gomes, Vinicius" , "Feghali, Wajdi K" , "Gopal, Vinodh" Subject: Re: [PATCH v13 22/22] mm: zswap: Batched zswap_compress() with compress batching of large folios. Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 14E16120006 X-Stat-Signature: 5rtiqywsobzwaek7pze3o77q3hozr1ur X-Rspam-User: X-HE-Tag: 1765382034-724300 X-HE-Meta: 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 VJHC5oYW wtDfGU4pDsqdFeAyi5+JS6M4LJ3wNDtuSPa2kFwJZDaIw1U+m1hjNmzNSdxF6moRvxIC5qr+KrWXsHtv8b1SXjOVHdG67v6JVQn5ktIXbqz5uQ+1JuzkY7hWsUy6b3gj0FaISe3x2xgcEKEkdZHOFB2OPpAI/0u+dCM6AhmUtSs/h16RLqxBuYEtX9OmMMSpLuoAt04Kc58WQG3EZZCYHaBq4yNEYlANDjbKncyqHvj4OPW8IX8jexfCQWNcYGceTUUxlX8r6HOijsf87gLFtMBIkBoUUd6c4szfWnf6Y/ZI7kJ9mzU6PIBiBxq0WnkrIz2XF3Q431ekKzBlHjjhqXR433RUyaIwx5+A+OX2rQmv4kyw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Dec 10, 2025 at 12:28:11PM +0800, Herbert Xu wrote: > On Tue, Dec 09, 2025 at 05:31:35PM +0000, Yosry Ahmed wrote: > > > > Ugh, yes.. I don't think we want to burn 7 extra pages per-CPU for SW > > compressors. > > OK so the consensus is that we're keeping the visible batch size > attribute for now, which will be set to 1 for everything but iaa. > > So for now I'm going to just provide a trivial acomp fallback so > that non-batching algorithms conform to the batching calling > convention for a batch size of 1. Thank you! > > Cheers, > -- > Email: Herbert Xu > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt