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Fri, 09 Oct 2026 21:08:43 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:540c:2d4a:7d35:ee3]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2e8421b16casm19275425ad.40.2026.10.09.21.08.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Oct 2026 21:08:43 -0700 (PDT) Date: Sat, 10 Oct 2026 13:08:37 +0900 From: Sergey Senozhatsky To: Usama Arif Cc: Sergey Senozhatsky , Andrew Morton , chengming.zhou@linux.dev, dsterba@suse.com, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nphamcs@gmail.com, terrelln@fb.com, yosry@kernel.org, riel@surriel.com, shakeel.butt@linux.dev, alex@ghiti.fr, kernel-team@meta.com Subject: Re: [PATCH 1/2] mm: zswap: use separate compression and decompression requests Message-ID: References: <20261006002307.2669023-1-usama.arif@linux.dev> <20261006002307.2669023-2-usama.arif@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: E6982140005 X-Stat-Signature: 9y65dj79iu4917aop3s97xtizwtjpehd X-HE-Tag: 1791605324-877578 X-HE-Meta: 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 44zK9Xne LyGVKyD/ZrIH3vdbwxmhfT0+m+nuOdYXMMQ5gHzThmai85EQiR2H4Y35JKUERBeHDi0USBRTS7lZDGsBHcS16zLcfyna5XIBgzqosJautQSNUdRTpPi26G89ee8xwvWDdZS7/FCPPn509SP942vxRxyR4Wd2xgf8sJdDFGqWLC8Wm333vHz+9Ki7Gaoi7ITf/tGOEuU13awX4tjhvRnSZCBRWI2uWNCmhOpCX7xC79nzMsAx0Eyzwqh9uxPEpmVH7r5ckTMLVzaoKnf3Q9/L7seSs8RXDpmIkq/nOoO/8YJnPdp8Qs9bzaca37rLQI0QW24ktnTTxtNZZCQsxXjXAo7BP4cG5gt5zgdxlE5h0HHZgI8y2qfF4dROEHw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On (26/10/09 17:26), Usama Arif wrote: > Thanks for the inital patches! Thank you for working on this! > > Catch me if you can ;P > > > > [1] https://lore.kernel.org/all/20261009071157.3730698-12-senozhatsky@chromium.org > > I think it wont help zstd, right? It would help stateless decompressors like > lz4 I think. Correct, zstd and deflate decomp contexts are mutable, cannot be shared.