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Wed, 12 Nov 2025 22:08:49 -0800 (PST) Received: from google.com ([2401:fa00:8f:203:6d96:d8c6:55e6:2377]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7b924aea0f8sm1003329b3a.5.2025.11.12.22.08.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Nov 2025 22:08:49 -0800 (PST) Date: Thu, 13 Nov 2025 15:08:44 +0900 From: Sergey Senozhatsky To: Sergey Senozhatsky Cc: Andrew Morton , Minchan Kim , Yuwen Chen , Richard Chang , Brian Geffon , Fengyu Lian , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org Subject: Re: [PATCH 1/2] zram: introduce bio batching support for faster writeback Message-ID: References: <45b418277c6ae613783b9ecc714c96313ceb841d.1763013260.git.senozhatsky@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45b418277c6ae613783b9ecc714c96313ceb841d.1763013260.git.senozhatsky@chromium.org> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: D1142C0004 X-Stat-Signature: etuq8bitepqnhwfxfozrmwxqp19xadu3 X-Rspam-User: X-HE-Tag: 1763014130-5368 X-HE-Meta: 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 kifYBmy8 5xi2Kd7oYCgWlh9JN0M7yOQ/5viFB5XH0GYGK8Dpb7o1nc0ENZNjT+RWibfQKnsQUXan+HppBCGG4qPX8wbS4IkqwJFYa8sst1iM4i2mGyOMFSEf4b0zx/WY5OLjoZmuKJP5WdxB1mrszO5BaeDa7Pv3kh8qhps9Vx/+wF0VoRtGH/ChBGVPFtRr7xd7EzY0MNdClt5sSRTwB1Rhs3dxR91wCz28Y05SDfmHqfy20q9LbeHVXE2UUAHmAsfrWqZDNZrpAikvwb9ywHA/ZyTBEtFqUvOGDXsLaD/SgK1jbqcszlgRaeG6YsKaeiOawhWE4Csd106IDvO7Yj07qeHSjaIaZ2akjGLqw4k6BDIVBT/AQXzg= 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 (25/11/13 14:59), Sergey Senozhatsky wrote: [..] > if (!blk_idx) { > blk_idx = alloc_block_bdev(zram); > - if (!blk_idx) { > + if (blk_idx) { > ret = -ENOSPC; > break; This really was not supposed to happen. Will fix in the next iteration.