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Tue, 07 Jul 2026 03:55:50 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:d4f4:6328:49c0:b912]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ca5af6df87fsm781139a12.5.2026.07.07.03.55.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jul 2026 03:55:49 -0700 (PDT) Date: Tue, 7 Jul 2026 19:55:46 +0900 From: Sergey Senozhatsky To: Sebastian Andrzej Siewior Cc: Sergey Senozhatsky , Andrew Morton , Yosry Ahmed , Hillf Danton , Kairui Song , Minchan Kim , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v10 01/19] zram: sleepable entry locking Message-ID: References: <20250303022425.285971-1-senozhatsky@chromium.org> <20250303022425.285971-2-senozhatsky@chromium.org> <20260707064030.D843llKh@linutronix.de> <20260707093024.DPG2lvt_@linutronix.de> <20260707100241.zaM2yrF5@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260707100241.zaM2yrF5@linutronix.de> On (26/07/07 12:02), Sebastian Andrzej Siewior wrote: [..] > If you have zram0 and zram1 and both have different lock chains which > could result in a deadlock from theoretical point of view but not in > reality because the zram0-swap never clash with zram1-ext4 then you > should have a dynamic key. That means add it struct zram and register > with lockdep_register_key() and assign with the lock as you did. Sounds good. Do you have time to send a patch or do you prefer me to cook one (giving you the credit)?