From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f174.google.com (mail-pf1-f174.google.com [209.85.210.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 038363385B6 for ; Fri, 24 Jul 2026 03:25:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784863518; cv=none; b=K/L6lsJ77K8yj8purDN74x0pnw5ynaLRi8B3iL1wYwm+OxLEZt4LtFtw0z8nc7ouTZTeIAQ/odpeim3oJ9K6asEaBcUhOVz1wmAPLP+aR19cKKEkALEFycJmsT5EgFkita4ocW+JL29mNgZNOIh0PWewt7sEfN04KcYDD7gdPE8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784863518; c=relaxed/simple; bh=7RDujKArK7A0YRlt5XOrnzoT4HTdB/1nKHdXAHzhjUc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=R4Emr/EL0Q36HwstIsQbkgw5BJCJdToMbsi+6KoSwvKf63Es7G5nWQtPVyXwNykm53RxH7vTpZW5UPQCzv+5aTSCqfUOT72jjV+Anw5+D6pkmHcNI5qYLcWUn8we+Ij0JDSpQJMJ2twr9UsjQvojlQT1TquZEjbJgZX/Nv9NIqs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=kubMpi4R; arc=none smtp.client-ip=209.85.210.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="kubMpi4R" Received: by mail-pf1-f174.google.com with SMTP id d2e1a72fcca58-84867f07d63so1566532b3a.2 for ; Thu, 23 Jul 2026 20:25:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1784863516; x=1785468316; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=cLw+iNXTSGSfw9Y7a8fjmuaJ5kL6Cp8Mm5bKv5Vuo/k=; b=kubMpi4RyHy9i8rid02LLfzTCjniE/U83GzA/z54ay3MI4oXXt29FW7lAp21Jeg3Th dI07FpzPVt8HbE0GlAzdL7uHbmDY902wfxQKudbi6XIgp5lNdJ40s4fyzvNrbLdnJ5WG 8TlJ3ys6rLp8YCwbTTU2wD8rpCpy3IeBoOYAw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784863516; x=1785468316; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=cLw+iNXTSGSfw9Y7a8fjmuaJ5kL6Cp8Mm5bKv5Vuo/k=; b=RuJmjlcNhD/t5Inw5ODpPSLAiEOew3KDrUb9xuhaoMGEJFNagz2vG7/Ah/yhTuqgz+ ZgXxupFktMJ7TQEv0UjiCl/KCDQnUw7niSakm8Z1FeRlKtgQ+KxmXBeTukM34Vbxuk4t lC0PW5YlkIQuCledc8hYX7wr0CNBisX8GWRsqE/HHfRJW9Ew0wFgq+lQzp5hN+2IRKv0 4kCWuz3IlG9IX8jor515LDihsR9xQ0E8zKIxEI1TdFYHwDnjnaTLKovpOGvbh5S3Fh/c gilkb+xM06MpdxVkzSakKkhEEp7ApN3HevBX2otGUWawEixZdpx6CMynakzozb65geaA J/sA== X-Forwarded-Encrypted: i=1; AHgh+Rp37XWTgKms7RFgei0CBiPRFfj3qOp+kBOztNdC1tbDiIukRKTH1RTCA4eSdho3uH7mOEI4Yv611VUUKw==@vger.kernel.org X-Gm-Message-State: AOJu0Yx8IcWmeSDnSO1OTU42bMmvEdU92ACmGTd+N0xYafV+JsPsFKe4 zGy5QKvmh9qP9jQ42GKPfcaTL4gf26xG5eHekj7BEE7FYUC35v/1aXTP32rq27vGDg== X-Gm-Gg: AR+sD121pvrfGXpd8kQdB5xR3QWnjiREEPe87ohqZ3AcsWU0ZToSQOIcAz7H8/j2mHf UX8cvBLDviiwFZ0X7q0TWd2TiXrepcEOPKjlvVSTFXIpcGKjxWukl7ZxbZ8XNKDy/YRKR2syOAE XJS4QGult4MlSeOQL4GHaR5lKkAuVy/MmP4tIgTpeZmRxil0FgAbh8oLnjk/KjhuqkUrbnsSOXZ Z3vQxd5XMg8VgvLl8sBvJwei3buEVjeXsuLtyBBAW90O9JFDH3GZ+XfeGnKFwtYQ5POvsPTB5U4 TNz1sAJm/SCV61fbIZ/IkdJCymk1SUJd+tXBrPdIistAEpQSNxMVV9fhXPM11rM/WalcglPWHZm OXKx+g5R3q2Dlq/PUOW9zJqBdqDsd65GaQDnbA+E2Ly5AOiyB9FEUEv9cFn72mMaHtkZEag1EmZ m2r5/I35GXF1Q5BQw9dzT1/nHLphlqzAtmypXN0rBC7g== X-Received: by 2002:a05:6a00:12c9:b0:848:4c0c:9482 with SMTP id d2e1a72fcca58-84e2baddf27mr6682896b3a.35.1784863516432; Thu, 23 Jul 2026 20:25:16 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:c102:f12d:5168:6be5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84e175a29aesm3924592b3a.41.2026.07.23.20.25.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jul 2026 20:25:16 -0700 (PDT) Date: Fri, 24 Jul 2026 12:25:13 +0900 From: Sergey Senozhatsky To: Sebastian Andrzej Siewior Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, Minchan Kim , Sergey Senozhatsky , Jens Axboe Subject: Re: [PATCH 1/2] zram: Move lockmap to be per-zram instead per table Message-ID: References: <20260714141300.3945672-1-bigeasy@linutronix.de> <20260714141300.3945672-2-bigeasy@linutronix.de> Precedence: bulk X-Mailing-List: linux-block@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: <20260714141300.3945672-2-bigeasy@linutronix.de> On (26/07/14 16:12), Sebastian Andrzej Siewior wrote: > The zram object contains an array zram_table_entry. Each one has a > `lock' variable and each has a matching struct lockdep_map. This mimics > a struct mutex. > > It uses always the same key for all lockdep_map instances. This makes it > look like the same lock to lockdep. Therefore it could be reduced to > have one lockdep_map per struct zram. > > Use only one struct lockdep_map per struct zram. > > Signed-off-by: Sebastian Andrzej Siewior Reviewed-by: Sergey Senozhatsky Tested-by: Sergey Senozhatsky