From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) (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 B4F3F1D1F7B for ; Fri, 6 Sep 2024 14:51:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725634262; cv=none; b=t8tDB7eWbDgiur63SJwIANwGdBXqDpa4thuNv0JA6OgkCD7KGteX20EJME7+2/B9N+atZJo92+cfBP8awTmDLio5sobMtBD9RAah+nfEHdcQe+psl44hwvOFS168W3K7KijcuuQLVIPMjkMNXzYwQdAcYf/A6fd9jUFPuXH+2LY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725634262; c=relaxed/simple; bh=Bg9hJ5AL+IvxGCWyvU8rqLJ6yreb3n3IQc5S28odOj4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=nUqZRFKcq/nVj9gIpblGgvIg9nn5zFxjEa4WbuvcQ9oOBFB17mZXFUl43qPDsfBCokFbWl69rEpp7izGon2u2T7K+45dtZqrZp9gh4Eb0NmkKbxPGS/CElOiky1W64vz/PCJbyJnJBsaVMZxeMXeT8HyOHEn+YXfEcat+R098HU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=1jCn0htg; arc=none smtp.client-ip=209.85.215.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="1jCn0htg" Received: by mail-pg1-f169.google.com with SMTP id 41be03b00d2f7-7d666fb3fb9so634030a12.0 for ; Fri, 06 Sep 2024 07:51:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1725634260; x=1726239060; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=Z5lBMEQHLKMaF3jRPCocf543Y2cCOhdzZyzb/i804/c=; b=1jCn0htg9rIKVG3gr4RyvBW2xerbZqNoisHQnPRG3iEK14vJmz7L+TWa6jhp/zEyOn XBEM7LhlinIvDP54mlsId1BJ9NCGfEsXam4H9q+r2aQP5ei7jiw8aq2lAZsUNf9Td6lL LQ9ftrpH46BRFmXFj/iCgLdxyYNWlABeEpzNigeazYPsFyMZpCB/K4IcOHNtBsUx5adF TYdp2cScJ6QpzWlSsW5/vEoGW2SHWXQMblHIYZnmVhlSAOCQ+yDAQZjWyIwLbw9wzXxp ZFKVWoxtVJrvAixbsfWr4CPQMnl2pTYX/EkUL4j9NhITGqas0Y0l3iVwwDMfsidti9O/ W+WA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725634260; x=1726239060; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Z5lBMEQHLKMaF3jRPCocf543Y2cCOhdzZyzb/i804/c=; b=XT6XsAlKGjmGQU0WAZmHyVvB0GDABoDSLnI+dYM5SwimosXmDGSW8x5Lht/9ZSN/6A +lJ7IITFTCvrxeF+2Get8vIBsp02m+uZtTWHX/CfUBieSUMbQ+PYFRPzh4bh8GmXJ2fJ q+plYUkuW2Nkmu+y6tUYKIo+1HsmadiQ4opG48RSJXMLWVfm4umGRzlG9PPznsvX72WB gJvoOv0jNOoHIxVoWzPFi5VhXPXXoF6TQsRsI5mcLB4F2f3xzDOzlaN8Y4vDMGlQIoE9 HN/vwMuY6eF1+StBNB9lkfp7xVXhDzqpif5Azwuw22n2G+lq7GxKENchA7NWJrDJtsH4 hFjQ== X-Forwarded-Encrypted: i=1; AJvYcCWjGf2WajRjvpDsE5KQUs4ScrQgE5GglIhh+xdcuSUi/W8fyxrMbYyHGGnYHfsQeaGViRR27GRPKRWvUxc=@vger.kernel.org X-Gm-Message-State: AOJu0YwdJz0ltUUfpALMLTWCixgnKwiWLONZdc/vmzKFKlZDdDC5b0Eg ogsz766fdenpPknFbHbfJg4ZnuAueth+uNTMes4qL0KCepo4u+cxHKx6eGEHYSs= X-Google-Smtp-Source: AGHT+IEsBiV55U4YTmFuWCBXZ4clh9+5GpKkqbHGl45VMScWAVU6JAkZCc2jfIndMU3vKbc1JBztKg== X-Received: by 2002:a17:90b:1083:b0:2d8:89c3:1b57 with SMTP id 98e67ed59e1d1-2da8f2f3f81mr15557313a91.15.1725634259950; Fri, 06 Sep 2024 07:50:59 -0700 (PDT) Received: from [192.168.1.150] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2dadc07681asm1657102a91.33.2024.09.06.07.50.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 Sep 2024 07:50:59 -0700 (PDT) Message-ID: Date: Fri, 6 Sep 2024 08:50:57 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/3] zram: Replace bit spinlocks with a spinlock_t. To: Sebastian Andrzej Siewior Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Galbraith , Minchan Kim , Sergey Senozhatsky , Thomas Gleixner , Alexander Lobakin References: <20240906141520.730009-1-bigeasy@linutronix.de> <20240906144849.HrQCoqvn@linutronix.de> Content-Language: en-US From: Jens Axboe In-Reply-To: <20240906144849.HrQCoqvn@linutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/6/24 8:48 AM, Sebastian Andrzej Siewior wrote: > On 2024-09-06 08:31:23 [-0600], Jens Axboe wrote: >> On 9/6/24 8:14 AM, Sebastian Andrzej Siewior wrote: >>> Hi, >>> >>> this is follow up to the previous posting, making the lock >>> unconditionally. The original problem with bit spinlock is that it >>> disabled preemption and the following operations (within the atomic >>> section) perform operations that may sleep on PREEMPT_RT. Mike expressed >>> that he would like to keep using zram on PREEMPT_RT. >> >> Looks good to me: >> >> Reviewed-by: Jens Axboe > Thank you. > This is routed via your tree, right? I can certainly take it - Minchan let me know if you have concerns. -- Jens Axboe