From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3FFC613635E for ; Thu, 13 Feb 2025 02:15:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739412921; cv=none; b=hFNkhx+SaEq/7Nm9WHr8+liYoziFgxEN6m7EnEfMteR6PTdjUIotYuLGC89Jf3ZuD+gbRNPalvoAWwNsBN/uaZUZuWEmvKjPmyUlQCDZejengC03XBbChE5tFzya+Q1GZTzjE14TDpuLXtVzIBGeWVtG5Blexe5BYEpG7OvrN+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739412921; c=relaxed/simple; bh=mST8ETe+CoH5pqNO25ZA1AqNJb2gdz1ovJLhGwKV+dE=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=oetNkNhtwupaiKsZQvrn0zGRMCDtdEsbLCPPR6JBnVCcdPtUd6wI0ylM3JwR4V2cyiy63FuxmSW85qINOB/z3dvnFDSYXjOqkX8PxDhnZ+ifSF3NIyt95LGVf64AbjQactbyiW7ci+8/+za8T+2nUvnw3S4MNWu54Tgw4ud4Q3M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BtKKpE9P; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BtKKpE9P" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E44F9C4CEDF; Thu, 13 Feb 2025 02:15:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739412919; bh=mST8ETe+CoH5pqNO25ZA1AqNJb2gdz1ovJLhGwKV+dE=; h=Date:Cc:Subject:To:References:From:In-Reply-To:From; b=BtKKpE9PonSp0lPpeWz7EJsN+PgWl41JO7RTvooEYrMe79IyxCikI/btG5LnqRqW8 jpdt9zr+uF20uusDJhY0g4DKMyWe7Pe8UXdg/Gsmo1QhYkqyQaniZsxKtgc3xt1Tob zA03hq7JMGro3Zy7xLB4X1s3K8NP5vl13fqc6y/MLokFHZBrwmOslcI0+OTP5cD0zP XteyVjg9iSWr96fOdYgUbZFmiVelDieApaRODn5miAsg+gALnaaiVGMaeQvqZCpgpv Ku4WMzQXgS5I5EjG/i3Vm1IiO+UG6B+UTXWAz7Lek8g84osc7loJea6dhF6Ef5D0kH taePXCTRXYHgQ== Message-ID: Date: Thu, 13 Feb 2025 10:15:17 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: chao@kernel.org Subject: Re: [f2fs-dev] [PATCH 2/2] f2fs: add a sysfs entry to reclaim POSIX_FADV_NOREUSE pages To: Jaegeuk Kim , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net References: <20250212023518.897942-1-jaegeuk@kernel.org> <20250212023518.897942-3-jaegeuk@kernel.org> Content-Language: en-US From: Chao Yu In-Reply-To: <20250212023518.897942-3-jaegeuk@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 2/12/25 10:31, Jaegeuk Kim via Linux-f2fs-devel wrote: > 1. fadvise(fd1, POSIX_FADV_NOREUSE, {0,3}); > 2. fadvise(fd2, POSIX_FADV_NOREUSE, {1,2}); > 3. fadvise(fd3, POSIX_FADV_NOREUSE, {3,1}); > 4. echo 1024 > /sys/fs/f2fs/tuning/reclaim_caches_kb > > This gives a way to reclaim file-backed pages by iterating all f2fs mounts until > reclaiming 1MB page cache ranges, registered by #1, #2, and #3. > > 5. cat /sys/fs/f2fs/tuning/reclaim_caches_kb > -> gives total number of registered file ranges. > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks,