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 842778F7D for ; Thu, 23 Jan 2025 02:00:32 +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=1737597632; cv=none; b=FG1mnjihLFczhHg7hcbTFjvLnEDP19SMbQ+52scMW9/WYIUknS6PM9gk2BKnZ0KRDAz5W2AMi5wa6A7pVj4+bkwS9kmCQWY8aIfyP7IXiWnkG7GgJnJHqhKA129w3aNbJqNV3eZc1mRYNq4LxXvJNSBUSG5sfruh2/GiUpX/rQU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737597632; c=relaxed/simple; bh=yroC1KreSUODZP0INo0fIXnrbats90oMjLd44T7Fe2A=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=Ko1Mf42wr3C5sZ1Mo+Qe2X9+tAhbgVpVDiZgOUQJOuElx54TQdZQwsTxMHntC174wPs9oUdjarQDGHt0NlQXfUbfrSQVdPnkifvTYiD83C/l6mK1AFj6ZR1aQxkPvrfqkjLLNWC5GjB8UzufTi3JrCmnsyrbN6kcIYkkmkrgk+Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k2G5LqLD; 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="k2G5LqLD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1AD47C4CED2; Thu, 23 Jan 2025 02:00:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737597631; bh=yroC1KreSUODZP0INo0fIXnrbats90oMjLd44T7Fe2A=; h=Date:Cc:Subject:To:References:From:In-Reply-To:From; b=k2G5LqLDbSusVPUef++Xnj7XuzaRNGNmDkoEmVaCeg72jbazXZoGqaf+y36SQiDdz tg7M7wdEN8pG7fBKxRZ9m7v0KbQ+yZ7yeOqhwxBxrLYTnHAHXnBMeXhASCX41Z3d1X dZ9ENx7Bt7PZ7r/15Yt9A05U/xLA22AphLHcVX94gTPWa2GlMse/McnhX1JcqjUhCx KWFqB4AOGcOZoNkAbP3fQqSAzuvzxfaJRPTamCzl81JJGPb3Lp+BoOmq0MuedqJGoS 6OA6X09Z8CSUnA8dbFI3oTCC9rKn0rWroQJ6M41wKYpvcbtwPpzcadPGVHzgmH3kfx hlYPGQnkJorcw== Message-ID: Date: Thu, 23 Jan 2025 10:00:29 +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 request donate file-backed pages To: Jaegeuk Kim , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net References: <20250122211323.3835557-1-jaegeuk@kernel.org> <20250122211323.3835557-3-jaegeuk@kernel.org> Content-Language: en-US From: Chao Yu In-Reply-To: <20250122211323.3835557-3-jaegeuk@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 1/23/25 05:10, Jaegeuk Kim via Linux-f2fs-devel wrote: > 1. ioctl(fd1, F2FS_IOC_DONATE_RANGE, {0,3}); > 2. ioctl(fd2, F2FS_IOC_DONATE_RANGE, {1,2}); > 3. ioctl(fd3, F2FS_IOC_DONATE_RANGE, {3,1}); > 4. echo 1024 > /sys/fs/f2fs/blk/reclaim_caches_kb > > will reclaim 4MB page cache ranges, registered by #1, #2, and #3. 4MB -> 1MB? > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks,