From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 12924EEC0 for ; Fri, 4 Sep 2026 01:54:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788486849; cv=none; b=ahWayufGkiJZms42QBdRQd1YxJuyRs2EHBEbuXF5HTeEl3/BxSYEporIVZKzap35p+V0H7qCKcXbTVlSE8241AG5dAUWnrHxOhRmFe7RFlalklQ7kepW8ShWp2iKthfGenwVS4haNXbiRO6WZgciJY0KJPD/AsW6QYLg7m9G7kE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788486849; c=relaxed/simple; bh=cF4pabPAvNTJVZ1A0H8ef/xg4V+WfFaUS+JONTzWQsc=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=bibDDnAp93K6njJRxUY+qxmk5biV9rCcD7V1aucMnWu8GWBsVrCg2CbL4zqYpMTSj2fuw80JuZp7Mj1z7ZMbLOUa7P4+LpHJszMsztt/cHkrnjJSqT4vCRVYzn5+ANK1C+hGJ0Pmct40yrKLRWKTYwYdnZb0D/SPP5r5EuleggU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CMKUXVIc; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CMKUXVIc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EBF01F000E9; Fri, 4 Sep 2026 01:54:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788486847; bh=1WRoLVevLW92ZIPX07qRkQmYsWzRclwhzP39wqjr+bk=; h=Date:Cc:Subject:To:References:From:In-Reply-To; b=CMKUXVIcZ6FuF1ROV9ZJT6R2Q95SSvruGs49Sv0hA7bSd9RFkNWYiUAgbV58voFZ+ ke9r38PWwkptBTb2GMHnsS27+jbFh18HhTR+fWi5/jnMkfMekFhw97UEMOUUP5U5mT 6CizXrmkEBH1vUD4zW47IWTn81OQQCuSswXSkxN8xxhICylz41H8ZuQtEbk7tGjEyv W/sZl4/7LCnSmIIsrPkoYZDU8dPBqcG+3T83nm0hIxFMvwsgY+nShDflqc35v9hlE2 W8/j8eLUFh6rCLOd2UnrLfVGgKAEcCgwdzlSIMyr2egr54Fin9anhZaA9ZYtPvd/1s PfSu0ih6WO2NA== Message-ID: Date: Fri, 4 Sep 2026 09:54:04 +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, Jaegeuk Kim , Daeho Jeong , linux-kernel@vger.kernel.org Subject: Re: [PATCH v9 02/11] f2fs: describe SIT block layout dynamically To: Kelvin Zhang , linux-f2fs-devel@lists.sourceforge.net References: <10843e36038ce78374ef20fe8c19f6ec392bc078.1788479509.git.zhangxp1998@gmail.com> Content-Language: en-US From: Chao Yu In-Reply-To: <10843e36038ce78374ef20fe8c19f6ec392bc078.1788479509.git.zhangxp1998@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 9/4/26 07:56, Kelvin Zhang wrote: > An SIT block consists of an on-disk array of struct f2fs_sit_entry elements > whose total capacity depends on the filesystem block size. The existing > fixed SIT_ENTRY_PER_BLOCK macro hardcodes a 4KB block size. > > Convert the entries array in struct f2fs_sit_block into a C flexible array > member, and calculate sbi->sit_entries_per_block dynamically in > init_sb_info(). > > Parameterize SIT indexing helpers (SIT_ENTRY_PER_BLOCK, SIT_BLOCK_OFFSET, > SIT_BLK_CNT, and f2fs_start_segno) to take struct f2fs_sb_info *sbi, and > update all call sites across segment management, checkpointing, and mount. > > This is a layout-only change; valid 4KB filesystems retain identical > runtime geometry and behavior. > > Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Thanks,