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 78C9EB67E; Wed, 14 Jan 2026 00:50:32 +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=1768351832; cv=none; b=LGdkSq7QedDejB2Lc7x/sUFWlhyVfRSFfvl4i54EX5EV5oGv722PiZ9VUxN5QU/VV33ILCgNkxFnjRG4L2ZgL8NXBUINQrYo1kKpvlAL7Aph1XkHw5R4G3UXPaHfYywkb1XOrNWfm7uc8e+etoqn4aElsJ59viBJbxBis0fjc0I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768351832; c=relaxed/simple; bh=+9zYSMUTpSMrvV0FSgMPb55zEujWI6/QvhZDmkn6Hcw=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=j4gjXKJqtPMy/7LuRH2OfoEuE7T8Mv+R890Nom7PdVAjLDU9CoC+hAZOH4EUTVCmK3n5bp0bUMMlwN8XgACdYrdYJw0LsvXyGjMLM102/UAtgw1ThREvYsqwKsGNKQUiahsGuONd0nJ/jDMYQSWNCPKPlsgidvq6iopH2D7/5zI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=V6+ilgFQ; 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="V6+ilgFQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08CCAC116C6; Wed, 14 Jan 2026 00:50:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768351832; bh=+9zYSMUTpSMrvV0FSgMPb55zEujWI6/QvhZDmkn6Hcw=; h=Date:Cc:Subject:To:References:From:In-Reply-To:From; b=V6+ilgFQW43CxxB0Ex+ogsongMpvbfghBmxkSgrWphV0lnjygSgFjqLckjm/gnIYy BwGcch325gDKgsJWHahl/rJlmW4p7BO4zv5sEv8yg5pHapsmUZqfsMcsHsmByLt+sl OFR5YQ8dFV++SqdKVZof43IPvg3PwKwwTT61iQ06lFcpjzMWHRbSua7eflJOrMeQow gLZY7HIu7oZ9DLWsHMgANHPS7tvpVr9yMB/8ZS7bBEUCxQCfczmw/FFe+LNnF0QKiN 3Sbca5hVHFORscf4aNpf6DgtrE/LdqIlofXsrn6El0ez2oSNS6I8PV7UueHTe+RjQ7 SxEP17tqGSImQ== Message-ID: Date: Wed, 14 Jan 2026 08:50:23 +0800 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: chao@kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, hirofumi@mail.parknet.co.jp, linkinjeon@kernel.org, sj1557.seo@samsung.com, yuezhang.mo@sony.com, almaz.alexandrovich@paragon-software.com, slava@dubeyko.com, glaubitz@physik.fu-berlin.de, frank.li@vivo.com, tytso@mit.edu, adilger.kernel@dilger.ca, cem@kernel.org, sfrench@samba.org, pc@manguebit.org, ronniesahlberg@gmail.com, sprasad@microsoft.com, trondmy@kernel.org, anna@kernel.org, jaegeuk@kernel.org, hansg@kernel.org, senozhatsky@chromium.org, Chuck Lever Subject: Re: [PATCH v3 11/16] f2fs: Add case sensitivity reporting to fileattr_get To: Chuck Lever , Christian Brauner , Jan Kara References: <20260112174629.3729358-1-cel@kernel.org> <20260112174629.3729358-12-cel@kernel.org> Content-Language: en-US From: Chao Yu In-Reply-To: <20260112174629.3729358-12-cel@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/13/2026 1:46 AM, Chuck Lever wrote: > From: Chuck Lever > > NFS and other remote filesystem protocols need to determine > whether a local filesystem performs case-insensitive lookups > so they can provide correct semantics to clients. Without > this information, f2fs exports cannot properly advertise > their filename case behavior. > > Report f2fs case sensitivity behavior via the file_kattr > boolean fields. Like ext4, f2fs supports per-directory case > folding via the casefold flag (IS_CASEFOLDED). Files are > always case-preserving. > > Signed-off-by: Chuck Lever Reviewed-by: Chao Yu Thanks,