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Tue, 13 Jan 2026 09:05:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 590E3C116C6; Tue, 13 Jan 2026 09:04:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768295104; bh=JI/qrCCxv4pysbre1tzQVlevGeAvi+n57KXP24R0MJ8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=CnYA8E2Gu31DQPhrYzsWX1t22ob14451gLqFOUSl/SinV1rCBAzfiU2sahsoSGqOJ VBY02ntXi5Q5SDRV6HiepZptbFX8F8AdQP9xqgFf93/WwlkU+hWr0R4I5VjLMPKGGh U63jcqRtJja7FTR60WIPOokx5BkhnvnMPEzZ6j/MWTva/UYy8Ec6zsUGcxVJ8qBV3d J0Pn7u7oEcRus23vOvWhgT6/IhNmgT+6zo1fnbZqkL3DArx+SuMnTVPWXLBOzp6o8n DGLZDjd1epIDdLleBOrWoaUzY0JtB4p/+CMsY57fIDfjqu7TMsTaI0xiwXgeHkL3Uq h5R7PZE9FG1xQ== Date: Tue, 13 Jan 2026 10:04:56 +0100 To: Chuck Lever Message-ID: <20260113-vorort-pudding-ef90f426d5cf@brauner> References: <20260112174629.3729358-1-cel@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260112174629.3729358-1-cel@kernel.org> X-Headers-End: 1vfaKs-0005Wv-3b Subject: Re: [f2fs-dev] [PATCH v3 00/16] Exposing case folding behavior X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Christian Brauner via Linux-f2fs-devel Reply-To: Christian Brauner Cc: Jan Kara , pc@manguebit.org, yuezhang.mo@sony.com, cem@kernel.org, almaz.alexandrovich@paragon-software.com, adilger.kernel@dilger.ca, linux-cifs@vger.kernel.org, sfrench@samba.org, slava@dubeyko.com, linux-ext4@vger.kernel.org, linkinjeon@kernel.org, sprasad@microsoft.com, frank.li@vivo.com, vira@so61, ronniesahlberg@gmail.com, glaubitz@physik.fu-berlin.de, jaegeuk@kernel.org, hirofumi@mail.parknet.co.jp, linux-nfs@vger.kernel.org, tytso@mit.edu, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, senozhatsky@chromium.org, Chuck Lever , hansg@kernel.org, anna@kernel.org, linux-fsdevel@vger.kernel.org, sj1557.seo@samsung.com, trondmy@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On Mon, Jan 12, 2026 at 12:46:13PM -0500, Chuck Lever wrote: > From: Chuck Lever > > Following on from > > https://lore.kernel.org/linux-nfs/20251021-zypressen-bazillus-545a44af57fd@brauner/T/#m0ba197d75b7921d994cf284f3cef3a62abb11aaa > > I'm attempting to implement enough support in the Linux VFS to > enable file services like NFSD and ksmbd (and user space > equivalents) to provide the actual status of case folding support > in local file systems. The default behavior for local file systems > not explicitly supported in this series is to reflect the usual > POSIX behaviors: > > case-insensitive = false > case-preserving = true > > The case-insensitivity and case-preserving booleans can be consumed > immediately by NFSD. These two booleans have been part of the NFSv3 > and NFSv4 protocols for decades, in order to support NFS clients on > non-POSIX systems. > > Support for user space file servers is why this series exposes case > folding information via a user-space API. I don't know of any other > category of user-space application that requires access to case > folding info. This all looks good to me. Just one question: This reads like you are exposing the new file attr bits via userspace but I can only see changes to the kernel internal headers not the uapi headers. So are you intentionally not exposing this as a new uapi extension to file attr or is this an accident? _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel