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GET /api/patches/2197420/?format=api
{ "id": 2197420, "url": "http://patchwork.ozlabs.org/api/patches/2197420/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260217214741.1928576-3-cel@kernel.org/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260217214741.1928576-3-cel@kernel.org>", "list_archive_url": null, "date": "2026-02-17T21:47:26", "name": "[v8,02/17] fs: Add case sensitivity flags to file_kattr", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "88be93badfa2c2c076765ad8e678c7bbe57ce420", "submitter": { "id": 86689, "url": "http://patchwork.ozlabs.org/api/people/86689/?format=api", "name": "Chuck Lever", "email": "cel@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260217214741.1928576-3-cel@kernel.org/mbox/", "series": [ { "id": 492484, "url": "http://patchwork.ozlabs.org/api/series/492484/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=492484", "date": "2026-02-17T21:47:24", "name": "Subject: Exposing case folding behavior", "version": 8, "mbox": "http://patchwork.ozlabs.org/series/492484/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2197420/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197420/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-9417-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=Q2JfILvo;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=linux-cifs+bounces-9417-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"Q2JfILvo\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201" ], "Received": [ "from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fFtZd54Khz1xvq\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 18 Feb 2026 08:49:13 +1100 (AEDT)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id 4FF7B3044831\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 17 Feb 2026 21:47:52 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id A2B282F5A36;\n\tTue, 17 Feb 2026 21:47:51 +0000 (UTC)", "from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 7D4872F5308;\n\tTue, 17 Feb 2026 21:47:51 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 1C254C4CEF7;\n\tTue, 17 Feb 2026 21:47:49 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1771364871; cv=none;\n b=LoD/8tsEV0BR2R6rvCoe93BRQWqn50C+yFHYuTfJflMomUPOG0Vb3WTTbbOdED+WEjKjk58hqVt7ZRdASLSVvG9LMsAFqwILb6X6TJqO3vB52P9O+meNNiBsqNUU3ihw4JGbxpIyRfFwQWfuSbv/sm2D6FPKodOeqqbCTzFWhyk=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1771364871; c=relaxed/simple;\n\tbh=IkFTNj4YaZnxGN4TzARNs05Fr3MBdOqHUXQGsszMnTE=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=m5nPswNjI0WQcxIEOLcsrpIb4Jv0yMXA7v+zzApGB+UOkHTiSs13xGtalZ3L22ZteuQScF+Ik/T1B0ErGxpoTJnZuD0WoFZomGYnJR7hqFXrrIS/yntzXEL0l2Bz31uUeGQrthXP5gkvh4CRVcpWTNwKSgYtRjH99eTYy5zzPkY=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=Q2JfILvo; arc=none smtp.client-ip=10.30.226.201", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1771364871;\n\tbh=IkFTNj4YaZnxGN4TzARNs05Fr3MBdOqHUXQGsszMnTE=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=Q2JfILvomqvCqW1cxeTF8yTFct5HVTXX15utPB8kPEWazZMf8y4xJCMqcqmkoG+rB\n\t TePEjKHj8VDutex3u8Rx+hE3neEa1Wax630URIJ+yv9DeCNeFJI8sVF6qaefYm+GpA\n\t zAF5/e3YuF7NzR/cprMX0Vaa9YHW1n5F6Er+/FL9V4iWjPewsrEeBde/wXX3xi1j0B\n\t k3fIw+gLyWzosp+yrU6mkTwtX0mq7dJUVRztLZX2gIML0VSuXIo08jsCIYyhM844so\n\t mY+Fg4IIpgAt5yMsWqhnhgnVYd1llyIw0zEW33sxCJRZIpbuurwnDwj3azrns6DxWS\n\t Hl4HNwBxvUHqg==", "From": "Chuck Lever <cel@kernel.org>", "To": "Al Viro <viro@zeniv.linux.org.uk>,\n\tChristian Brauner <brauner@kernel.org>,\n\tJan Kara <jack@suse.cz>", "Cc": "linux-fsdevel@vger.kernel.org,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-xfs@vger.kernel.org,\n\tlinux-cifs@vger.kernel.org,\n\tlinux-nfs@vger.kernel.org,\n\tlinux-api@vger.kernel.org,\n\tlinux-f2fs-devel@lists.sourceforge.net,\n\thirofumi@mail.parknet.co.jp,\n\tlinkinjeon@kernel.org,\n\tsj1557.seo@samsung.com,\n\tyuezhang.mo@sony.com,\n\talmaz.alexandrovich@paragon-software.com,\n\tslava@dubeyko.com,\n\tglaubitz@physik.fu-berlin.de,\n\tfrank.li@vivo.com,\n\ttytso@mit.edu,\n\tadilger.kernel@dilger.ca,\n\tcem@kernel.org,\n\tsfrench@samba.org,\n\tpc@manguebit.org,\n\tronniesahlberg@gmail.com,\n\tsprasad@microsoft.com,\n\ttrondmy@kernel.org,\n\tanna@kernel.org,\n\tjaegeuk@kernel.org,\n\tchao@kernel.org,\n\thansg@kernel.org,\n\tsenozhatsky@chromium.org,\n\tChuck Lever <chuck.lever@oracle.com>,\n\t\"Darrick J. Wong\" <djwong@kernel.org>", "Subject": "[PATCH v8 02/17] fs: Add case sensitivity flags to file_kattr", "Date": "Tue, 17 Feb 2026 16:47:26 -0500", "Message-ID": "<20260217214741.1928576-3-cel@kernel.org>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260217214741.1928576-1-cel@kernel.org>", "References": "<20260217214741.1928576-1-cel@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-cifs@vger.kernel.org", "List-Id": "<linux-cifs.vger.kernel.org>", "List-Subscribe": "<mailto:linux-cifs+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-cifs+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "From: Chuck Lever <chuck.lever@oracle.com>\n\nEnable upper layers such as NFSD to retrieve case sensitivity\ninformation from file systems by adding FS_XFLAG_CASEFOLD and\nFS_XFLAG_CASENONPRESERVING flags.\n\nFilesystems report case-insensitive or case-nonpreserving behavior\nby setting these flags directly in fa->fsx_xflags. The default\n(flags unset) indicates POSIX semantics: case-sensitive and\ncase-preserving. These flags are read-only; userspace cannot set\nthem via ioctl.\n\nCase sensitivity information is exported to userspace via the\nfa_xflags field in the FS_IOC_FSGETXATTR ioctl and file_getattr()\nsystem call.\n\nReviewed-by: \"Darrick J. Wong\" <djwong@kernel.org>\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/file_attr.c | 4 ++++\n include/linux/fileattr.h | 3 ++-\n include/uapi/linux/fs.h | 7 +++++++\n 3 files changed, 13 insertions(+), 1 deletion(-)", "diff": "diff --git a/fs/file_attr.c b/fs/file_attr.c\nindex 42aa511111a0..5d9a7ed159fb 100644\n--- a/fs/file_attr.c\n+++ b/fs/file_attr.c\n@@ -37,6 +37,8 @@ void fileattr_fill_xflags(struct file_kattr *fa, u32 xflags)\n \t\tfa->flags |= FS_PROJINHERIT_FL;\n \tif (fa->fsx_xflags & FS_XFLAG_VERITY)\n \t\tfa->flags |= FS_VERITY_FL;\n+\tif (fa->fsx_xflags & FS_XFLAG_CASEFOLD)\n+\t\tfa->flags |= FS_CASEFOLD_FL;\n }\n EXPORT_SYMBOL(fileattr_fill_xflags);\n \n@@ -67,6 +69,8 @@ void fileattr_fill_flags(struct file_kattr *fa, u32 flags)\n \t\tfa->fsx_xflags |= FS_XFLAG_PROJINHERIT;\n \tif (fa->flags & FS_VERITY_FL)\n \t\tfa->fsx_xflags |= FS_XFLAG_VERITY;\n+\tif (fa->flags & FS_CASEFOLD_FL)\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n }\n EXPORT_SYMBOL(fileattr_fill_flags);\n \ndiff --git a/include/linux/fileattr.h b/include/linux/fileattr.h\nindex 3780904a63a6..58044b598016 100644\n--- a/include/linux/fileattr.h\n+++ b/include/linux/fileattr.h\n@@ -16,7 +16,8 @@\n \n /* Read-only inode flags */\n #define FS_XFLAG_RDONLY_MASK \\\n-\t(FS_XFLAG_PREALLOC | FS_XFLAG_HASATTR | FS_XFLAG_VERITY)\n+\t(FS_XFLAG_PREALLOC | FS_XFLAG_HASATTR | FS_XFLAG_VERITY | \\\n+\t FS_XFLAG_CASEFOLD | FS_XFLAG_CASENONPRESERVING)\n \n /* Flags to indicate valid value of fsx_ fields */\n #define FS_XFLAG_VALUES_MASK \\\ndiff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h\nindex 70b2b661f42c..2fa003575e8b 100644\n--- a/include/uapi/linux/fs.h\n+++ b/include/uapi/linux/fs.h\n@@ -254,6 +254,13 @@ struct file_attr {\n #define FS_XFLAG_DAX\t\t0x00008000\t/* use DAX for IO */\n #define FS_XFLAG_COWEXTSIZE\t0x00010000\t/* CoW extent size allocator hint */\n #define FS_XFLAG_VERITY\t\t0x00020000\t/* fs-verity enabled */\n+/*\n+ * Case handling flags (read-only, cannot be set via ioctl).\n+ * Default (neither set) indicates POSIX semantics: case-sensitive\n+ * lookups and case-preserving storage.\n+ */\n+#define FS_XFLAG_CASEFOLD\t0x00040000\t/* case-insensitive lookups */\n+#define FS_XFLAG_CASENONPRESERVING 0x00080000\t/* case not preserved */\n #define FS_XFLAG_HASATTR\t0x80000000\t/* no DIFLAG for this\t*/\n \n /* the read-only stuff doesn't really belong here, but any other place is\n", "prefixes": [ "v8", "02/17" ] }