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GET /api/patches/2232060/?format=api
{ "id": 2232060, "url": "http://patchwork.ozlabs.org/api/patches/2232060/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260502-case-sensitivity-v13-2-aa853140311f@oracle.com/", "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": "<20260502-case-sensitivity-v13-2-aa853140311f@oracle.com>", "list_archive_url": null, "date": "2026-05-02T14:20:47", "name": "[v13,02/15] 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/20260502-case-sensitivity-v13-2-aa853140311f@oracle.com/mbox/", "series": [ { "id": 502530, "url": "http://patchwork.ozlabs.org/api/series/502530/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=502530", "date": "2026-05-02T14:20:45", "name": "Exposing case folding behavior", "version": 13, "mbox": "http://patchwork.ozlabs.org/series/502530/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232060/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232060/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-11361-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=eBqm6Jbp;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-cifs+bounces-11361-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=\"eBqm6Jbp\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201" ], "Received": [ "from sea.lore.kernel.org (sea.lore.kernel.org\n [IPv6:2600:3c0a:e001:db::12fc:5321])\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 4g798b1pjtz1y04\n\tfor <incoming@patchwork.ozlabs.org>; Sun, 03 May 2026 00:22:07 +1000 (AEST)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id 54FF8301226F\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 2 May 2026 14:21:25 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id A0B402ED16D;\n\tSat, 2 May 2026 14:21:24 +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 7A48926D4DD;\n\tSat, 2 May 2026 14:21:24 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 6D525C19425;\n\tSat, 2 May 2026 14:21:18 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1777731684; cv=none;\n b=LmbcP3ggHuOQXEt+BYr3ihIu3I1/Z0SwCq4xsIYCY1liJh0GsDwwsOEhjR7a5NfeiHy7xXnbrzd+PJ+2rL7A4/GoNEnEjv/YCjHpMPXqOsX4E9jBXgE2/DKdziX+yoTr3t7Icb19VDWv+8zwvX25gGw13NI53+CI085aWZvbKck=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777731684; c=relaxed/simple;\n\tbh=TFF/jZiZrtLjdmF8xjSA6CfyQJOvsGBZ0ycggreXc9A=;\n\th=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References:\n\t In-Reply-To:To:Cc;\n b=Qq70FnrcMl+DVbEWIom2DPMilsOvXhaAlpjkx12yfY3D7WFnUgRSiH5SZ2Br5zDrud54jWpQPlcf5xIsgB0pwriwUqD7GMvbweERIEJdv7B5bWBYHhwL88P9pKh1Yhg4X92gu5CqMnX0c3evmnFD5q1nwTULb1wL04X7ms/eyKE=", "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=eBqm6Jbp; 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=1777731684;\n\tbh=TFF/jZiZrtLjdmF8xjSA6CfyQJOvsGBZ0ycggreXc9A=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=eBqm6JbpRK09m+KExsWIch+7qexNWkXHfSuKfQsPH3igH9S0hx55rOI3RECIyDgut\n\t ba5hgcKkWHEdgHrELG7V5cu+6Cg8MIy1C2Mw9IxRth2baXXTD//welnTG443nX9+XT\n\t aY5rLIEQX8fMsSCu4C28ijmsWtz70KPXPvOpVcJI+B32zuZDzhccQgNL2rhyPOr3xq\n\t TCtYd+Un0PMfk5IknQT81pmR4CFNbuAn7NvSnqcVwyRD96Ek9OXKrgAzmGUzITFIhm\n\t 4ORFmahgyFsoNuXn5fQOvuzYGJU+hFnEJnTBz/P+jOIqqsZGSvzBJLyUlpg9yYZKPr\n\t 926vI7LDd8fcA==", "From": "Chuck Lever <cel@kernel.org>", "Date": "Sat, 02 May 2026 10:20:47 -0400", "Subject": "[PATCH v13 02/15] fs: Add case sensitivity flags to file_kattr", "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-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260502-case-sensitivity-v13-2-aa853140311f@oracle.com>", "References": "<20260502-case-sensitivity-v13-0-aa853140311f@oracle.com>", "In-Reply-To": "<20260502-case-sensitivity-v13-0-aa853140311f@oracle.com>", "To": "Al Viro <viro@zeniv.linux.org.uk>,\n Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>", "Cc": "linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,\n linux-xfs@vger.kernel.org, linux-cifs@vger.kernel.org,\n linux-nfs@vger.kernel.org, linux-api@vger.kernel.org,\n linux-f2fs-devel@lists.sourceforge.net, hirofumi@mail.parknet.co.jp,\n linkinjeon@kernel.org, sj1557.seo@samsung.com, yuezhang.mo@sony.com,\n almaz.alexandrovich@paragon-software.com, slava@dubeyko.com,\n glaubitz@physik.fu-berlin.de, frank.li@vivo.com, tytso@mit.edu,\n adilger.kernel@dilger.ca, cem@kernel.org, sfrench@samba.org,\n pc@manguebit.org, ronniesahlberg@gmail.com, sprasad@microsoft.com,\n trondmy@kernel.org, anna@kernel.org, jaegeuk@kernel.org, chao@kernel.org,\n hansg@kernel.org, senozhatsky@chromium.org,\n Chuck Lever <chuck.lever@oracle.com>, \"Darrick J. Wong\" <djwong@kernel.org>,\n Roland Mainz <roland.mainz@nrubsig.org>", "X-Mailer": "b4 0.16-dev", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=3394;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=42BtA/ECrX4U52i4InslT9hET7DZ27jCO0bDUKFKJW4=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp9ghQV+ptopOEb4wuPXE4DInwNk+An3UAx3Qf5\n fBVOOGX8DGJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCafYIUAAKCRAzarMzb2Z/\n l5l/EAC2A5aQCzII1dTBCddUEb+UL/2uO93cCUFllxX6Zm/t/Z+JqJhz1tPahCAyJA9rUuS/YSM\n 07Ykt0E2RrWq/U96W9a4pBcrs3oefHicWW1UHARLONhXkXQmgAbFyN9VzVXlcWOehM6wWxOnBTB\n w+qKTrJx2v6V7OHxLzufRkj9kLE4tbFa5wHGfphUqWDhAGQ3rzKTEcIU5DHCyGcF/QMg8y8zUXk\n fhxN+QRr9CBLG/bmwGkOxhM183F9U5qYNDDuYUKXw9kNjOUABNbZezOX+IWFFb7JJn+A0UNtW39\n eDPcseFtPED7Bpy/tIYQFs70Ts/9HvBvPhwSV8iZel3QhJ1Syf1nAzp1fZ2toFlcoydG1g+Mgs8\n Z8rUyHuwVI4F7eKUnfaa0R/a6FgQ/OifSzLXxNV/Fj+6ztb/DEiLalVAQKJXLIE8klSDe1LXpL3\n v8e5CGdoDT+cETDvSffecXeB8CmE4HYD7/XkvKecxBZn2xI4fljsSaRTAVHC/i4CoeSHN1Oiff/\n 4vRX76cWTrqjzjJCfT1UdwJRSSFArYxAGlkXcP1C9oj7sPTR/x214JbqYDG9vTF+ZGF/R1gQyKX\n n3af4+Z+LMuvn0c2LMik5RU+apcS3waaFIvXWmBwuK7jyUF0NNzfVUk9P0jopol+X7eaRnwXeGb\n rBLWb6S8WpyvcjA==", "X-Developer-Key": "i=chuck.lever@oracle.com; a=openpgp;\n fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97" }, "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. Both flags are added to FS_XFLAG_RDONLY_MASK so\nFS_IOC_FSSETXATTR silently strips them, keeping the new xflags\nstrictly a reporting interface. Callers that want to toggle\ncasefolding continue to use FS_IOC_SETFLAGS with FS_CASEFOLD_FL,\nthe established UAPI on filesystems that support the operation\n(ext4 and f2fs on empty directories).\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>\nReviewed-by: Jan Kara <jack@suse.cz>\nReviewed-by: Roland Mainz <roland.mainz@nrubsig.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 f429da66a317..bfb00d256dd5 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 13f71202845e..2ea4c81df08f 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": [ "v13", "02/15" ] }