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GET /api/patches/2227336/?format=api
{ "id": 2227336, "url": "http://patchwork.ozlabs.org/api/patches/2227336/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260423-case-sensitivity-v10-16-c385d674a6cf@oracle.com/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/projects/8/?format=api", "name": "Linux ext4 filesystem development", "link_name": "linux-ext4", "list_id": "linux-ext4.vger.kernel.org", "list_email": "linux-ext4@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260423-case-sensitivity-v10-16-c385d674a6cf@oracle.com>", "list_archive_url": null, "date": "2026-04-23T13:12:19", "name": "[v10,16/17] nfsd: Implement NFSv4 FATTR4_CASE_INSENSITIVE and FATTR4_CASE_PRESERVING", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "b013bc29ccd3d42aba2dc5d894bf8c7a4a886b88", "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-ext4/patch/20260423-case-sensitivity-v10-16-c385d674a6cf@oracle.com/mbox/", "series": [ { "id": 501194, "url": "http://patchwork.ozlabs.org/api/series/501194/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=501194", "date": "2026-04-23T13:12:04", "name": "Exposing case folding behavior", "version": 10, "mbox": "http://patchwork.ozlabs.org/series/501194/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227336/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227336/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=Jfmm=CW=vger.kernel.org=linux-ext4+bounces-16065-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-ext4@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@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=JaYE/SnQ;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1776949981; c=relaxed/simple;\n\tbh=XYKt46mg6wMVV2YdJGZU1apyeQ0MXeEOOUK+OVQco70=;\n\th=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References:\n\t In-Reply-To:To:Cc;\n b=PeUa2/iG/p9uCV8PtehpuLSAYP0a9WyvFVeu5Gf/JZR/8sDsB0v2XN360rSp8GjqTQZKYd/LN36MaW7Z5VwTcVhEp0FJ23EsK24wZPdyI7MUtx9rWzyHgVh10LNreR8RBm8YVhtIejTlZbBCaAdwEPtSiVk0IxbBxmbkaDz4GsA=" ], "ARC-Authentication-Results": [ "i=2; gandalf.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=JaYE/SnQ; dkim-atps=neutral;\n spf=pass (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-ext4+bounces-16065-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org", "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=JaYE/SnQ; 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=1776949981;\n\tbh=XYKt46mg6wMVV2YdJGZU1apyeQ0MXeEOOUK+OVQco70=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=JaYE/SnQVrEr92eGos5xu+rxKnYB29JOGxvTWLOW1s8/0pkDpc/NDjL6YenlsD1UX\n\t eHtXvOkGvvUY70x9iSx5tdDAD46V14R1J3yE6Cl67tvoW7BkGGfsP3gX1aHI6j8u8F\n\t 2wCG3dL6AJd9cNlnrojPiq+yf0RiFQqXeENNOZRZVqchN0PgAagYrcrDs+Kli5SN70\n\t FOGzI0MZoHx9utRo0PcvcCOwYvLnkXClk5EfZ00GJ/AbDnQfP9YUdIJgBOvI7w8BqR\n\t IzJ06vmiyD90lWmlKydA/mr2NNtbgZd4Guj+j9XGwHh3GzzLGmatVAnLpG/t8FCBG5\n\t WVJsMO7xH30mQ==", "From": "Chuck Lever <cel@kernel.org>", "Date": "Thu, 23 Apr 2026 09:12:19 -0400", "Subject": "[PATCH v10 16/17] nfsd: Implement NFSv4 FATTR4_CASE_INSENSITIVE\n and FATTR4_CASE_PRESERVING", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260423-case-sensitivity-v10-16-c385d674a6cf@oracle.com>", "References": "<20260423-case-sensitivity-v10-0-c385d674a6cf@oracle.com>", "In-Reply-To": "<20260423-case-sensitivity-v10-0-c385d674a6cf@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>", "X-Mailer": "b4 0.16-dev", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=2833;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=QFOGuYFmcxqWyXGZEGt68U1bhDPXmPPrCdAEtt84t6g=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6hq0SERDMzl/Ku6k/coKNHnWTaSTkehoUKGr1\n XmcqZPciViJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaeoatAAKCRAzarMzb2Z/\n l+ycD/0XgnwZjb+9LZ1rFtZ/uYLu7XNGKoWGsTX0pGthYq7Ri4V7/KNMz7dap+QXhykptCfRODB\n VXFszVhCfmFBjn32+ec5ZMA65+iem2nVL18lFNplLt84eYxQlVQ4kUioFiyDG8JZslt5cNfV7r5\n o/8ILCI9Ea7ga6nEEXUUiXkugmzKgDPiK56FVzu8gLZA53SIBoiILFyQMskPQ2LmTTGFDwtoQun\n J/qM4Q4WErc5UybzBqcVlWxD8lYBlpMqmFiSpaHFFWk30HYuANc2srzAY049/esIHMLWRlZDXJe\n wHswH9Qo0VyHxY1jtAw2o6Lt+gPrX9DaSE5xac6hlhc+0e10IvKCsymoUKbK808tRIRDiIPtfgU\n VL3Vv5rpzV821SHU5m8iF8PwxYyg3OVvCSfaZ7ntMLtLz+I2AArRCXRUPeutyc2OWuYFZG/KUdv\n SjpeeLJ/IBjZjwyMKdGYxdGlVUaXoXjcmCxB/4dD30XTIVpP1nM0V3jHKhL1usNCeJE3Y00RvLb\n IzoPwqVA4F0ETMqlhXoC+FcuVuG1jFzQiL1fa/9U3GqfuDXA6E2haY4V3H3kf4anCk+xZ896xZ4\n TmS6hzQD9y91jQbH19KpUVc+UXRiSK8OwnDtePopyx6OsNf8SwMTYN5qbCQvD0KbYOqEt10yfjI\n b/LfLZXA5r/lbRA==", "X-Developer-Key": "i=chuck.lever@oracle.com; a=openpgp;\n fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97", "X-Spam-Status": "No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "From: Chuck Lever <chuck.lever@oracle.com>\n\nNFSD currently provides NFSv4 clients with hard-coded responses\nindicating all exported filesystems are case-sensitive and\ncase-preserving. This is incorrect for case-insensitive filesystems\nand ext4 directories with casefold enabled.\n\nQuery the underlying filesystem's actual case sensitivity via\nnfsd_get_case_info() and return accurate values to clients. This\nsupports per-directory settings for filesystems that allow mixing\ncase-sensitive and case-insensitive directories within an export.\n\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/nfsd/nfs4xdr.c | 25 +++++++++++++++++++++++--\n 1 file changed, 23 insertions(+), 2 deletions(-)", "diff": "diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c\nindex 2a0946c630e1..961cd59756fb 100644\n--- a/fs/nfsd/nfs4xdr.c\n+++ b/fs/nfsd/nfs4xdr.c\n@@ -3158,6 +3158,8 @@ struct nfsd4_fattr_args {\n \tu32\t\t\trdattr_err;\n \tbool\t\t\tcontextsupport;\n \tbool\t\t\tignore_crossmnt;\n+\tbool\t\t\tcase_insensitive;\n+\tbool\t\t\tcase_preserving;\n };\n \n typedef __be32(*nfsd4_enc_attr)(struct xdr_stream *xdr,\n@@ -3356,6 +3358,18 @@ static __be32 nfsd4_encode_fattr4_acl(struct xdr_stream *xdr,\n \treturn nfs_ok;\n }\n \n+static __be32 nfsd4_encode_fattr4_case_insensitive(struct xdr_stream *xdr,\n+\t\t\t\t\tconst struct nfsd4_fattr_args *args)\n+{\n+\treturn nfsd4_encode_bool(xdr, args->case_insensitive);\n+}\n+\n+static __be32 nfsd4_encode_fattr4_case_preserving(struct xdr_stream *xdr,\n+\t\t\t\t\tconst struct nfsd4_fattr_args *args)\n+{\n+\treturn nfsd4_encode_bool(xdr, args->case_preserving);\n+}\n+\n static __be32 nfsd4_encode_fattr4_filehandle(struct xdr_stream *xdr,\n \t\t\t\t\t const struct nfsd4_fattr_args *args)\n {\n@@ -3748,8 +3762,8 @@ static const nfsd4_enc_attr nfsd4_enc_fattr4_encode_ops[] = {\n \t[FATTR4_ACLSUPPORT]\t\t= nfsd4_encode_fattr4_aclsupport,\n \t[FATTR4_ARCHIVE]\t\t= nfsd4_encode_fattr4__noop,\n \t[FATTR4_CANSETTIME]\t\t= nfsd4_encode_fattr4__true,\n-\t[FATTR4_CASE_INSENSITIVE]\t= nfsd4_encode_fattr4__false,\n-\t[FATTR4_CASE_PRESERVING]\t= nfsd4_encode_fattr4__true,\n+\t[FATTR4_CASE_INSENSITIVE]\t= nfsd4_encode_fattr4_case_insensitive,\n+\t[FATTR4_CASE_PRESERVING]\t= nfsd4_encode_fattr4_case_preserving,\n \t[FATTR4_CHOWN_RESTRICTED]\t= nfsd4_encode_fattr4__true,\n \t[FATTR4_FILEHANDLE]\t\t= nfsd4_encode_fattr4_filehandle,\n \t[FATTR4_FILEID]\t\t\t= nfsd4_encode_fattr4_fileid,\n@@ -3968,6 +3982,13 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,\n \t\targs.fhp = tempfh;\n \t} else\n \t\targs.fhp = fhp;\n+\tif (attrmask[0] & (FATTR4_WORD0_CASE_INSENSITIVE |\n+\t\t\t FATTR4_WORD0_CASE_PRESERVING)) {\n+\t\tstatus = nfsd_get_case_info(dentry, &args.case_insensitive,\n+\t\t\t\t\t &args.case_preserving);\n+\t\tif (status != nfs_ok)\n+\t\t\tgoto out;\n+\t}\n \n \tif (attrmask[0] & FATTR4_WORD0_ACL) {\n \t\terr = nfsd4_get_nfs4_acl(rqstp, dentry, &args.acl);\n", "prefixes": [ "v10", "16/17" ] }