{"id":2227342,"url":"http://patchwork.ozlabs.org/api/patches/2227342/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260423-case-sensitivity-v10-12-c385d674a6cf@oracle.com/","project":{"id":12,"url":"http://patchwork.ozlabs.org/api/projects/12/?format=json","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":"<20260423-case-sensitivity-v10-12-c385d674a6cf@oracle.com>","list_archive_url":null,"date":"2026-04-23T13:12:15","name":"[v10,12/17] f2fs: Add case sensitivity reporting to fileattr_get","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"326bd754da024b10e84cb5a167ddaef4ba9b1698","submitter":{"id":86689,"url":"http://patchwork.ozlabs.org/api/people/86689/?format=json","name":"Chuck Lever","email":"cel@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260423-case-sensitivity-v10-12-c385d674a6cf@oracle.com/mbox/","series":[{"id":501195,"url":"http://patchwork.ozlabs.org/api/series/501195/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=501195","date":"2026-04-23T13:12:06","name":"Exposing case folding behavior","version":10,"mbox":"http://patchwork.ozlabs.org/series/501195/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227342/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227342/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","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=XyVfCJyz;\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; 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260423-case-sensitivity-v10-12-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 ,\n Christian Brauner , Jan Kara ","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 ","X-Mailer":"b4 0.16-dev","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1357;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=VPjzbnXW1pubGqzv+x/v8JVwQ1rV4VASVn6uK7QQPMw=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6hq01oe4hrZUserJsuf/NEs+cgupLfYyc5a52\n 6R79zdge4iJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaeoatAAKCRAzarMzb2Z/\n l4ZBD/9wjTO+FgmmJWESBaRJUhoMgK1nZIp7zgs+Wa6SmIxuIdzrpbMs+xm1OAqllWNB6IIvw0B\n 6ccNv0Q6DS6iU8ItuVw3tOp7HLe401lJlgouULwUUMYXLU1E+l+gXr8m6rPUoTXJNEhss2AEH9r\n oBoz6jRj6LaH7on75SZvEW6/28fC3GxcUfB+2I5y6TyDhu/GjizbiI7ZK46ZT3DXHBk8OOk+pjG\n cZv6oeu29/MBQQ4gTDr7WSNkkbIts35lcIrm/W7nq0AY4jAkarHCPcm8j5kVpdQBO15BC/+/6we\n dgM6/p7jV61E5LjEluzL9b55N1ntJRwTHuu6mcTWqif2pT3aOvWkBJNuluEJDOkCG/oFuTyT4dJ\n xBJWjtURC6STk6hOIZTx37/slUhlp1aocnhqnxFEnzCaDVpFw2NGOWUH8Ew7HJdOwt3y+e+52Mc\n ReREwUMol0AizDnbSIpJaq77SJjUp78zfj/DdTmFj1MKChJUM/1jVKcfsVP8rgJl4FPwoyyNsHi\n stShGcmDkz7XyKa4+QD1TfOSqP/TAyHCADwELknIrkme0FX2UNxRnPZA4WAROx7QPVJlg9ab5nu\n 9mmP3QrzjSE1I4rilxNUgsThXlThhwP6VYCF4yPRhdhGIhi2m5wrUFRW5Z2ANHDlFbIQsUjHgey\n ihCsVbuZhW2a1+g==","X-Developer-Key":"i=chuck.lever@oracle.com; a=openpgp;\n fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97"},"content":"From: Chuck Lever \n\nNFS and other remote filesystem protocols need to determine\nwhether a local filesystem performs case-insensitive lookups\nso they can provide correct semantics to clients. Without\nthis information, f2fs exports cannot properly advertise\ntheir filename case behavior.\n\nReport f2fs case sensitivity behavior via the FS_XFLAG_CASEFOLD\nflag. Like ext4, f2fs supports per-directory case folding via\nthe casefold flag (IS_CASEFOLDED). f2fs always preserves case\nat rest.\n\nReviewed-by: Chao Yu \nSigned-off-by: Chuck Lever \n---\n fs/f2fs/file.c | 8 ++++++++\n 1 file changed, 8 insertions(+)","diff":"diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c\nindex fb12c5c9affd..347568ff0d58 100644\n--- a/fs/f2fs/file.c\n+++ b/fs/f2fs/file.c\n@@ -3463,6 +3463,14 @@ int f2fs_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n \tif (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))\n \t\tfa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);\n \n+\t/*\n+\t * Casefold is a per-directory attribute in f2fs; the on-disk\n+\t * name is preserved regardless. Report FS_XFLAG_CASEFOLD for\n+\t * casefolded directories so callers (e.g. NFS export) can\n+\t * advertise case-insensitive lookup semantics for that tree.\n+\t */\n+\tif (IS_CASEFOLDED(inode))\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n \treturn 0;\n }\n \n","prefixes":["v10","12/17"]}