linux-kernel - [PATCH v3 34/38] nfsd: add a fi_connectable flag to struct nfs4

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Message-Id: <20250924-dir-deleg-v3-34-9f3af8bc5c40@kernel.org>
Date: Wed, 24 Sep 2025 14:06:20 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Alexander Viro <viro@...iv.linux.org.uk>, 
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
 Chuck Lever <chuck.lever@...cle.com>, 
 Alexander Aring <alex.aring@...il.com>, 
 Trond Myklebust <trondmy@...nel.org>, Anna Schumaker <anna@...nel.org>, 
 Steve French <sfrench@...ba.org>, 
 Ronnie Sahlberg <ronniesahlberg@...il.com>, 
 Shyam Prasad N <sprasad@...rosoft.com>, Tom Talpey <tom@...pey.com>, 
 Bharath SM <bharathsm@...rosoft.com>, NeilBrown <neil@...wn.name>, 
 Olga Kornievskaia <okorniev@...hat.com>, Dai Ngo <Dai.Ngo@...cle.com>, 
 Jonathan Corbet <corbet@....net>, Amir Goldstein <amir73il@...il.com>, 
 Miklos Szeredi <miklos@...redi.hu>, Paulo Alcantara <pc@...guebit.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Danilo Krummrich <dakr@...nel.org>, 
 David Howells <dhowells@...hat.com>, Tyler Hicks <code@...icks.com>, 
 Namjae Jeon <linkinjeon@...nel.org>, Steve French <smfrench@...il.com>, 
 Sergey Senozhatsky <senozhatsky@...omium.org>, 
 Carlos Maiolino <cem@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, 
 Masami Hiramatsu <mhiramat@...nel.org>, 
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
 Paulo Alcantara <pc@...guebit.org>
Cc: Rick Macklem <rick.macklem@...il.com>, linux-fsdevel@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org, 
 linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org, 
 linux-doc@...r.kernel.org, netfs@...ts.linux.dev, ecryptfs@...r.kernel.org, 
 linux-unionfs@...r.kernel.org, linux-xfs@...r.kernel.org, 
 linux-trace-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH v3 34/38] nfsd: add a fi_connectable flag to struct
 nfs4_file

When encoding a filehandle for a CB_NOTIFY, there is no svc_export
available, but the server needs to know whether to encode a connectable
filehandle. Add a flag to the nfs4_file that tells whether the
svc_export under which a directory delegation was acquired requires
connectable filehandles.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/nfsd/nfs4state.c | 1 +
 fs/nfsd/state.h     | 1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2147b5f80ca0e650e9dbdb63de7c9af6f4bc7bff..9b5f559ff6125a551f73ac103f8af2e3763dc3e6 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -5031,6 +5031,7 @@ static void nfsd4_file_init(const struct svc_fh *fh, struct nfs4_file *fp)
 	memset(fp->fi_access, 0, sizeof(fp->fi_access));
 	fp->fi_aliased = false;
 	fp->fi_inode = d_inode(fh->fh_dentry);
+	fp->fi_connectable = fh->fh_export->ex_flags & EXPORT_FH_CONNECTABLE;
 #ifdef CONFIG_NFSD_PNFS
 	INIT_LIST_HEAD(&fp->fi_lo_states);
 	atomic_set(&fp->fi_lo_recalls, 0);
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 232b64e1d7721d3074364ff788b4f72b02a6c63f..6e066f0721e6a48394e182b3c273a44d2fbb652d 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -730,6 +730,7 @@ struct nfs4_file {
 	int			fi_delegees;
 	struct knfsd_fh		fi_fhandle;
 	bool			fi_had_conflict;
+	bool			fi_connectable;
 #ifdef CONFIG_NFSD_PNFS
 	struct list_head	fi_lo_states;
 	atomic_t		fi_lo_recalls;

-- 
2.51.0