linux-kernel - [PATCH v3 37/38] nfsd: track requested dir attributes

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Message-Id: <20250924-dir-deleg-v3-37-9f3af8bc5c40@kernel.org>
Date: Wed, 24 Sep 2025 14:06:23 -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 37/38] nfsd: track requested dir attributes

Track the union of the requested and supported directory attributes in
the delegation.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/nfsd/nfs4proc.c  |  7 ++++---
 fs/nfsd/nfs4state.c | 14 +++++++++++++-
 fs/nfsd/state.h     |  2 ++
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 774d18dd2f1a31d299a8426c3462847de6c88115..187daf86e62f7c94892a3b30bf2eb37bb9863595 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -2335,9 +2335,10 @@ nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	return status == nfserr_same ? nfs_ok : status;
 }

-#define SUPPORTED_NOTIFY_MASK	(BIT(NOTIFY4_REMOVE_ENTRY) |	\
-				 BIT(NOTIFY4_ADD_ENTRY) |	\
-				 BIT(NOTIFY4_RENAME_ENTRY) |	\
+#define SUPPORTED_NOTIFY_MASK	(BIT(NOTIFY4_CHANGE_DIR_ATTRS) |	\
+				 BIT(NOTIFY4_REMOVE_ENTRY) |		\
+				 BIT(NOTIFY4_ADD_ENTRY) |		\
+				 BIT(NOTIFY4_RENAME_ENTRY) |		\
 				 BIT(NOTIFY4_GFLAG_EXTEND))

 static __be32
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 368face4d0b7001914b209b858dc1baa366535f6..2381dbb2e48290debf28bbd35d0b9a4bb677ac07 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -9658,6 +9658,15 @@ nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct dentry *dentry,
 				 FATTR4_WORD1_TIME_MODIFY |	\
 				 FATTR4_WORD1_TIME_CREATE)

+#define GDD_WORD0_DIR_ATTRS	(FATTR4_WORD0_CHANGE |		\
+				 FATTR4_WORD0_SIZE)
+
+#define GDD_WORD1_DIR_ATTRS	(FATTR4_WORD1_NUMLINKS |	\
+				 FATTR4_WORD1_SPACE_USED |	\
+				 FATTR4_WORD1_TIME_ACCESS |	\
+				 FATTR4_WORD1_TIME_METADATA |	\
+				 FATTR4_WORD1_TIME_MODIFY)
+
 /**
  * nfsd_get_dir_deleg - attempt to get a directory delegation
  * @cstate: compound state
@@ -9704,10 +9713,13 @@ nfsd_get_dir_deleg(struct nfsd4_compound_state *cstate,
 	if (!dp)
 		goto out_delegees;

+	dp->dl_notify_mask = gdd->gddr_notification[0];
 	dp->dl_child_attrs[0] = gdd->gdda_child_attributes[0] & GDD_WORD0_CHILD_ATTRS;
 	dp->dl_child_attrs[1] = gdd->gdda_child_attributes[1] & GDD_WORD1_CHILD_ATTRS;
+	dp->dl_dir_attrs[0] = gdd->gdda_dir_attributes[0] & GDD_WORD0_DIR_ATTRS;
+	dp->dl_dir_attrs[1] = gdd->gdda_dir_attributes[1] & GDD_WORD1_DIR_ATTRS;

-	fl = nfs4_alloc_init_lease(dp, gdd->gddr_notification[0]);
+	fl = nfs4_alloc_init_lease(dp, dp->dl_notify_mask);
 	if (!fl)
 		goto out_put_stid;

diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 73869ae25bcdf63cc29f9ba49bdac20e21a812bd..946753d3ab6730892ba827151f2008afb46dcb57 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -283,7 +283,9 @@ struct nfs4_delegation {
 	struct timespec64	dl_ctime;

 	/* For dir delegations */
+	uint32_t		dl_notify_mask;
 	uint32_t		dl_child_attrs[2];
+	uint32_t		dl_dir_attrs[2];
 };

 static inline bool deleg_is_read(u32 dl_type)

-- 
2.51.0