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Message-Id: <20240315-dir-deleg-v1-24-a1d6209a3654@kernel.org>
Date: Fri, 15 Mar 2024 12:53:15 -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 <trond.myklebust@...merspace.com>,
Anna Schumaker <anna@...nel.org>, Steve French <sfrench@...ba.org>,
Paulo Alcantara <pc@...guebit.com>,
Ronnie Sahlberg <ronniesahlberg@...il.com>,
Shyam Prasad N <sprasad@...rosoft.com>, Tom Talpey <tom@...pey.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
David Howells <dhowells@...hat.com>, Tyler Hicks <code@...icks.com>,
Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>,
Dai Ngo <Dai.Ngo@...cle.com>, Miklos Szeredi <miklos@...redi.hu>,
Amir Goldstein <amir73il@...il.com>, Namjae Jeon <linkinjeon@...nel.org>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
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Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: 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, netfs@...ts.linux.dev,
ecryptfs@...r.kernel.org, linux-unionfs@...r.kernel.org,
netdev@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH RFC 24/24] nfs: add a module parameter to disable directory
delegations
For testing purposes, add a module parameter that will prevent the
client from requesting further directory delegations.
Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
fs/nfs/nfs4proc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3dbe9a18c9be..a85a594cad88 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4318,8 +4318,14 @@ static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
return status;
}
+static bool nfs_dir_delegation_enabled = true;
+module_param(nfs_dir_delegation_enabled, bool, 0644);
+MODULE_PARM_DESC(nfs_dir_delegation_enabled, "Enable directory delegations?");
+
static bool should_request_dir_deleg(struct inode *inode)
{
+ if (!nfs_dir_delegation_enabled)
+ return false;
if (!inode)
return false;
if (!S_ISDIR(inode->i_mode))
--
2.44.0
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