Commit 62d2cde2 authored by Mike Snitzer's avatar Mike Snitzer Committed by Anna Schumaker
Browse files

NFS: add localio to sysfs 



The Linux NFS client and server added support for LOCALIO in Linux
v6.12. It is useful to know if a client and server negotiated LOCALIO
be used, so expose it through the 'localio' attribute.

Suggested-by: default avatarAnna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
Signed-off-by: default avatarAnna Schumaker <anna.schumaker@oracle.com>
parent f72a6759

fs/nfs/sysfs.c

+28 −0
Original line number Diff line number Diff line
@@ -387,6 +387,33 @@ static inline void nfs_sysfs_add_nfsv41_server(struct nfs_server *server) 
}

#endif /* CONFIG_NFS_V4_1 */



#if IS_ENABLED(CONFIG_NFS_LOCALIO)



static ssize_t

localio_show(struct kobject *kobj, struct kobj_attribute *attr,

				char *buf)

{

	struct nfs_server *server = container_of(kobj, struct nfs_server, kobj);

	bool localio = nfs_server_is_local(server->nfs_client);

	return sysfs_emit(buf, "%d\n", localio);

}



static struct kobj_attribute nfs_sysfs_attr_localio = __ATTR_RO(localio);



static void nfs_sysfs_add_nfs_localio_server(struct nfs_server *server)

{

	int ret = sysfs_create_file_ns(&server->kobj, &nfs_sysfs_attr_localio.attr,

				       nfs_netns_server_namespace(&server->kobj));

	if (ret < 0)

		pr_warn("NFS: sysfs_create_file_ns for server-%d failed (%d)\n",

			server->s_sysfs_id, ret);

}

#else

static inline void nfs_sysfs_add_nfs_localio_server(struct nfs_server *server)

{

}

#endif /* IS_ENABLED(CONFIG_NFS_LOCALIO) */



void nfs_sysfs_add_server(struct nfs_server *server)

{

	int ret;
@@ -405,6 +432,7 @@ void nfs_sysfs_add_server(struct nfs_server *server) 
			server->s_sysfs_id, ret);



	nfs_sysfs_add_nfsv41_server(server);

	nfs_sysfs_add_nfs_localio_server(server);

}

EXPORT_SYMBOL_GPL(nfs_sysfs_add_server);