diff options
| author | Mike Snitzer <snitzer@kernel.org> | 2025-05-13 15:50:44 -0400 |
|---|---|---|
| committer | Anna Schumaker <anna.schumaker@oracle.com> | 2025-05-28 17:17:13 -0400 |
| commit | 62d2cde203defb6702cab2c318c3346b11cdaeac (patch) | |
| tree | e6997dc58f16bc3d5d9393aeb7896773f54f56cc | |
| parent | f72a67598cd797ac33d32cd3c10f321b51c6d9df (diff) | |
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: Anna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
| -rw-r--r-- | fs/nfs/sysfs.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c index 37cb2b776435..545148d42dcc 100644 --- a/fs/nfs/sysfs.c +++ b/fs/nfs/sysfs.c @@ -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); |