[RFC PATCH 17/20] famfs: Add module stuff

John Groves
2024-02-23T17:43:06Z

This commit introduces the module init and exit machinery for famfs.

Signed-off-by: John Groves <john@groves.net>
---
fs/famfs/famfs_inode.c | 44 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)

diff --git a/fs/famfs/famfs_inode.c b/fs/famfs/famfs_inode.c
index ab46ec50b70d..0d659820e8ff 100644
--- a/fs/famfs/famfs_inode.c
+++ b/fs/famfs/famfs_inode.c
@@ -462,4 +462,48 @@ static struct file_system_type famfs_fs_type = {
.fs_flags = FS_USERNS_MOUNT,
};

+/*****************************************************************************************
+ * Module stuff
+ */
+static struct kobject *famfs_kobj;
+
+static int __init init_famfs_fs(void)
+{
+ int rc;
+
+#if defined(CONFIG_DEV_DAX_IOMAP)
+ pr_notice("%s: Your kernel supports famfs on /dev/dax\n", __func__);
+#else
+ pr_notice("%s: Your kernel does not support famfs on /dev/dax\n", __func__);
+#endif
+ famfs_kobj = kobject_create_and_add(MODULE_NAME, fs_kobj);
+ if (!famfs_kobj) {
+ pr_warn("Failed to create kobject\n");
+ return -ENOMEM;
+ }
+
+ rc = sysfs_create_group(famfs_kobj, &famfs_attr_group);
+ if (rc) {
+ kobject_put(famfs_kobj);
+ pr_warn("%s: Failed to create sysfs group\n", __func__);
+ return rc;
+ }
+
+ return register_filesystem(&famfs_fs_type);
+}
+
+static void
+__exit famfs_exit(void)
+{
+ sysfs_remove_group(famfs_kobj, &famfs_attr_group);
+ kobject_put(famfs_kobj);
+ unregister_filesystem(&famfs_fs_type);
+ pr_info("%s: unregistered\n", __func__);
+}
+
+
+fs_initcall(init_famfs_fs);
+module_exit(famfs_exit);
+
+MODULE_AUTHOR("John Groves, Micron Technology");
MODULE_LICENSE("GPL");
--
2.43.0