From: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
Creates the top level /sys/fs/<type> as a part of the kset.
Providing the ktype which would handle super_block entries will
be the responsibility of the FS modules.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
---
fs/filesystems.c | 7 +++++++
include/linux/fs.h | 4 +++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/fs/filesystems.c b/fs/filesystems.c
index c5618db..a47391f 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -81,6 +81,11 @@ int register_filesystem(struct file_system_type * fs)
else
*p = fs;
write_unlock(&file_systems_lock);
+ /* Filesystems to set sb_ktype only if they want
+ * core to create the sysfs entries
+ */
+ if (fs->sb_ktype)
+ fs->kset = kset_create_and_add(fs->name, NULL, fs_kobj);
return res;
}
@@ -109,6 +114,8 @@ int unregister_filesystem(struct file_system_type * fs)
*tmp = fs->next;
fs->next = NULL;
write_unlock(&file_systems_lock);
+ if (fs->kset)
+ kset_unregister(fs->kset);
synchronize_rcu();
return 0;
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 70e61b5..019546b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -35,6 +35,7 @@
#include <asm/byteorder.h>
#include <uapi/linux/fs.h>
+#include <linux/kobject.h>
struct backing_dev_info;
struct bdi_writeback;
@@ -42,7 +43,6 @@ struct export_operations;
struct hd_geometry;
struct iovec;
struct kiocb;
-struct kobject;
struct pipe_inode_info;
struct poll_table_struct;
struct kstatfs;
@@ -1996,6 +1996,8 @@ struct file_system_type {
struct lock_class_key i_lock_key;
struct lock_class_key i_mutex_key;
struct lock_class_key i_mutex_dir_key;
+ struct kobj_type *sb_ktype; /* how to handle super block's kobjects */
+ struct kset *kset; /* For /sys/fs/<type> */
};
#define MODULE_ALIAS_FS(NAME) MODULE_ALIAS("fs-" NAME)
--
2.6.6
--
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