remove "struct subsystem" as it is no longer needed

We need to work on cleaning up the relationship between kobjects, ksets and
ktypes.  The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.

Thanks to Kay for fixing the bugs in this patch.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 6 insertions, 7 deletions

diff --git a/fs/ocfs2/cluster/masklog.c b/fs/ocfs2/cluster/masklog.c
index 636593bf4d17..2e975c0a35e1 100644
--- a/fs/ocfs2/cluster/masklog.c
+++ b/fs/ocfs2/cluster/masklog.c
@@ -147,7 +147,7 @@ static struct kset mlog_kset = {
         .kobj   = {.name = "logmask", .ktype = &mlog_ktype},
 };
 
-int mlog_sys_init(struct subsystem *o2cb_subsys)
+int mlog_sys_init(struct kset *o2cb_subsys)
 {
         int i = 0;
 
@@ -157,7 +157,7 @@ int mlog_sys_init(struct subsystem *o2cb_subsys)
         }
         mlog_attr_ptrs[i] = NULL;
 
-        mlog_kset.subsys = o2cb_subsys;
+        kobj_set_kset_s(&mlog_kset, o2cb_subsys);
         return kset_register(&mlog_kset);
 }
 
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index a42628ba9ddf..75cd877f6d42 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -278,7 +278,7 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 
 #include <linux/kobject.h>
 #include <linux/sysfs.h>
-int mlog_sys_init(struct subsystem *o2cb_subsys);
+int mlog_sys_init(struct kset *o2cb_subsys);
 void mlog_sys_shutdown(void);
 
 #endif /* O2CLUSTER_MASKLOG_H */
diff --git a/fs/ocfs2/cluster/sys.c b/fs/ocfs2/cluster/sys.c
index 1d9f6acafa2e..64f6f378fd09 100644
--- a/fs/ocfs2/cluster/sys.c
+++ b/fs/ocfs2/cluster/sys.c
@@ -42,7 +42,6 @@ struct o2cb_attribute {
 #define O2CB_ATTR(_name, _mode, _show, _store)  \
 struct o2cb_attribute o2cb_attr_##_name = __ATTR(_name, _mode, _show, _store)
 
-#define to_o2cb_subsys(k) container_of(to_kset(k), struct subsystem, kset)
 #define to_o2cb_attr(_attr) container_of(_attr, struct o2cb_attribute, attr)
 
 static ssize_t o2cb_interface_revision_show(char *buf)
@@ -79,7 +78,7 @@ static ssize_t
 o2cb_show(struct kobject * kobj, struct attribute * attr, char * buffer)
 {
         struct o2cb_attribute *o2cb_attr = to_o2cb_attr(attr);
-        struct subsystem *sbs = to_o2cb_subsys(kobj);
+        struct kset *sbs = to_kset(kobj);
 
         BUG_ON(sbs != &o2cb_subsys);
 
@@ -93,7 +92,7 @@ o2cb_store(struct kobject * kobj, struct attribute * attr,
              const char * buffer, size_t count)
 {
         struct o2cb_attribute *o2cb_attr = to_o2cb_attr(attr);
-        struct subsystem *sbs = to_o2cb_subsys(kobj);
+        struct kset *sbs = to_kset(kobj);
 
         BUG_ON(sbs != &o2cb_subsys);
 
@@ -112,7 +111,7 @@ int o2cb_sys_init(void)
 {
         int ret;
 
-        o2cb_subsys.kset.kobj.ktype = &o2cb_subsys_type;
+        o2cb_subsys.kobj.ktype = &o2cb_subsys_type;
         ret = subsystem_register(&o2cb_subsys);
         if (ret)
                 return ret;