[PATCH] (part 7) fs/super.c cleanups

Handling of refcounts for FS_SINGLE filesystems moved to add_vfsmnt(). That's the first half of real fix for FS_SINGLE mess - we should make it "read_super() if we hadn't done it yet, otherwise return what we have". That will make kern_mount() uses simpler and remove all special-casing

[PATCH] (part 7) fs/super.c cleanups

Handling of refcounts for FS_SINGLE filesystems moved to add_vfsmnt(). That's the first half of real fix for FS_SINGLE mess - we should make it read_super() if we hadn't done it yet, otherwise return what we have. That will make kern_mount() uses simpler and remove all special-casing with