sysfs: move struct sysfs_dirent to private header

struct sysfs_dirent is private to the fs/sysfs/ subtree.  It is
not even referenced as an opaque structure outside of that subtree.

The following patch moves the declaration from include/linux/sysfs.h to
fs/sysfs/sysfs.h, making it clearer that nothing else in the kernel
dereferences it.

I have been running this patch for years.  Please integrate and forward
upstream if there are no objections.

From: "Adam J. Richter" <adam@yggdrasil.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index d976b0005549..a77c57e5a6d5 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -1,3 +1,14 @@
+struct sysfs_dirent {
+        atomic_t                s_count;
+        struct list_head        s_sibling;
+        struct list_head        s_children;
+        void                    * s_element;
+        int                     s_type;
+        umode_t                 s_mode;
+        struct dentry           * s_dentry;
+        struct iattr            * s_iattr;
+        atomic_t                s_event;
+};
 
 extern struct vfsmount * sysfs_mount;
 extern struct kmem_cache *sysfs_dir_cachep;