sysfs, kernfs: make super_blocks bind to different kernfs_roots

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / sysfs / sysfs.h

diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 6d0dcea..93b4b68 100644 (file)
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -18,17 +18,23 @@
  * mount.c
  */
 
-/*
- * Each sb is associated with one namespace tag, currently the network
- * namespace of the task which mounted this sysfs instance.  If multiple
- * tags become necessary, make the following an array and compare
- * sysfs_dirent tag against every entry.
- */
 struct sysfs_super_info {
-       void *ns;
+       /*
+        * The root associated with this super_block.  Each super_block is
+        * identified by the root and ns it's associated with.
+        */
+       struct kernfs_root      *root;
+
+       /*
+        * Each sb is associated with one namespace tag, currently the network
+        * namespace of the task which mounted this sysfs instance.  If multiple
+        * tags become necessary, make the following an array and compare
+        * sysfs_dirent tag against every entry.
+        */
+       const void              *ns;
 };
 #define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info))
-extern struct sysfs_dirent sysfs_root;
+extern struct sysfs_dirent *sysfs_root_sd;
 extern struct kmem_cache *sysfs_dir_cachep;
 
 /*