Just use the generic anon_inode file system.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
  drivers/misc/vmw_balloon.c | 24 ++----------------------
  1 file changed, 2 insertions(+), 22 deletions(-)

diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index 5d057a05ddbee8..be4be32f858253 100644
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c

@@ -16,6 +16,7 @@
  //#define DEBUG
  #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  
+#include <linux/anon_inodes.h>
  #include <linux/types.h>
  #include <linux/io.h>
  #include <linux/kernel.h>

@@ -1735,20 +1736,6 @@ static inline void vmballoon_debugfs_exit(struct vmballoon *b)
  
  
  #ifdef CONFIG_BALLOON_COMPACTION
-
-static int vmballoon_init_fs_context(struct fs_context *fc)
-{
-	return init_pseudo(fc, BALLOON_VMW_MAGIC) ? 0 : -ENOMEM;
-}
-
-static struct file_system_type vmballoon_fs = {
-	.name           	= "balloon-vmware",
-	.init_fs_context	= vmballoon_init_fs_context,
-	.kill_sb        	= kill_anon_super,
-};
-
-static struct vfsmount *vmballoon_mnt;
-
  /**
   * vmballoon_migratepage() - migrates a balloon page.
   * @b_dev_info: balloon device information descriptor.

@@ -1878,8 +1865,6 @@ static void vmballoon_compaction_deinit(struct vmballoon *b)
  		iput(b->b_dev_info.inode);
  
  	b->b_dev_info.inode = NULL;
-	kern_unmount(vmballoon_mnt);
-	vmballoon_mnt = NULL;
  }
  
  /**

@@ -1895,13 +1880,8 @@ static void vmballoon_compaction_deinit(struct vmballoon *b)
   */
  static __init int vmballoon_compaction_init(struct vmballoon *b)
  {
-	vmballoon_mnt = kern_mount(&vmballoon_fs);
-	if (IS_ERR(vmballoon_mnt))
-		return PTR_ERR(vmballoon_mnt);
-
  	b->b_dev_info.migratepage = vmballoon_migratepage;
-	b->b_dev_info.inode = alloc_anon_inode_sb(vmballoon_mnt->mnt_sb);
-
+	b->b_dev_info.inode = alloc_anon_inode();
  	if (IS_ERR(b->b_dev_info.inode))
  		return PTR_ERR(b->b_dev_info.inode);