vfs: new helper - vfs_ustat()

... and bury user_get_super()/statfs_by_dentry() - they are
purely internal now.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 8 deletions

diff --git a/fs/compat.c b/fs/compat.c
index c98787536bb8..9db5a6076610 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -342,16 +342,9 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c
  */
 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u)
 {
-        struct super_block *sb;
         struct compat_ustat tmp;
         struct kstatfs sbuf;
-        int err;
-
-        sb = user_get_super(new_decode_dev(dev));
-        if (!sb)
-                return -EINVAL;
-        err = statfs_by_dentry(sb->s_root, &sbuf);
-        drop_super(sb);
+        int err = vfs_ustat(new_decode_dev(dev), &sbuf);
         if (err)
                 return err;