Introduce path_put()

* Add path_put() functions for releasing a reference to the dentry and
  vfsmount of a struct path in the right order

* Switch from path_release(nd) to path_put(&nd->path)

* Rename dput_path() to path_put_conditional()

[akpm@linux-foundation.org: fix cifs]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/sparc64/solaris/fs.c b/arch/sparc64/solaris/fs.c
index 516932e..7d035f0 100644
--- a/arch/sparc64/solaris/fs.c
+++ b/arch/sparc64/solaris/fs.c
@@ -436,7 +436,7 @@
 	if (!error) {
 		struct inode *inode = nd.path.dentry->d_inode;
 		error = report_statvfs(nd.path.mnt, inode, buf);
-		path_release(&nd);
+		path_put(&nd.path);
 	}
 	return error;
 }
@@ -466,7 +466,7 @@
 	if (!error) {
 		struct inode *inode = nd.path.dentry->d_inode;
 		error = report_statvfs64(nd.path.mnt, inode, buf);
-		path_release(&nd);
+		path_put(&nd.path);
 	}
 	unlock_kernel();
 	return error;