Use struct path in struct svc_export

I'm embedding struct path into struct svc_export.

[akpm@linux-foundation.org: coding-style fixes]
[ezk@cs.sunysb.edu: NFSD: fix wrong mnt_writer count in rename]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Acked-by: J. Bruce Fields <bfields@citi.umich.edu>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index b0592e7..0e6a179 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1330,9 +1330,9 @@
 	*stat = exp_pseudoroot(rqstp, &tmp_fh);
 	if (*stat)
 		return NULL;
-	rootpath = tmp_fh.fh_export->ex_path;
+	rootpath = tmp_fh.fh_export->ex_pathname;
 
-	path = exp->ex_path;
+	path = exp->ex_pathname;
 
 	if (strncmp(path, rootpath, strlen(rootpath))) {
 		dprintk("nfsd: fs_locations failed;"
@@ -1481,7 +1481,7 @@
 			goto out;
 	}
 
-	err = vfs_getattr(exp->ex_mnt, dentry, &stat);
+	err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
 	if (err)
 		goto out_nfserr;
 	if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
@@ -1838,9 +1838,9 @@
 		 * and this is the root of a cross-mounted filesystem.
 		 */
 		if (ignore_crossmnt == 0 &&
-		    exp->ex_mnt->mnt_root->d_inode == dentry->d_inode) {
-			err = vfs_getattr(exp->ex_mnt->mnt_parent,
-				exp->ex_mnt->mnt_mountpoint, &stat);
+		    exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
+			err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
+				exp->ex_path.mnt->mnt_mountpoint, &stat);
 			if (err)
 				goto out_nfserr;
 		}