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/nfsproc.c b/fs/nfsd/nfsproc.c
index 977a71f..6cfc96a 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -41,7 +41,7 @@
 nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp)
 {
 	if (err) return err;
-	return nfserrno(vfs_getattr(resp->fh.fh_export->ex_mnt,
+	return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt,
 				    resp->fh.fh_dentry,
 				    &resp->stat));
 }
@@ -49,7 +49,7 @@
 nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp)
 {
 	if (err) return err;
-	return nfserrno(vfs_getattr(resp->fh.fh_export->ex_mnt,
+	return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt,
 				    resp->fh.fh_dentry,
 				    &resp->stat));
 }
@@ -164,7 +164,7 @@
 				  &resp->count);
 
 	if (nfserr) return nfserr;
-	return nfserrno(vfs_getattr(resp->fh.fh_export->ex_mnt,
+	return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt,
 				    resp->fh.fh_dentry,
 				    &resp->stat));
 }