hpfs: drop vmtruncate

index 89d2a58..e7629f7 100644
@@ -105,6 +105,16 @@ static int hpfs_readpage(struct file *file, struct page *page)
 	return block_read_full_page(page,hpfs_get_block);
 }
 
+static void hpfs_write_failed(struct address_space *mapping, loff_t to)
+{
+	struct inode *inode = mapping->host;
+
+	if (to > inode->i_size) {
+		truncate_pagecache(inode, to, inode->i_size);
+		hpfs_truncate(inode);
+	}
+}
+
 static int hpfs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)

@@ -115,11 +125,8 @@ static int hpfs_write_begin(struct file *file, struct address_space *mapping,
 	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 				hpfs_get_block,
 				&hpfs_i(mapping->host)->mmu_private);
-	if (unlikely(ret)) {
-		loff_t isize = mapping->host->i_size;
-		if (pos + len > isize)
-			vmtruncate(mapping->host, isize);
-	}
+	if (unlikely(ret))
+		hpfs_write_failed(mapping, pos + len);
 
 	return ret;
 }

@@ -166,6 +173,5 @@ const struct file_operations hpfs_file_ops =
 
 const struct inode_operations hpfs_file_iops =
 {
-	.truncate	= hpfs_truncate,
 	.setattr	= hpfs_setattr,
 };

index 804a9a8..5dc06c8 100644
@@ -277,9 +277,12 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
 
 	if ((attr->ia_valid & ATTR_SIZE) &&
 	    attr->ia_size != i_size_read(inode)) {
-		error = vmtruncate(inode, attr->ia_size);
+		error = inode_newsize_ok(inode, attr->ia_size);
 		if (error)
 			goto out_unlock;
+
+		truncate_setsize(inode, attr->ia_size);
+		hpfs_truncate(inode);
 	}
 
 	setattr_copy(inode, attr);