__es_insert_extent
__es_insert_extent(inode, &newes, NULL);
err = __es_insert_extent(inode, &newes, prealloc);
static int __es_insert_extent(struct inode *inode, struct extent_status *newes,
err2 = __es_insert_extent(inode, &newes, es2);
err2 = __es_insert_extent(inode, &newes, es2);