ocfs2_read_virt_blocks
rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, flags,
int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
status = ocfs2_read_virt_blocks(inode, v_block, 1, bh, 0, validate);
TRACE_EVENT(ocfs2_read_virt_blocks,
rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0,