VDA_BUFFER_HEADER_SZ  919 drivers/scsi/esas2r/esas2r.h #define VDA_MAX_BUFFER_SIZE  (0x40000 + VDA_BUFFER_HEADER_SZ)
VDA_BUFFER_HEADER_SZ 1854 drivers/scsi/esas2r/esas2r_ioctl.c 		sgc.cur_offset = a->vda_buffer + VDA_BUFFER_HEADER_SZ;