diff options
Diffstat (limited to 'include/scsi/scsi_cmnd.h')
| -rw-r--r-- | include/scsi/scsi_cmnd.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index ddc9671b325b..6c5a1c1c6b1e 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -237,6 +237,13 @@ static inline sector_t scsi_get_lba(struct scsi_cmnd *scmd) return blk_rq_pos(scsi_cmd_to_rq(scmd)) >> shift; } +static inline unsigned int scsi_logical_block_count(struct scsi_cmnd *scmd) +{ + unsigned int shift = ilog2(scmd->device->sector_size) - SECTOR_SHIFT; + + return blk_rq_bytes(scsi_cmd_to_rq(scmd)) >> shift; +} + /* * The operations below are hints that tell the controller driver how * to handle I/Os with DIF or similar types of protection information. |