Re: [PATCH v2 1/5] scsi: core: Add helper to return number of logical blocks in a request
From: Bart Van Assche <bvanassche@acm.org>
Date: 2021-08-09 21:54:56
On 8/5/21 9:00 PM, Martin K. Petersen wrote:
quoted hunk ↗ jump to hunk
Cc: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> --- include/scsi/scsi_cmnd.h | 7 +++++++ 1 file changed, 7 insertions(+)diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 90da9617d28a..804b2b33da4a 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h@@ -232,6 +232,13 @@ static inline sector_t scsi_get_lba(struct scsi_cmnd *scmd) return blk_rq_pos(scmd->request) >> 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(scmd->request) >> shift; +}
Reviewed-by: Bart Van Assche <bvanassche@acm.org>