block: don't hardcode blk_qc_t -> tag mask

Use the shift/mask we use elsewhere.

Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2015-11-11 09:37:34 -07:00
parent cadfbb6ec2
commit e3a7a3bf36

View File

@ -265,7 +265,7 @@ static inline unsigned int blk_qc_t_to_queue_num(blk_qc_t cookie)
static inline unsigned int blk_qc_t_to_tag(blk_qc_t cookie)
{
return cookie & 0xffff;
return cookie & ((1u << BLK_QC_T_SHIFT) - 1);
}
#endif /* __LINUX_BLK_TYPES_H */