block: don't hardcode blk_qc_t -> tag mask

Use the shift/mask we use elsewhere. Signed-off-by: Jens Axboe <[email protected]>
pkahlert · Nov 11, 2015 · e3a7a3b · e3a7a3b
1 parent cadfbb6
commit e3a7a3b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
@@ -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 */