block: don't hardcode blk_qc_t -> tag mask

Use the shift/mask we use elsewhere. Signed-off-by: N Jens Axboe <axboe@fb.com>

block: don't hardcode blk_qc_t -> tag mask
Use the shift/mask we use elsewhere. Signed-off-by: N Jens Axboe <axboe@fb.com>
e3a7a3bf · Jens Axboe · cadfbb6e · e3a7a3bf
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include/linux/blk_types.h include/linux/blk_types.h +1 -1

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--- 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 */