From: Jens Axboe <axboe@fb.com>
Date: Wed, 11 Nov 2015 16:37:34 +0000 (-0700)
Subject: block: don't hardcode blk_qc_t -> tag mask
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e3a7a3bf362e2a8acc301e5eaec2631e740a8a95;p=linux-beck.git

block: don't hardcode blk_qc_t -> tag mask

Use the shift/mask we use elsewhere.

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 641e5a3ed58c..0fb65843ec1e 100644
--- 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 */