[PATCH 3/6] block: add a bool member to request_queue for power_of_2 emulation

[Pankaj Raghav]

A new member is added to request_queue struct to indicate if power_of_2
emulation is enabled. Helpers are also added to get and set that member.

Signed-off-by: Pankaj Raghav <p.raghav at samsung.com>
---
 include/linux/blkdev.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 08cf039c1622..3a5d5ddc779c 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -463,6 +463,7 @@ struct request_queue {
 	unsigned long		*seq_zones_wlock;
 	unsigned int		max_open_zones;
 	unsigned int		max_active_zones;
+	bool			po2_zone_emu;
 #endif /* CONFIG_BLK_DEV_ZONED */
 
 	int			node;
@@ -705,6 +706,18 @@ static inline unsigned int queue_max_active_zones(const struct request_queue *q)
 {
 	return q->max_active_zones;
 }
+
+static inline void blk_queue_po2_zone_emu(struct request_queue *q,
+					  bool po2_zone_emu)
+{
+	q->po2_zone_emu = po2_zone_emu;
+}
+
+static inline bool blk_queue_is_po2_zone_emu(struct request_queue *q)
+{
+	return q->po2_zone_emu;
+}
+
 #else /* CONFIG_BLK_DEV_ZONED */
 static inline unsigned int blk_queue_nr_zones(struct request_queue *q)
 {
@@ -728,6 +741,17 @@ static inline unsigned int queue_max_active_zones(const struct request_queue *q)
 {
 	return 0;
 }
+
+static inline bool blk_queue_is_po2_zone_emu(struct request_queue *q)
+{
+	return false;
+}
+
+static inline void blk_queue_po2_zone_emu(struct request_queue *q,
+					  unsigned int po2_zone_emu)
+{
+}
+
 #endif /* CONFIG_BLK_DEV_ZONED */
 
 static inline unsigned int blk_queue_depth(struct request_queue *q)
-- 
2.25.1