block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n
Exclude zoned block device members from struct request_queue for
CONFIG_BLK_DEV_ZONED == n. Avoid breaking the build by only building
the code that uses these struct request_queue members if
CONFIG_BLK_DEV_ZONED != n.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Matias Bjorling <mb@lightnvm.io>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 905daa7..ca5a8b0 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -592,6 +592,7 @@ struct request_queue {
struct queue_limits limits;
+#ifdef CONFIG_BLK_DEV_ZONED
/*
* Zoned block device information for request dispatch control.
* nr_zones is the total number of zones of the device. This is always
@@ -612,6 +613,7 @@ struct request_queue {
unsigned int nr_zones;
unsigned long *seq_zones_bitmap;
unsigned long *seq_zones_wlock;
+#endif /* CONFIG_BLK_DEV_ZONED */
/*
* sg stuff
@@ -800,6 +802,7 @@ static inline unsigned int blk_queue_zone_sectors(struct request_queue *q)
return blk_queue_is_zoned(q) ? q->limits.chunk_sectors : 0;
}
+#ifdef CONFIG_BLK_DEV_ZONED
static inline unsigned int blk_queue_zone_no(struct request_queue *q,
sector_t sector)
{
@@ -815,6 +818,7 @@ static inline bool blk_queue_zone_is_seq(struct request_queue *q,
return false;
return test_bit(blk_queue_zone_no(q, sector), q->seq_zones_bitmap);
}
+#endif /* CONFIG_BLK_DEV_ZONED */
static inline bool rq_is_sync(struct request *rq)
{
@@ -1065,6 +1069,7 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
return blk_rq_cur_bytes(rq) >> SECTOR_SHIFT;
}
+#ifdef CONFIG_BLK_DEV_ZONED
static inline unsigned int blk_rq_zone_no(struct request *rq)
{
return blk_queue_zone_no(rq->q, blk_rq_pos(rq));
@@ -1074,6 +1079,7 @@ static inline unsigned int blk_rq_zone_is_seq(struct request *rq)
{
return blk_queue_zone_is_seq(rq->q, blk_rq_pos(rq));
}
+#endif /* CONFIG_BLK_DEV_ZONED */
/*
* Some commands like WRITE SAME have a payload or data transfer size which