block: move elevator.h to block/
Except for the features passed to blk_queue_required_elevator_features,
elevator.h is only needed internally to the block layer. Move the
ELEVATOR_F_* definitions to blkdev.h, and the move elevator.h to
block/, dropping all the spurious includes outside of that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210920123328.1399408-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
index 85b8e1c..882ec4b 100644
--- a/block/bfq-cgroup.c
+++ b/block/bfq-cgroup.c
@@ -6,13 +6,13 @@
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/cgroup.h>
-#include <linux/elevator.h>
#include <linux/ktime.h>
#include <linux/rbtree.h>
#include <linux/ioprio.h>
#include <linux/sbitmap.h>
#include <linux/delay.h>
+#include "elevator.h"
#include "bfq-iosched.h"
#ifdef CONFIG_BFQ_CGROUP_DEBUG
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 480e1a1..b5ef23f 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -117,7 +117,6 @@
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/cgroup.h>
-#include <linux/elevator.h>
#include <linux/ktime.h>
#include <linux/rbtree.h>
#include <linux/ioprio.h>
@@ -127,6 +126,7 @@
#include <trace/events/block.h>
+#include "elevator.h"
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
index 5246ae0..5181487 100644
--- a/block/blk-mq-sched.h
+++ b/block/blk-mq-sched.h
@@ -2,6 +2,7 @@
#ifndef BLK_MQ_SCHED_H
#define BLK_MQ_SCHED_H
+#include "elevator.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index 8ed55af..f0a0ee7 100644
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -2,6 +2,8 @@
#ifndef INT_BLK_MQ_TAG_H
#define INT_BLK_MQ_TAG_H
+struct blk_mq_alloc_data;
+
/*
* Tag address space map.
*/
diff --git a/block/blk.h b/block/blk.h
index 6c3c00a..f245699 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -12,6 +12,8 @@
#include "blk-mq.h"
#include "blk-mq-sched.h"
+struct elevator_type;
+
/* Max future timer expiry for timeouts */
#define BLK_MAX_TIMEOUT (5 * HZ)
diff --git a/block/elevator.c b/block/elevator.c
index ff45d83..57be09cd 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -26,7 +26,6 @@
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
-#include <linux/elevator.h>
#include <linux/bio.h>
#include <linux/module.h>
#include <linux/slab.h>
@@ -40,6 +39,7 @@
#include <trace/events/block.h>
+#include "elevator.h"
#include "blk.h"
#include "blk-mq-sched.h"
#include "blk-pm.h"
diff --git a/include/linux/elevator.h b/block/elevator.h
similarity index 92%
rename from include/linux/elevator.h
rename to block/elevator.h
index 80633f3..16cd8bd 100644
--- a/include/linux/elevator.h
+++ b/block/elevator.h
@@ -1,17 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_ELEVATOR_H
-#define _LINUX_ELEVATOR_H
+#ifndef _ELEVATOR_H
+#define _ELEVATOR_H
#include <linux/percpu.h>
#include <linux/hashtable.h>
-#ifdef CONFIG_BLOCK
-
struct io_cq;
struct elevator_type;
-#ifdef CONFIG_BLK_DEBUG_FS
struct blk_mq_debugfs_attr;
-#endif
/*
* Return values from elevator merger
@@ -167,14 +163,4 @@ extern struct request *elv_rb_find(struct rb_root *, sector_t);
#define rq_entry_fifo(ptr) list_entry((ptr), struct request, queuelist)
#define rq_fifo_clear(rq) list_del_init(&(rq)->queuelist)
-/*
- * Elevator features.
- */
-
-/* Supports zoned block devices sequential write constraint */
-#define ELEVATOR_F_ZBD_SEQ_WRITE (1U << 0)
-/* Supports scheduling on multiple hardware queues */
-#define ELEVATOR_F_MQ_AWARE (1U << 1)
-
-#endif /* CONFIG_BLOCK */
-#endif
+#endif /* _ELEVATOR_H */
diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c
index a0ffbab..53dafc4 100644
--- a/block/kyber-iosched.c
+++ b/block/kyber-iosched.c
@@ -9,12 +9,12 @@
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
-#include <linux/elevator.h>
#include <linux/module.h>
#include <linux/sbitmap.h>
#include <trace/events/block.h>
+#include "elevator.h"
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index 7f3c393..47f042f 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -9,7 +9,6 @@
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
-#include <linux/elevator.h>
#include <linux/bio.h>
#include <linux/module.h>
#include <linux/slab.h>
@@ -20,6 +19,7 @@
#include <trace/events/block.h>
+#include "elevator.h"
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 8b17140..b892e51 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -64,7 +64,6 @@
#include <linux/mutex.h>
#include <linux/fs.h>
#include <linux/blk-mq.h>
-#include <linux/elevator.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index befeb7c..337e6ed 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -22,6 +22,7 @@
*******************************************************************/
#include <scsi/scsi_host.h>
+#include <linux/hashtable.h>
#include <linux/ktime.h>
#include <linux/workqueue.h>
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 4bcbb1a..d815238 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -251,8 +251,6 @@ static inline unsigned short req_get_ioprio(struct request *req)
return req->ioprio;
}
-#include <linux/elevator.h>
-
struct bio_vec;
enum blk_eh_timer_return {
@@ -1124,6 +1122,15 @@ extern void blk_queue_dma_alignment(struct request_queue *, int);
extern void blk_queue_update_dma_alignment(struct request_queue *, int);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);
+
+/*
+ * Elevator features for blk_queue_required_elevator_features:
+ */
+/* Supports zoned block devices sequential write constraint */
+#define ELEVATOR_F_ZBD_SEQ_WRITE (1U << 0)
+/* Supports scheduling on multiple hardware queues */
+#define ELEVATOR_F_MQ_AWARE (1U << 1)
+
extern void blk_queue_required_elevator_features(struct request_queue *q,
unsigned int features);
extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q,
diff --git a/init/main.c b/init/main.c
index 3c4054a..4162d7f 100644
--- a/init/main.c
+++ b/init/main.c
@@ -83,7 +83,6 @@
#include <linux/ptrace.h>
#include <linux/pti.h>
#include <linux/blkdev.h>
-#include <linux/elevator.h>
#include <linux/sched/clock.h>
#include <linux/sched/task.h>
#include <linux/sched/task_stack.h>
