block: get rid of elevator_t typedef

Just use struct elevator_queue everywhere instead.

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

8 files changed, 46 insertions, 44 deletions

diff --git a/block/as-iosched.c b/block/as-iosched.c
index 802b5d0d853..631f6f44460 100644
--- a/block/as-iosched.c
+++ b/block/as-iosched.c
@@ -1339,7 +1339,7 @@ static int as_may_queue(struct request_queue *q, int rw)
         return ret;
 }
 
-static void as_exit_queue(elevator_t *e)
+static void as_exit_queue(struct elevator_queue *e)
 {
         struct as_data *ad = e->elevator_data;
 
@@ -1409,7 +1409,7 @@ as_var_store(unsigned long *var, const char *page, size_t count)
         return count;
 }
 
-static ssize_t est_time_show(elevator_t *e, char *page)
+static ssize_t est_time_show(struct elevator_queue *e, char *page)
 {
         struct as_data *ad = e->elevator_data;
         int pos = 0;
@@ -1427,7 +1427,7 @@ static ssize_t est_time_show(elevator_t *e, char *page)
 }
 
 #define SHOW_FUNCTION(__FUNC, __VAR)                            \
-static ssize_t __FUNC(elevator_t *e, char *page)                \
+static ssize_t __FUNC(struct elevator_queue *e, char *page)     \
 {                                                               \
         struct as_data *ad = e->elevator_data;                  \
         return as_var_show(jiffies_to_msecs((__VAR)), (page));  \
@@ -1440,7 +1440,7 @@ SHOW_FUNCTION(as_write_batch_expire_show, ad->batch_expire[REQ_ASYNC]);
 #undef SHOW_FUNCTION
 
 #define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX)                         \
-static ssize_t __FUNC(elevator_t *e, const char *page, size_t count)    \
+static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count) \
 {                                                                       \
         struct as_data *ad = e->elevator_data;                          \
         int ret = as_var_store(__PTR, (page), count);                   \
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index a2bfec7d6b3..adaf93a9d19 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -2178,7 +2178,7 @@ static void cfq_put_async_queues(struct cfq_data *cfqd)
                 cfq_put_queue(cfqd->async_idle_cfqq);
 }
 
-static void cfq_exit_queue(elevator_t *e)
+static void cfq_exit_queue(struct elevator_queue *e)
 {
         struct cfq_data *cfqd = e->elevator_data;
         struct request_queue *q = cfqd->queue;
@@ -2288,7 +2288,7 @@ cfq_var_store(unsigned int *var, const char *page, size_t count)
 }
 
 #define SHOW_FUNCTION(__FUNC, __VAR, __CONV)                            \
-static ssize_t __FUNC(elevator_t *e, char *page)                        \
+static ssize_t __FUNC(struct elevator_queue *e, char *page)             \
 {                                                                       \
         struct cfq_data *cfqd = e->elevator_data;                       \
         unsigned int __data = __VAR;                                    \
@@ -2308,7 +2308,7 @@ SHOW_FUNCTION(cfq_slice_async_rq_show, cfqd->cfq_slice_async_rq, 0);
 #undef SHOW_FUNCTION
 
 #define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV)                 \
-static ssize_t __FUNC(elevator_t *e, const char *page, size_t count)    \
+static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count) \
 {                                                                       \
         struct cfq_data *cfqd = e->elevator_data;                       \
         unsigned int __data;                                            \
diff --git a/block/deadline-iosched.c b/block/deadline-iosched.c
index fd311179f44..c4d991d4ade 100644
--- a/block/deadline-iosched.c
+++ b/block/deadline-iosched.c
@@ -334,7 +334,7 @@ static int deadline_queue_empty(struct request_queue *q)
                 && list_empty(&dd->fifo_list[READ]);
 }
 
-static void deadline_exit_queue(elevator_t *e)
+static void deadline_exit_queue(struct elevator_queue *e)
 {
         struct deadline_data *dd = e->elevator_data;
 
@@ -387,7 +387,7 @@ deadline_var_store(int *var, const char *page, size_t count)
 }
 
 #define SHOW_FUNCTION(__FUNC, __VAR, __CONV)                            \
-static ssize_t __FUNC(elevator_t *e, char *page)                        \
+static ssize_t __FUNC(struct elevator_queue *e, char *page)             \
 {                                                                       \
         struct deadline_data *dd = e->elevator_data;                    \
         int __data = __VAR;                                             \
@@ -403,7 +403,7 @@ SHOW_FUNCTION(deadline_fifo_batch_show, dd->fifo_batch, 0);
 #undef SHOW_FUNCTION
 
 #define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV)                 \
-static ssize_t __FUNC(elevator_t *e, const char *page, size_t count)    \
+static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count) \
 {                                                                       \
         struct deadline_data *dd = e->elevator_data;                    \
         int __data;                                                     \
diff --git a/block/elevator.c b/block/elevator.c
index ff60177a3ba..98259eda0ef 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -65,7 +65,7 @@ DEFINE_TRACE(block_rq_issue);
 static int elv_iosched_allow_merge(struct request *rq, struct bio *bio)
 {
         struct request_queue *q = rq->q;
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_allow_merge_fn)
                 return e->ops->elevator_allow_merge_fn(q, rq, bio);
@@ -208,13 +208,13 @@ __setup("elevator=", elevator_setup);
 
 static struct kobj_type elv_ktype;
 
-static elevator_t *elevator_alloc(struct request_queue *q,
+static struct elevator_queue *elevator_alloc(struct request_queue *q,
                                   struct elevator_type *e)
 {
-        elevator_t *eq;
+        struct elevator_queue *eq;
         int i;
 
-        eq = kmalloc_node(sizeof(elevator_t), GFP_KERNEL | __GFP_ZERO, q->node);
+        eq = kmalloc_node(sizeof(*eq), GFP_KERNEL | __GFP_ZERO, q->node);
         if (unlikely(!eq))
                 goto err;
 
@@ -240,8 +240,9 @@ err:
 
 static void elevator_release(struct kobject *kobj)
 {
-        elevator_t *e = container_of(kobj, elevator_t, kobj);
+        struct elevator_queue *e;
 
+        e = container_of(kobj, struct elevator_queue, kobj);
         elevator_put(e->elevator_type);
         kfree(e->hash);
         kfree(e);
@@ -297,7 +298,7 @@ int elevator_init(struct request_queue *q, char *name)
 }
 EXPORT_SYMBOL(elevator_init);
 
-void elevator_exit(elevator_t *e)
+void elevator_exit(struct elevator_queue *e)
 {
         mutex_lock(&e->sysfs_lock);
         if (e->ops->elevator_exit_fn)
@@ -311,7 +312,7 @@ EXPORT_SYMBOL(elevator_exit);
 
 static void elv_activate_rq(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_activate_req_fn)
                 e->ops->elevator_activate_req_fn(q, rq);
@@ -319,7 +320,7 @@ static void elv_activate_rq(struct request_queue *q, struct request *rq)
 
 static void elv_deactivate_rq(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_deactivate_req_fn)
                 e->ops->elevator_deactivate_req_fn(q, rq);
@@ -338,7 +339,7 @@ static void elv_rqhash_del(struct request_queue *q, struct request *rq)
 
 static void elv_rqhash_add(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         BUG_ON(ELV_ON_HASH(rq));
         hlist_add_head(&rq->hash, &e->hash[ELV_HASH_FN(rq_hash_key(rq))]);
@@ -352,7 +353,7 @@ static void elv_rqhash_reposition(struct request_queue *q, struct request *rq)
 
 static struct request *elv_rqhash_find(struct request_queue *q, sector_t offset)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
         struct hlist_head *hash_list = &e->hash[ELV_HASH_FN(offset)];
         struct hlist_node *entry, *next;
         struct request *rq;
@@ -494,7 +495,7 @@ EXPORT_SYMBOL(elv_dispatch_add_tail);
 
 int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
         struct request *__rq;
         int ret;
 
@@ -529,7 +530,7 @@ int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
 
 void elv_merged_request(struct request_queue *q, struct request *rq, int type)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_merged_fn)
                 e->ops->elevator_merged_fn(q, rq, type);
@@ -543,7 +544,7 @@ void elv_merged_request(struct request_queue *q, struct request *rq, int type)
 void elv_merge_requests(struct request_queue *q, struct request *rq,
                              struct request *next)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_merge_req_fn)
                 e->ops->elevator_merge_req_fn(q, rq, next);
@@ -846,7 +847,7 @@ void elv_dequeue_request(struct request_queue *q, struct request *rq)
 
 int elv_queue_empty(struct request_queue *q)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (!list_empty(&q->queue_head))
                 return 0;
@@ -860,7 +861,7 @@ EXPORT_SYMBOL(elv_queue_empty);
 
 struct request *elv_latter_request(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_latter_req_fn)
                 return e->ops->elevator_latter_req_fn(q, rq);
@@ -869,7 +870,7 @@ struct request *elv_latter_request(struct request_queue *q, struct request *rq)
 
 struct request *elv_former_request(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_former_req_fn)
                 return e->ops->elevator_former_req_fn(q, rq);
@@ -878,7 +879,7 @@ struct request *elv_former_request(struct request_queue *q, struct request *rq)
 
 int elv_set_request(struct request_queue *q, struct request *rq, gfp_t gfp_mask)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_set_req_fn)
                 return e->ops->elevator_set_req_fn(q, rq, gfp_mask);
@@ -889,7 +890,7 @@ int elv_set_request(struct request_queue *q, struct request *rq, gfp_t gfp_mask)
 
 void elv_put_request(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_put_req_fn)
                 e->ops->elevator_put_req_fn(rq);
@@ -897,7 +898,7 @@ void elv_put_request(struct request_queue *q, struct request *rq)
 
 int elv_may_queue(struct request_queue *q, int rw)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         if (e->ops->elevator_may_queue_fn)
                 return e->ops->elevator_may_queue_fn(q, rw);
@@ -920,7 +921,7 @@ EXPORT_SYMBOL(elv_abort_queue);
 
 void elv_completed_request(struct request_queue *q, struct request *rq)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
 
         /*
          * request is released from the driver, io must be done
@@ -955,13 +956,14 @@ void elv_completed_request(struct request_queue *q, struct request *rq)
 static ssize_t
 elv_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
 {
-        elevator_t *e = container_of(kobj, elevator_t, kobj);
         struct elv_fs_entry *entry = to_elv(attr);
+        struct elevator_queue *e;
         ssize_t error;
 
         if (!entry->show)
                 return -EIO;
 
+        e = container_of(kobj, struct elevator_queue, kobj);
         mutex_lock(&e->sysfs_lock);
         error = e->ops ? entry->show(e, page) : -ENOENT;
         mutex_unlock(&e->sysfs_lock);
@@ -972,13 +974,14 @@ static ssize_t
 elv_attr_store(struct kobject *kobj, struct attribute *attr,
                const char *page, size_t length)
 {
-        elevator_t *e = container_of(kobj, elevator_t, kobj);
         struct elv_fs_entry *entry = to_elv(attr);
+        struct elevator_queue *e;
         ssize_t error;
 
         if (!entry->store)
                 return -EIO;
 
+        e = container_of(kobj, struct elevator_queue, kobj);
         mutex_lock(&e->sysfs_lock);
         error = e->ops ? entry->store(e, page, length) : -ENOENT;
         mutex_unlock(&e->sysfs_lock);
@@ -997,7 +1000,7 @@ static struct kobj_type elv_ktype = {
 
 int elv_register_queue(struct request_queue *q)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
         int error;
 
         error = kobject_add(&e->kobj, &q->kobj, "%s", "iosched");
@@ -1015,7 +1018,7 @@ int elv_register_queue(struct request_queue *q)
         return error;
 }
 
-static void __elv_unregister_queue(elevator_t *e)
+static void __elv_unregister_queue(struct elevator_queue *e)
 {
         kobject_uevent(&e->kobj, KOBJ_REMOVE);
         kobject_del(&e->kobj);
@@ -1078,7 +1081,7 @@ EXPORT_SYMBOL_GPL(elv_unregister);
  */
 static int elevator_switch(struct request_queue *q, struct elevator_type *new_e)
 {
-        elevator_t *old_elevator, *e;
+        struct elevator_queue *old_elevator, *e;
         void *data;
 
         /*
@@ -1184,7 +1187,7 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *name,
 
 ssize_t elv_iosched_show(struct request_queue *q, char *name)
 {
-        elevator_t *e = q->elevator;
+        struct elevator_queue *e = q->elevator;
         struct elevator_type *elv = e->elevator_type;
         struct elevator_type *__e;
         int len = 0;
diff --git a/block/noop-iosched.c b/block/noop-iosched.c
index c23e0296965..3a0d369d08c 100644
--- a/block/noop-iosched.c
+++ b/block/noop-iosched.c
@@ -76,7 +76,7 @@ static void *noop_init_queue(struct request_queue *q)
         return nd;
 }
 
-static void noop_exit_queue(elevator_t *e)
+static void noop_exit_queue(struct elevator_queue *e)
 {
         struct noop_data *nd = e->elevator_data;
 
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index d3a91cacee8..0766ce6187a 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -722,7 +722,7 @@ static int __init nbd_init(void)
 
         for (i = 0; i < nbds_max; i++) {
                 struct gendisk *disk = alloc_disk(1 << part_shift);
-                elevator_t *old_e;
+                struct elevator_queue *old_e;
                 if (!disk)
                         goto out;
                 nbd_dev[i].disk = disk;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 41bbadfd17f..7035cec583b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -26,7 +26,6 @@ struct scsi_ioctl_command;
 
 struct request_queue;
 struct elevator_queue;
-typedef struct elevator_queue elevator_t;
 struct request_pm_state;
 struct blk_trace;
 struct request;
@@ -313,7 +312,7 @@ struct request_queue
          */
         struct list_head        queue_head;
         struct request          *last_merge;
-        elevator_t              *elevator;
+        struct elevator_queue   *elevator;
 
         /*
          * the queue request freelist, one for reads and one for writes
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 92f6f634e3e..7a204256b15 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -28,7 +28,7 @@ typedef void (elevator_activate_req_fn) (struct request_queue *, struct request
 typedef void (elevator_deactivate_req_fn) (struct request_queue *, struct request *);
 
 typedef void *(elevator_init_fn) (struct request_queue *);
-typedef void (elevator_exit_fn) (elevator_t *);
+typedef void (elevator_exit_fn) (struct elevator_queue *);
 
 struct elevator_ops
 {
@@ -62,8 +62,8 @@ struct elevator_ops
 
 struct elv_fs_entry {
         struct attribute attr;
-        ssize_t (*show)(elevator_t *, char *);
-        ssize_t (*store)(elevator_t *, const char *, size_t);
+        ssize_t (*show)(struct elevator_queue *, char *);
+        ssize_t (*store)(struct elevator_queue *, const char *, size_t);
 };
 
 /*
@@ -130,7 +130,7 @@ extern ssize_t elv_iosched_show(struct request_queue *, char *);
 extern ssize_t elv_iosched_store(struct request_queue *, const char *, size_t);
 
 extern int elevator_init(struct request_queue *, char *);
-extern void elevator_exit(elevator_t *);
+extern void elevator_exit(struct elevator_queue *);
 extern int elv_rq_merge_ok(struct request *, struct bio *);
 
 /*