[PATCH] elevator: elv_list_lock does not need irq disabling

It's never grabbed from irq context, so just make it plain spin_lock().

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

1 files changed, 9 insertions, 8 deletions

diff --git a/block/elevator.c b/block/elevator.c
index 96a00c822748..ce866eb75f6a 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -134,13 +134,13 @@ static struct elevator_type *elevator_get(const char *name)
 {
         struct elevator_type *e;
 
-        spin_lock_irq(&elv_list_lock);
+        spin_lock(&elv_list_lock);
 
         e = elevator_find(name);
         if (e && !try_module_get(e->elevator_owner))
                 e = NULL;
 
-        spin_unlock_irq(&elv_list_lock);
+        spin_unlock(&elv_list_lock);
 
         return e;
 }
@@ -965,10 +965,11 @@ void elv_unregister_queue(struct request_queue *q)
 int elv_register(struct elevator_type *e)
 {
         char *def = "";
-        spin_lock_irq(&elv_list_lock);
+
+        spin_lock(&elv_list_lock);
         BUG_ON(elevator_find(e->elevator_name));
         list_add_tail(&e->list, &elv_list);
-        spin_unlock_irq(&elv_list_lock);
+        spin_unlock(&elv_list_lock);
 
         if (!strcmp(e->elevator_name, chosen_elevator) ||
                         (!*chosen_elevator &&
@@ -998,9 +999,9 @@ void elv_unregister(struct elevator_type *e)
                 read_unlock(&tasklist_lock);
         }
 
-        spin_lock_irq(&elv_list_lock);
+        spin_lock(&elv_list_lock);
         list_del_init(&e->list);
-        spin_unlock_irq(&elv_list_lock);
+        spin_unlock(&elv_list_lock);
 }
 EXPORT_SYMBOL_GPL(elv_unregister);
 
@@ -1118,7 +1119,7 @@ ssize_t elv_iosched_show(request_queue_t *q, char *name)
         struct list_head *entry;
         int len = 0;
 
-        spin_lock_irq(&elv_list_lock);
+        spin_lock(&elv_list_lock);
         list_for_each(entry, &elv_list) {
                 struct elevator_type *__e;
 
@@ -1128,7 +1129,7 @@ ssize_t elv_iosched_show(request_queue_t *q, char *name)
                 else
                         len += sprintf(name+len, "%s ", __e->elevator_name);
         }
-        spin_unlock_irq(&elv_list_lock);
+        spin_unlock(&elv_list_lock);
 
         len += sprintf(len+name, "\n");
         return len;