block: kmalloc args reversed, small function definition fixes

Noticed by sparse:
block/blk-softirq.c:156:12: warning: symbol 'blk_softirq_init' was not declared. Should it be static?
block/genhd.c:583:28: warning: function 'bdget_disk' with external linkage has definition
block/genhd.c:659:17: warning: incorrect type in argument 1 (different base types)
block/genhd.c:659:17:    expected unsigned int [unsigned] [usertype] size
block/genhd.c:659:17:    got restricted gfp_t
block/genhd.c:659:29: warning: incorrect type in argument 2 (different base types)
block/genhd.c:659:29:    expected restricted gfp_t [usertype] flags
block/genhd.c:659:29:    got unsigned int
block: kmalloc args reversed

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

block/blk-settings.c

@@ -443,7 +443,7 @@ void blk_queue_update_dma_alignment(struct request_queue *q, int mask)
 }
 EXPORT_SYMBOL(blk_queue_update_dma_alignment);
 
-int __init blk_settings_init(void)
+static int __init blk_settings_init(void)
 {
 	blk_max_low_pfn = max_low_pfn - 1;
 	blk_max_pfn = max_pfn - 1;

block/genhd.c

@@ -578,7 +578,7 @@ struct gendisk *get_gendisk(dev_t devt, int *partno)
  * RETURNS:
  * Resulting block_device on success, NULL on failure.
  */
-extern struct block_device *bdget_disk(struct gendisk *disk, int partno)
+struct block_device *bdget_disk(struct gendisk *disk, int partno)
 {
 	struct hd_struct *part;
 	struct block_device *bdev = NULL;
@@ -654,7 +654,7 @@ static void *disk_seqf_start(struct seq_file *seqf, loff_t *pos)
 	struct class_dev_iter *iter;
 	struct device *dev;
 
-	iter = kmalloc(GFP_KERNEL, sizeof(*iter));
+	iter = kmalloc(sizeof(*iter), GFP_KERNEL);
 	if (!iter)
 		return ERR_PTR(-ENOMEM);