block: Use pointer to backing_dev_info from request_queue
We will want to have struct backing_dev_info allocated separately from
struct request_queue. As the first step add pointer to backing_dev_info
to request_queue and convert all users touching it. No functional
changes in this patch.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 894f773..05841be 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -89,7 +89,7 @@ queue_requests_store(struct request_queue *q, const char *page, size_t count)
static ssize_t queue_ra_show(struct request_queue *q, char *page)
{
- unsigned long ra_kb = q->backing_dev_info.ra_pages <<
+ unsigned long ra_kb = q->backing_dev_info->ra_pages <<
(PAGE_SHIFT - 10);
return queue_var_show(ra_kb, (page));
@@ -104,7 +104,7 @@ queue_ra_store(struct request_queue *q, const char *page, size_t count)
if (ret < 0)
return ret;
- q->backing_dev_info.ra_pages = ra_kb >> (PAGE_SHIFT - 10);
+ q->backing_dev_info->ra_pages = ra_kb >> (PAGE_SHIFT - 10);
return ret;
}
@@ -236,7 +236,7 @@ queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)
spin_lock_irq(q->queue_lock);
q->limits.max_sectors = max_sectors_kb << 1;
- q->backing_dev_info.io_pages = max_sectors_kb >> (PAGE_SHIFT - 10);
+ q->backing_dev_info->io_pages = max_sectors_kb >> (PAGE_SHIFT - 10);
spin_unlock_irq(q->queue_lock);
return ret;
@@ -799,7 +799,7 @@ static void blk_release_queue(struct kobject *kobj)
container_of(kobj, struct request_queue, kobj);
wbt_exit(q);
- bdi_exit(&q->backing_dev_info);
+ bdi_exit(q->backing_dev_info);
blkcg_exit_queue(q);
if (q->elevator) {
