#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/pagemap.h>
+#include <linux/backing-dev-defs.h>
#include <linux/gcd.h>
#include <linux/lcm.h>
#include <linux/jiffies.h>
limits->logical_block_size >> SECTOR_SHIFT);
limits->max_sectors = max_sectors;
- q->backing_dev_info->io_pages = max_sectors >> (PAGE_SHIFT - 9);
+ if (!q->disk)
+ return;
+ q->disk->bdi->io_pages = max_sectors >> (PAGE_SHIFT - 9);
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);
* For read-ahead of large files to be effective, we need to read ahead
* at least twice the optimal I/O size.
*/
- q->backing_dev_info->ra_pages =
+ disk->bdi->ra_pages =
max(queue_io_opt(q) * 2 / PAGE_SIZE, VM_READAHEAD_PAGES);
- q->backing_dev_info->io_pages =
- queue_max_sectors(q) >> (PAGE_SHIFT - 9);
+ disk->bdi->io_pages = queue_max_sectors(q) >> (PAGE_SHIFT - 9);
}
EXPORT_SYMBOL_GPL(disk_update_readahead);
void blk_queue_io_opt(struct request_queue *q, unsigned int opt)
{
blk_limits_io_opt(&q->limits, opt);
- q->backing_dev_info->ra_pages =
+ if (!q->disk)
+ return;
+ q->disk->bdi->ra_pages =
max(queue_io_opt(q) * 2 / PAGE_SIZE, VM_READAHEAD_PAGES);
}
EXPORT_SYMBOL(blk_queue_io_opt);