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Diffstat (limited to 'block/blk-settings.c')
-rw-r--r--block/blk-settings.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 44aaef9bf736..3613d2cc0688 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -8,6 +8,7 @@
#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>
@@ -140,7 +141,9 @@ void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_secto
limits->logical_block_size >> SECTOR_SHIFT);
limits->max_sectors = max_sectors;
- q->backing_dev_info->io_pages = max_sectors >> (PAGE_SHIFT - 9);
+ if (!queue_has_disk(q))
+ return;
+ queue_to_disk(q)->bdi->io_pages = max_sectors >> (PAGE_SHIFT - 9);
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);
@@ -388,10 +391,9 @@ void disk_update_readahead(struct gendisk *disk)
* 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);
@@ -473,7 +475,9 @@ EXPORT_SYMBOL(blk_limits_io_opt);
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 (!queue_has_disk(q))
+ return;
+ queue_to_disk(q)->bdi->ra_pages =
max(queue_io_opt(q) * 2 / PAGE_SIZE, VM_READAHEAD_PAGES);
}
EXPORT_SYMBOL(blk_queue_io_opt);