diff options
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 56 |
1 files changed, 22 insertions, 34 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 0326b7322ceb..0f40fdee0899 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -1309,45 +1309,16 @@ static unsigned int drbd_backing_dev_max_segments(struct drbd_device *device) return max_segments; } -static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backing_dev *bdev, - unsigned int max_bio_size, struct o_qlim *o) -{ - struct request_queue * const q = device->rq_queue; - unsigned int max_hw_sectors = max_bio_size >> 9; - unsigned int max_segments = BLK_MAX_SEGMENTS; - struct request_queue *b = NULL; - - if (bdev) { - b = bdev->backing_bdev->bd_disk->queue; - - max_hw_sectors = min(queue_max_hw_sectors(b), max_bio_size >> 9); - max_segments = drbd_backing_dev_max_segments(device); - - blk_set_stacking_limits(&q->limits); - } - - blk_queue_max_hw_sectors(q, max_hw_sectors); - blk_queue_max_segments(q, max_segments); - blk_queue_segment_boundary(q, PAGE_SIZE-1); - decide_on_discard_support(device, bdev); - - if (b) { - blk_stack_limits(&q->limits, &b->limits, 0); - disk_update_readahead(device->vdisk); - } - fixup_write_zeroes(device, q); - fixup_discard_support(device, q); -} - void drbd_reconsider_queue_parameters(struct drbd_device *device, struct drbd_backing_dev *bdev, struct o_qlim *o) { - unsigned int now = queue_max_hw_sectors(device->rq_queue) << - SECTOR_SHIFT; + struct request_queue * const q = device->rq_queue; + unsigned int now = queue_max_hw_sectors(q) << 9; + struct request_queue *b = NULL; unsigned int new; if (bdev) { - struct request_queue *b = bdev->backing_bdev->bd_disk->queue; + b = bdev->backing_bdev->bd_disk->queue; device->local_max_bio_size = queue_max_hw_sectors(b) << SECTOR_SHIFT; @@ -1369,7 +1340,24 @@ void drbd_reconsider_queue_parameters(struct drbd_device *device, drbd_info(device, "max BIO size = %u\n", new); } - drbd_setup_queue_param(device, bdev, new, o); + if (bdev) { + blk_set_stacking_limits(&q->limits); + blk_queue_max_segments(q, + drbd_backing_dev_max_segments(device)); + } else { + blk_queue_max_segments(q, BLK_MAX_SEGMENTS); + } + + blk_queue_max_hw_sectors(q, new >> SECTOR_SHIFT); + blk_queue_segment_boundary(q, PAGE_SIZE - 1); + decide_on_discard_support(device, bdev); + + if (bdev) { + blk_stack_limits(&q->limits, &b->limits, 0); + disk_update_readahead(device->vdisk); + } + fixup_write_zeroes(device, q); + fixup_discard_support(device, q); } /* Starts the worker thread */ |