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Commit 31cc1dd3 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://neil.brown.name/md 

* 'for-linus' of git://neil.brown.name/md:
  md: deal with merge_bvec_fn in component devices better.
parents 961cde93 627a2d3c

drivers/md/linear.c

+7 −5
Original line number Diff line number Diff line
@@ -172,12 +172,14 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks) 
		disk_stack_limits(mddev->gendisk, rdev->bdev,

				  rdev->data_offset << 9);

		/* as we don't honour merge_bvec_fn, we must never risk

		 * violating it, so limit ->max_sector to one PAGE, as

		 * a one page request is never in violation.

		 * violating it, so limit max_segments to 1 lying within

		 * a single page.

		 */

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn &&

		    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

			blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn) {

			blk_queue_max_segments(mddev->queue, 1);

			blk_queue_segment_boundary(mddev->queue,

						   PAGE_CACHE_SIZE - 1);

		}



		conf->array_sectors += rdev->sectors;

		cnt++;

drivers/md/multipath.c

+12 −8
Original line number Diff line number Diff line
@@ -301,14 +301,16 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) 
					  rdev->data_offset << 9);



		/* as we don't honour merge_bvec_fn, we must never risk

		 * violating it, so limit ->max_sector to one PAGE, as

		 * a one page request is never in violation.

		 * violating it, so limit ->max_segments to one, lying

		 * within a single page.

		 * (Note: it is very unlikely that a device with

		 * merge_bvec_fn will be involved in multipath.)

		 */

			if (q->merge_bvec_fn &&

			    queue_max_sectors(q) > (PAGE_SIZE>>9))

				blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

			if (q->merge_bvec_fn) {

				blk_queue_max_segments(mddev->queue, 1);

				blk_queue_segment_boundary(mddev->queue,

							   PAGE_CACHE_SIZE - 1);

			}



			conf->working_disks++;

			mddev->degraded--;
@@ -476,9 +478,11 @@ static int multipath_run (mddev_t *mddev) 
		/* as we don't honour merge_bvec_fn, we must never risk

		 * violating it, not that we ever expect a device with

		 * a merge_bvec_fn to be involved in multipath */

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn &&

		    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

			blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn) {

			blk_queue_max_segments(mddev->queue, 1);

			blk_queue_segment_boundary(mddev->queue,

						   PAGE_CACHE_SIZE - 1);

		}



		if (!test_bit(Faulty, &rdev->flags))

			conf->working_disks++;

drivers/md/raid0.c

+7 −6
Original line number Diff line number Diff line
@@ -176,14 +176,15 @@ static int create_strip_zones(mddev_t *mddev) 
		disk_stack_limits(mddev->gendisk, rdev1->bdev,

				  rdev1->data_offset << 9);

		/* as we don't honour merge_bvec_fn, we must never risk

		 * violating it, so limit ->max_sector to one PAGE, as

		 * a one page request is never in violation.

		 * violating it, so limit ->max_segments to 1, lying within

		 * a single page.

		 */



		if (rdev1->bdev->bd_disk->queue->merge_bvec_fn &&

		    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

			blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);



		if (rdev1->bdev->bd_disk->queue->merge_bvec_fn) {

			blk_queue_max_segments(mddev->queue, 1);

			blk_queue_segment_boundary(mddev->queue,

						   PAGE_CACHE_SIZE - 1);

		}

		if (!smallest || (rdev1->sectors < smallest->sectors))

			smallest = rdev1;

		cnt++;

drivers/md/raid1.c

+17 −11
Original line number Diff line number Diff line
@@ -1152,13 +1152,17 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) 


			disk_stack_limits(mddev->gendisk, rdev->bdev,

					  rdev->data_offset << 9);

			/* as we don't honour merge_bvec_fn, we must never risk

			 * violating it, so limit ->max_sector to one PAGE, as

			 * a one page request is never in violation.

			/* as we don't honour merge_bvec_fn, we must

			 * never risk violating it, so limit

			 * ->max_segments to one lying with a single

			 * page, as a one page request is never in

			 * violation.

			 */

			if (rdev->bdev->bd_disk->queue->merge_bvec_fn &&

			    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

				blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

			if (rdev->bdev->bd_disk->queue->merge_bvec_fn) {

				blk_queue_max_segments(mddev->queue, 1);

				blk_queue_segment_boundary(mddev->queue,

							   PAGE_CACHE_SIZE - 1);

			}



			p->head_position = 0;

			rdev->raid_disk = mirror;
@@ -2098,12 +2102,14 @@ static int run(mddev_t *mddev) 
		disk_stack_limits(mddev->gendisk, rdev->bdev,

				  rdev->data_offset << 9);

		/* as we don't honour merge_bvec_fn, we must never risk

		 * violating it, so limit ->max_sector to one PAGE, as

		 * a one page request is never in violation.

		 * violating it, so limit ->max_segments to 1 lying within

		 * a single page, as a one page request is never in violation.

		 */

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn &&

		    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

			blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn) {

			blk_queue_max_segments(mddev->queue, 1);

			blk_queue_segment_boundary(mddev->queue,

						   PAGE_CACHE_SIZE - 1);

		}

	}



	mddev->degraded = 0;

drivers/md/raid10.c

+17 −11
Original line number Diff line number Diff line
@@ -1155,13 +1155,17 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) 


			disk_stack_limits(mddev->gendisk, rdev->bdev,

					  rdev->data_offset << 9);

			/* as we don't honour merge_bvec_fn, we must never risk

			 * violating it, so limit ->max_sector to one PAGE, as

			 * a one page request is never in violation.

			/* as we don't honour merge_bvec_fn, we must

			 * never risk violating it, so limit

			 * ->max_segments to one lying with a single

			 * page, as a one page request is never in

			 * violation.

			 */

			if (rdev->bdev->bd_disk->queue->merge_bvec_fn &&

			    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

				blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

			if (rdev->bdev->bd_disk->queue->merge_bvec_fn) {

				blk_queue_max_segments(mddev->queue, 1);

				blk_queue_segment_boundary(mddev->queue,

							   PAGE_CACHE_SIZE - 1);

			}



			p->head_position = 0;

			rdev->raid_disk = mirror;
@@ -2255,12 +2259,14 @@ static int run(mddev_t *mddev) 
		disk_stack_limits(mddev->gendisk, rdev->bdev,

				  rdev->data_offset << 9);

		/* as we don't honour merge_bvec_fn, we must never risk

		 * violating it, so limit ->max_sector to one PAGE, as

		 * a one page request is never in violation.

		 * violating it, so limit max_segments to 1 lying

		 * within a single page.

		 */

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn &&

		    queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9))

			blk_queue_max_hw_sectors(mddev->queue, PAGE_SIZE>>9);

		if (rdev->bdev->bd_disk->queue->merge_bvec_fn) {

			blk_queue_max_segments(mddev->queue, 1);

			blk_queue_segment_boundary(mddev->queue,

						   PAGE_CACHE_SIZE - 1);

		}



		disk->head_position = 0;

	}