diff options
| author | Keith Busch <keith.busch@intel.com> | 2015-08-19 14:24:05 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-08-19 14:26:02 -0700 |
| commit | 03100aada96f0645bbcb89aea24c01f02d0ef1fa (patch) | |
| tree | ba909d035a188206b101ae633f925e18d749f7cc /drivers | |
| parent | d2be537c3ba3568acd79cd178327b842e60d035e (diff) | |
| download | talos-op-linux-03100aada96f0645bbcb89aea24c01f02d0ef1fa.tar.gz talos-op-linux-03100aada96f0645bbcb89aea24c01f02d0ef1fa.zip | |
block: Replace SG_GAPS with new queue limits mask
The SG_GAPS queue flag caused checks for bio vector alignment against
PAGE_SIZE, but the device may have different constraints. This patch
adds a queue limits so a driver with such constraints can set to allow
requests that would have been unnecessarily split. The new gaps check
takes the request_queue as a parameter to simplify the logic around
invoking this function.
This new limit makes the queue flag redundant, so removing it and
all usage. Device-mappers will inherit the correct settings through
blk_stack_limits().
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/nvme-core.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-table.c | 13 |
2 files changed, 1 insertions, 14 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index d844ec4a2b85..2f694d78da55 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -2067,7 +2067,6 @@ static void nvme_alloc_ns(struct nvme_dev *dev, unsigned nsid) goto out_free_ns; queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, ns->queue); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, ns->queue); - queue_flag_set_unlocked(QUEUE_FLAG_SG_GAPS, ns->queue); ns->dev = dev; ns->queue->queuedata = ns; @@ -2087,6 +2086,7 @@ static void nvme_alloc_ns(struct nvme_dev *dev, unsigned nsid) blk_queue_chunk_sectors(ns->queue, dev->stripe_size >> 9); if (dev->vwc & NVME_CTRL_VWC_PRESENT) blk_queue_flush(ns->queue, REQ_FLUSH | REQ_FUA); + blk_queue_virt_boundary(ns->queue, dev->page_size - 1); disk->major = nvme_major; disk->first_minor = 0; diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index afb4ad3dfeb3..e76ed003769e 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1380,14 +1380,6 @@ static int queue_supports_sg_merge(struct dm_target *ti, struct dm_dev *dev, return q && !test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags); } -static int queue_supports_sg_gaps(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) -{ - struct request_queue *q = bdev_get_queue(dev->bdev); - - return q && !test_bit(QUEUE_FLAG_SG_GAPS, &q->queue_flags); -} - static bool dm_table_all_devices_attribute(struct dm_table *t, iterate_devices_callout_fn func) { @@ -1508,11 +1500,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, else queue_flag_set_unlocked(QUEUE_FLAG_NO_SG_MERGE, q); - if (dm_table_all_devices_attribute(t, queue_supports_sg_gaps)) - queue_flag_clear_unlocked(QUEUE_FLAG_SG_GAPS, q); - else - queue_flag_set_unlocked(QUEUE_FLAG_SG_GAPS, q); - dm_table_set_integrity(t); /* |
