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nvme: set queue limits for the admin queue 

Factor out a helper to set all the device specific queue limits and apply
them to the admin queue in addition to the I/O queues.  Without this the
command size on the admin queue is arbitrarily low, and the missing
other limitations are just minefields waiting for victims.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jeff Lien <Jeff.Lien@hgst.com>
Tested-by: Jeff Lien <Jeff.Lien@hgst.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
hifive-unleashed-5.1
Christoph Hellwig 2016-03-02 18:07:11 +01:00 committed by Jens Axboe
parent a1a0e23e49
commit da35825d9a
1 changed files with 19 additions and 10 deletions
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29
drivers/nvme/host/core.c
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@ -840,6 +840,21 @@ int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl)
return ret;
}
static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
struct request_queue *q)
{
if (ctrl->max_hw_sectors) {
blk_queue_max_hw_sectors(q, ctrl->max_hw_sectors);
blk_queue_max_segments(q,
(ctrl->max_hw_sectors / (ctrl->page_size >> 9)) + 1);
}
if (ctrl->stripe_size)
blk_queue_chunk_sectors(q, ctrl->stripe_size >> 9);
if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
blk_queue_virt_boundary(q, ctrl->page_size - 1);
}
/*
* Initialize the cached copies of the Identify data and various controller
* register in our nvme_ctrl structure. This should be called as soon as
@ -897,6 +912,8 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
}
}
nvme_set_queue_limits(ctrl, ctrl->admin_q);
kfree(id);
return 0;
}
@ -1147,17 +1164,9 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns->disk = disk;
ns->lba_shift = 9; /* set to a default value for 512 until disk is validated */
blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
if (ctrl->max_hw_sectors) {
blk_queue_max_hw_sectors(ns->queue, ctrl->max_hw_sectors);
blk_queue_max_segments(ns->queue,
(ctrl->max_hw_sectors / (ctrl->page_size >> 9)) + 1);
}
if (ctrl->stripe_size)
blk_queue_chunk_sectors(ns->queue, ctrl->stripe_size >> 9);
if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
blk_queue_flush(ns->queue, REQ_FLUSH | REQ_FUA);
blk_queue_virt_boundary(ns->queue, ctrl->page_size - 1);
nvme_set_queue_limits(ctrl, ns->queue);
disk->major = nvme_major;
disk->first_minor = 0;