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nvme: always unregister the integrity profile in __nvme_revalidate_disk

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This is safe because the queue is always frozen when we revalidate, and
it simplifies both the existing code as well as the multipath
implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2017-11-02 21:28:52 +03:00 committed by Jens Axboe
parent e54b064cb2
commit b5be3b3929
1 changed files with 10 additions and 30 deletions
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40
drivers/nvme/host/core.c
View file

@ -1081,29 +1081,6 @@ static int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo)
}
#ifdef CONFIG_BLK_DEV_INTEGRITY
static void nvme_prep_integrity(struct gendisk *disk, struct nvme_id_ns *id,
u16 bs)
{
struct nvme_ns *ns = disk->private_data;
u16 old_ms = ns->ms;
u8 pi_type = 0;
ns->ms = le16_to_cpu(id->lbaf[id->flbas & NVME_NS_FLBAS_LBA_MASK].ms);
ns->ext = ns->ms && (id->flbas & NVME_NS_FLBAS_META_EXT);
/* PI implementation requires metadata equal t10 pi tuple size */
if (ns->ms == sizeof(struct t10_pi_tuple))
pi_type = id->dps & NVME_NS_DPS_PI_MASK;
if (blk_get_integrity(disk) &&
(ns->pi_type != pi_type || ns->ms != old_ms ||
bs != queue_logical_block_size(disk->queue) ||
(ns->ms && ns->ext)))
blk_integrity_unregister(disk);
ns->pi_type = pi_type;
}
static void nvme_init_integrity(struct nvme_ns *ns)
{
struct blk_integrity integrity;
@ -1130,10 +1107,6 @@ static void nvme_init_integrity(struct nvme_ns *ns)
blk_queue_max_integrity_segments(ns->queue, 1);
}
#else
static void nvme_prep_integrity(struct gendisk *disk, struct nvme_id_ns *id,
u16 bs)
{
}
static void nvme_init_integrity(struct nvme_ns *ns)
{
}
@ -1202,15 +1175,22 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
ns->lba_shift = 9;
bs = 1 << ns->lba_shift;
ns->noiob = le16_to_cpu(id->noiob);
ns->ext = ns->ms && (id->flbas & NVME_NS_FLBAS_META_EXT);
ns->ms = le16_to_cpu(id->lbaf[id->flbas & NVME_NS_FLBAS_LBA_MASK].ms);
/* the PI implementation requires metadata equal t10 pi tuple size */
if (ns->ms == sizeof(struct t10_pi_tuple))
ns->pi_type = id->dps & NVME_NS_DPS_PI_MASK;
else
ns->pi_type = 0;
blk_mq_freeze_queue(disk->queue);
blk_integrity_unregister(disk);
if (ctrl->ops->flags & NVME_F_METADATA_SUPPORTED)
nvme_prep_integrity(disk, id, bs);
blk_queue_logical_block_size(ns->queue, bs);
if (ns->noiob)
nvme_set_chunk_size(ns);
if (ns->ms && !blk_get_integrity(disk) && !ns->ext)
if (ns->ms && !ns->ext &&
(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))
nvme_init_integrity(ns);
if (ns->ms && !(ns->ms == 8 && ns->pi_type) && !blk_get_integrity(disk))
set_capacity(disk, 0);