diff options
| author | Christoph Hellwig <hch@lst.de> | 2023-12-26 08:58:43 +0000 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2024-01-03 08:09:40 -0800 |
| commit | f29886c249ec2ed566e423fd02f6071b8f0a3346 (patch) | |
| tree | d159951ccf3d86b57a778efd6c367dbdb7b17776 /drivers/nvme | |
| parent | a4be9679aa3e862adcab465122c7678c2b5d40e6 (diff) | |
| download | linux-f29886c249ec2ed566e423fd02f6071b8f0a3346.tar.gz | |
nvme: fix max_discard_sectors calculation
ctrl->max_discard_sectors stores a value that is potentially based of
the DMRSL field in Identify Controller, which is in units of LBAs and
thus dependent on the Format of a namespace.
Fix this by moving the calculation of max_discard_sectors entirely
into nvme_config_discard and replacing the ctrl->max_discard_sectors
value with a local variable so that the calculation is always
namespace-specific.
Fixes: 1a86924e4f46 ("nvme: fix interpretation of DMRSL")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/core.c | 20 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 |
2 files changed, 9 insertions, 12 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 6c52b0ab382c8..86b9a1c4876f5 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1727,12 +1727,13 @@ static void nvme_config_discard(struct nvme_ctrl *ctrl, struct gendisk *disk, struct nvme_ns_head *head) { struct request_queue *queue = disk->queue; + u32 max_discard_sectors; - if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(head, UINT_MAX)) - ctrl->max_discard_sectors = - nvme_lba_to_sect(head, ctrl->dmrsl); - - if (ctrl->max_discard_sectors == 0) { + if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(head, UINT_MAX)) { + max_discard_sectors = nvme_lba_to_sect(head, ctrl->dmrsl); + } else if (ctrl->oncs & NVME_CTRL_ONCS_DSM) { + max_discard_sectors = UINT_MAX; + } else { blk_queue_max_discard_sectors(queue, 0); return; } @@ -1750,7 +1751,7 @@ static void nvme_config_discard(struct nvme_ctrl *ctrl, struct gendisk *disk, if (queue->limits.max_discard_sectors) return; - blk_queue_max_discard_sectors(queue, ctrl->max_discard_sectors); + blk_queue_max_discard_sectors(queue, max_discard_sectors); blk_queue_max_discard_segments(queue, ctrl->max_discard_segments); queue->limits.discard_granularity = queue_logical_block_size(queue); @@ -2911,13 +2912,10 @@ static int nvme_init_non_mdts_limits(struct nvme_ctrl *ctrl) struct nvme_id_ctrl_nvm *id; int ret; - if (ctrl->oncs & NVME_CTRL_ONCS_DSM) { - ctrl->max_discard_sectors = UINT_MAX; + if (ctrl->oncs & NVME_CTRL_ONCS_DSM) ctrl->max_discard_segments = NVME_DSM_MAX_RANGES; - } else { - ctrl->max_discard_sectors = 0; + else ctrl->max_discard_segments = 0; - } /* * Even though NVMe spec explicitly states that MDTS is not applicable diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 3dbd187896d8d..9a698c49ea036 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -297,7 +297,6 @@ struct nvme_ctrl { u32 max_hw_sectors; u32 max_segments; u32 max_integrity_segments; - u32 max_discard_sectors; u32 max_discard_segments; u32 max_zeroes_sectors; #ifdef CONFIG_BLK_DEV_ZONED |