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nvme: fix interpretation of DMRSL

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DMRSLl is in the unit of logical blocks, while max_discard_sectors is
in the unit of "linux sector".

Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Tom Yan 2022-04-29 12:52:43 +08:00 committed by Christoph Hellwig
parent c23d47abee
commit 1a86924e4f
2 changed files with 5 additions and 2 deletions
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6
drivers/nvme/host/core.c
View File

@ -1634,6 +1634,9 @@ static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
if (queue->limits.max_discard_sectors)
return;
if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(ns, UINT_MAX))
ctrl->max_discard_sectors = nvme_lba_to_sect(ns, ctrl->dmrsl);
blk_queue_max_discard_sectors(queue, ctrl->max_discard_sectors);
blk_queue_max_discard_segments(queue, ctrl->max_discard_segments);
@ -2893,8 +2896,7 @@ static int nvme_init_non_mdts_limits(struct nvme_ctrl *ctrl)
if (id->dmrl)
ctrl->max_discard_segments = id->dmrl;
if (id->dmrsl)
ctrl->max_discard_sectors = le32_to_cpu(id->dmrsl);
ctrl->dmrsl = le32_to_cpu(id->dmrsl);
if (id->wzsl)
ctrl->max_zeroes_sectors = nvme_mps_to_sectors(ctrl, id->wzsl);

1
drivers/nvme/host/nvme.h
View File

@ -284,6 +284,7 @@ struct nvme_ctrl {
#endif
u16 crdt[3];
u16 oncs;
u32 dmrsl;
u16 oacs;
u16 sqsize;
u32 max_namespaces;