diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-12-25 11:32:31 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-12-26 12:10:51 -0700 |
| commit | 33b93727ce90c8db916fb071ed13e90106339754 (patch) | |
| tree | ff95728d96647c217de8a0bc4f3e04fcc9eae808 | |
| parent | 246cf66e300b76099b5dbd3fdd39e9a5dbc53f02 (diff) | |
nvme: fix setting the queue depth in nvme_alloc_io_tag_set
While the CAP.MQES field in NVMe is a 0s based filed with a natural one
off, we also need to account for the queue wrap condition and fix undo
the one off again in nvme_alloc_io_tag_set. This was never properly
done by the fabrics drivers, but they don't seem to care because there
is no actual physical queue that can wrap around, but it became a
problem when converting over the PCIe driver. Also add back the
BLK_MQ_MAX_DEPTH check that was lost in the same commit.
Fixes: 0da7feaa5913 ("nvme-pci: use the tagset alloc/free helpers")
Reported-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Hugh Dickins <hughd@google.com>
Link: https://lore.kernel.org/r/20221225103234.226794-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/nvme/host/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index e26b085a007a..cda1361e6d4f 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -4897,7 +4897,7 @@ int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set, memset(set, 0, sizeof(*set)); set->ops = ops; - set->queue_depth = ctrl->sqsize + 1; + set->queue_depth = min_t(unsigned, ctrl->sqsize, BLK_MQ_MAX_DEPTH - 1); /* * Some Apple controllers requires tags to be unique across admin and * the (only) I/O queue, so reserve the first 32 tags of the I/O queue. |