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nvme-pci: fix PRP pool size

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All operations are based on the controller, not the host page size.
Switch the dma pool to use the controller page size as well to avoid
massive overallocations on large page size systems.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-08-18 19:51:59 +02:00 committed by Jens Axboe
parent 7442ddcedc
commit c61b82c7b7
1 changed files with 2 additions and 1 deletions
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3
drivers/nvme/host/pci.c
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@ -2460,7 +2460,8 @@ static int nvme_disable_prepare_reset(struct nvme_dev *dev, bool shutdown)
static int nvme_setup_prp_pools(struct nvme_dev *dev)
{
dev->prp_page_pool = dma_pool_create("prp list page", dev->dev,
PAGE_SIZE, PAGE_SIZE, 0);
NVME_CTRL_PAGE_SIZE,
NVME_CTRL_PAGE_SIZE, 0);
if (!dev->prp_page_pool)
return -ENOMEM;