Commit c61b82c7 authored Aug 18, 2020 by Christoph Hellwig Committed by Jens Axboe Aug 21, 2020

nvme-pci: fix PRP pool size



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>

parent 7442ddce

drivers/nvme/host/pci.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;

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