From c61b82c7b71343c6aca6bb6cc3ff44fb123fb5d3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 18 Aug 2020 19:51:59 +0200 Subject: [PATCH] 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 Reviewed-by: Keith Busch Signed-off-by: Sagi Grimberg Signed-off-by: Jens Axboe --- drivers/nvme/host/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 1cb09a187ae7..e001a4ae65b0 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -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;