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>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 1cb09a187ae7a4c89e4028f029acd36851c36017..e001a4ae65b0615792ec623178284226aef1eb3e 100644 (file)
--- 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;