From: Christoph Hellwig <hch@lst.de>
To: kbusch@kernel.org, sagi@grimberg.me
Cc: linux-nvme@lists.infradead.org
Subject: [PATCH] nvme-pci: fix PRP pool size
Date: Tue, 18 Aug 2020 19:51:59 +0200 [thread overview]
Message-ID: <20200818175159.1727735-1-hch@lst.de> (raw)
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>
---
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 ba725ae47305ef..a33adab62acbaf 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;
--
2.28.0
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next reply other threads:[~2020-08-18 17:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-18 17:51 Christoph Hellwig [this message]
2020-08-18 18:58 ` [PATCH] nvme-pci: fix PRP pool size Keith Busch
2020-08-18 19:09 ` Sagi Grimberg
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