This is a note to let you know that I've just added the patch titled
nvme-pci: factor the iod mempool creation into a helper
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nvme-pci-factor-the-iod-mempool-creation-into-a-help.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 285848a82984b70d9400557e4f69d066cfd712f2
Author: Christoph Hellwig <hch@xxxxxx>
Date: Tue Nov 8 09:41:41 2022 +0100
nvme-pci: factor the iod mempool creation into a helper
[ Upstream commit 081a7d958ce4b65f9aab6e70e65b0b2e0b92297c ]
Add a helper to create the iod mempool.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Tested-by Gerd Bayer <gbayer@xxxxxxxxxxxxx>
Stable-dep-of: dad651b2a44e ("nvme-pci: do not set the NUMA node of device if it has none")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index e384ade6c2cd2..48886355ce90c 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -387,14 +387,6 @@ static int nvme_pci_npages_sgl(void)
NVME_CTRL_PAGE_SIZE);
}
-static size_t nvme_pci_iod_alloc_size(void)
-{
- size_t npages = max(nvme_pci_npages_prp(), nvme_pci_npages_sgl());
-
- return sizeof(__le64 *) * npages +
- sizeof(struct scatterlist) * NVME_MAX_SEGS;
-}
-
static int nvme_admin_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
unsigned int hctx_idx)
{
@@ -2557,6 +2549,22 @@ static void nvme_release_prp_pools(struct nvme_dev *dev)
dma_pool_destroy(dev->prp_small_pool);
}
+static int nvme_pci_alloc_iod_mempool(struct nvme_dev *dev)
+{
+ size_t npages = max(nvme_pci_npages_prp(), nvme_pci_npages_sgl());
+ size_t alloc_size = sizeof(__le64 *) * npages +
+ sizeof(struct scatterlist) * NVME_MAX_SEGS;
+
+ WARN_ON_ONCE(alloc_size > PAGE_SIZE);
+ dev->iod_mempool = mempool_create_node(1,
+ mempool_kmalloc, mempool_kfree,
+ (void *)alloc_size, GFP_KERNEL,
+ dev_to_node(dev->dev));
+ if (!dev->iod_mempool)
+ return -ENOMEM;
+ return 0;
+}
+
static void nvme_free_tagset(struct nvme_dev *dev)
{
if (dev->tagset.tags)
@@ -2854,7 +2862,6 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
int node, result = -ENOMEM;
struct nvme_dev *dev;
unsigned long quirks = id->driver_data;
- size_t alloc_size;
node = dev_to_node(&pdev->dev);
if (node == NUMA_NO_NODE)
@@ -2899,21 +2906,9 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
quirks |= NVME_QUIRK_SIMPLE_SUSPEND;
}
- /*
- * Double check that our mempool alloc size will cover the biggest
- * command we support.
- */
- alloc_size = nvme_pci_iod_alloc_size();
- WARN_ON_ONCE(alloc_size > PAGE_SIZE);
-
- dev->iod_mempool = mempool_create_node(1, mempool_kmalloc,
- mempool_kfree,
- (void *) alloc_size,
- GFP_KERNEL, node);
- if (!dev->iod_mempool) {
- result = -ENOMEM;
+ result = nvme_pci_alloc_iod_mempool(dev);
+ if (result)
goto release_pools;
- }
result = nvme_init_ctrl(&dev->ctrl, &pdev->dev, &nvme_pci_ctrl_ops,
quirks);
