mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

nvme-pci: factor the iod mempool creation into a helper 

Add a helper to create the iod mempool.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by Gerd Bayer <gbayer@linxu.ibm.com>
This commit is contained in:
Christoph Hellwig 2022-11-08 09:41:41 +01:00
parent c11b7716d6
commit 081a7d958c
1 changed files with 18 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
drivers/nvme/host/pci.c
View File

@ -390,14 +390,6 @@ static int nvme_pci_npages_sgl(void)
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)
{
@ -2762,6 +2754,22 @@ 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)
@ -3087,7 +3095,6 @@ 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)
@ -3132,21 +3139,9 @@ 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);