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yaml
---
r: 286260
b: refs/heads/master
c: d567760
h: refs/heads/master
v: v3
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Matthew Wilcox committed Nov 4, 2011
1 parent f878ddb commit 37a15fe
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Showing 2 changed files with 12 additions and 14 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 99802a7aee2b3dd720e382c52b892cc6a8122b11
refs/heads/master: d567760c409f981d35fc755b51d5bf56a99a467b
24 changes: 11 additions & 13 deletions trunk/drivers/block/nvme.c
Original file line number Diff line number Diff line change
Expand Up @@ -256,10 +256,9 @@ struct nvme_prps {
__le64 *list[0];
};

static void nvme_free_prps(struct nvme_queue *nvmeq, struct nvme_prps *prps)
static void nvme_free_prps(struct nvme_dev *dev, struct nvme_prps *prps)
{
const int last_prp = PAGE_SIZE / 8 - 1;
struct nvme_dev *dev = nvmeq->dev;
int i;
dma_addr_t prp_dma;

Expand Down Expand Up @@ -295,7 +294,7 @@ static struct nvme_bio *alloc_nbio(unsigned nseg, gfp_t gfp)

static void free_nbio(struct nvme_queue *nvmeq, struct nvme_bio *nbio)
{
nvme_free_prps(nvmeq, nbio->prps);
nvme_free_prps(nvmeq->dev, nbio->prps);
kfree(nbio);
}

Expand All @@ -316,11 +315,10 @@ static void bio_completion(struct nvme_queue *nvmeq, void *ctx,
}

/* length is in bytes */
static struct nvme_prps *nvme_setup_prps(struct nvme_queue *nvmeq,
static struct nvme_prps *nvme_setup_prps(struct nvme_dev *dev,
struct nvme_common_command *cmd,
struct scatterlist *sg, int length)
{
struct nvme_dev *dev = nvmeq->dev;
struct dma_pool *pool;
int dma_len = sg_dma_len(sg);
u64 dma_addr = sg_dma_address(sg);
Expand Down Expand Up @@ -458,7 +456,7 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
cmnd->rw.flags = 1;
cmnd->rw.command_id = cmdid;
cmnd->rw.nsid = cpu_to_le32(ns->ns_id);
nbio->prps = nvme_setup_prps(nvmeq, &cmnd->common, nbio->sg,
nbio->prps = nvme_setup_prps(nvmeq->dev, &cmnd->common, nbio->sg,
bio->bi_size);
cmnd->rw.slba = cpu_to_le64(bio->bi_sector >> (ns->lba_shift - 9));
cmnd->rw.length = cpu_to_le16((bio->bi_size >> ns->lba_shift) - 1);
Expand Down Expand Up @@ -939,10 +937,10 @@ static int nvme_submit_user_admin_command(struct nvme_dev *dev,
nents = nvme_map_user_pages(dev, 0, addr, length, &sg);
if (nents < 0)
return nents;
prps = nvme_setup_prps(dev->queues[0], &cmd->common, sg, length);
prps = nvme_setup_prps(dev, &cmd->common, sg, length);
err = nvme_submit_admin_cmd(dev, cmd, NULL);
nvme_unmap_user_pages(dev, 0, addr, length, sg, nents);
nvme_free_prps(dev->queues[0], prps);
nvme_free_prps(dev, prps);
return err ? -EIO : 0;
}

Expand Down Expand Up @@ -1000,10 +998,10 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
c.rw.reftag = cpu_to_le32(io.reftag); /* XXX: endian? */
c.rw.apptag = cpu_to_le16(io.apptag);
c.rw.appmask = cpu_to_le16(io.appmask);
nvmeq = get_nvmeq(ns);
/* XXX: metadata */
prps = nvme_setup_prps(nvmeq, &c.common, sg, length);
prps = nvme_setup_prps(dev, &c.common, sg, length);

nvmeq = get_nvmeq(ns);
/* Since nvme_submit_sync_cmd sleeps, we can't keep preemption
* disabled. We may be preempted at any point, and be rescheduled
* to a different CPU. That will cause cacheline bouncing, but no
Expand All @@ -1013,7 +1011,7 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
status = nvme_submit_sync_cmd(nvmeq, &c, &result, IO_TIMEOUT);

nvme_unmap_user_pages(dev, io.opcode & 1, io.addr, length, sg, nents);
nvme_free_prps(nvmeq, prps);
nvme_free_prps(dev, prps);
put_user(result, &uio->result);
return status;
}
Expand Down Expand Up @@ -1041,11 +1039,11 @@ static int nvme_download_firmware(struct nvme_ns *ns,
c.dlfw.opcode = nvme_admin_download_fw;
c.dlfw.numd = cpu_to_le32(dlfw.length);
c.dlfw.offset = cpu_to_le32(dlfw.offset);
prps = nvme_setup_prps(dev->queues[0], &c.common, sg, dlfw.length * 4);
prps = nvme_setup_prps(dev, &c.common, sg, dlfw.length * 4);

status = nvme_submit_admin_cmd(dev, &c, NULL);
nvme_unmap_user_pages(dev, 0, dlfw.addr, dlfw.length * 4, sg, nents);
nvme_free_prps(dev->queues[0], prps);
nvme_free_prps(dev, prps);
return status;
}

Expand Down

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