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NVMe: Rename nvme_req_info to nvme_bio 

There are too many things called 'info' in this driver.  This data
structure is auxiliary information for a struct bio, so call it nvme_bio,
or nbio when used as a variable.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This commit is contained in:
Matthew Wilcox 2011-02-10 09:03:06 -05:00
parent e025344c56
commit d534df3c73
1 changed files with 24 additions and 24 deletions
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48
drivers/block/nvme.c
View File

@ -279,7 +279,7 @@ static void nvme_free_prps(struct nvme_queue *nvmeq, struct nvme_prps *prps)
kfree(prps);
}
struct nvme_req_info {
struct nvme_bio {
struct bio *bio;
int nents;
struct nvme_prps *prps;
@ -287,28 +287,28 @@ struct nvme_req_info {
};
/* XXX: use a mempool */
static struct nvme_req_info *alloc_info(unsigned nseg, gfp_t gfp)
static struct nvme_bio *alloc_nbio(unsigned nseg, gfp_t gfp)
{
return kzalloc(sizeof(struct nvme_req_info) +
return kzalloc(sizeof(struct nvme_bio) +
sizeof(struct scatterlist) * nseg, gfp);
}
static void free_info(struct nvme_queue *nvmeq, struct nvme_req_info *info)
static void free_nbio(struct nvme_queue *nvmeq, struct nvme_bio *nbio)
{
nvme_free_prps(nvmeq, info->prps);
kfree(info);
nvme_free_prps(nvmeq, nbio->prps);
kfree(nbio);
}
static void bio_completion(struct nvme_queue *nvmeq, void *ctx,
struct nvme_completion *cqe)
{
struct nvme_req_info *info = ctx;
struct bio *bio = info->bio;
struct nvme_bio *nbio = ctx;
struct bio *bio = nbio->bio;
u16 status = le16_to_cpup(&cqe->status) >> 1;
dma_unmap_sg(nvmeq->q_dmadev, info->sg, info->nents,
dma_unmap_sg(nvmeq->q_dmadev, nbio->sg, nbio->nents,
bio_data_dir(bio) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
free_info(nvmeq, info);
free_nbio(nvmeq, nbio);
bio_endio(bio, status ? -EIO : 0);
bio = bio_list_pop(&nvmeq->sq_cong);
if (bio)
@ -382,11 +382,11 @@ static struct nvme_prps *nvme_setup_prps(struct nvme_queue *nvmeq,
return prps;
}
static int nvme_map_bio(struct device *dev, struct nvme_req_info *info,
static int nvme_map_bio(struct device *dev, struct nvme_bio *nbio,
struct bio *bio, enum dma_data_direction dma_dir, int psegs)
{
struct bio_vec *bvec;
struct scatterlist *sg = info->sg;
struct scatterlist *sg = nbio->sg;
int i, nsegs;
sg_init_table(sg, psegs);
@ -396,16 +396,16 @@ static int nvme_map_bio(struct device *dev, struct nvme_req_info *info,
/* XXX: handle non-mergable here */
nsegs++;
}
info->nents = nsegs;
nbio->nents = nsegs;
return dma_map_sg(dev, info->sg, info->nents, dma_dir);
return dma_map_sg(dev, nbio->sg, nbio->nents, dma_dir);
}
static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
struct bio *bio)
{
struct nvme_command *cmnd;
struct nvme_req_info *info;
struct nvme_bio *nbio;
enum dma_data_direction dma_dir;
int cmdid;
u16 control;
@ -413,14 +413,14 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
unsigned long flags;
int psegs = bio_phys_segments(ns->queue, bio);
info = alloc_info(psegs, GFP_NOIO);
if (!info)
nbio = alloc_nbio(psegs, GFP_NOIO);
if (!nbio)
goto congestion;
info->bio = bio;
nbio->bio = bio;
cmdid = alloc_cmdid(nvmeq, info, bio_completion_id, IO_TIMEOUT);
cmdid = alloc_cmdid(nvmeq, nbio, bio_completion_id, IO_TIMEOUT);
if (unlikely(cmdid < 0))
goto free_info;
goto free_nbio;
control = 0;
if (bio->bi_rw & REQ_FUA)
@ -444,12 +444,12 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
dma_dir = DMA_FROM_DEVICE;
}
nvme_map_bio(nvmeq->q_dmadev, info, bio, dma_dir, psegs);
nvme_map_bio(nvmeq->q_dmadev, nbio, bio, dma_dir, psegs);
cmnd->rw.flags = 1;
cmnd->rw.command_id = cmdid;
cmnd->rw.nsid = cpu_to_le32(ns->ns_id);
info->prps = nvme_setup_prps(nvmeq, &cmnd->common, info->sg,
nbio->prps = nvme_setup_prps(nvmeq, &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);
@ -464,8 +464,8 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
return 0;
free_info:
free_info(nvmeq, info);
free_nbio:
free_nbio(nvmeq, nbio);
congestion:
return -EBUSY;
}