Commit d534df3c authored by Matthew Wilcox's avatar Matthew Wilcox
Browse files

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: default avatarMatthew Wilcox <matthew.r.wilcox@intel.com>
parent e025344c

drivers/block/nvme.c

+24 −24
Original line number Diff line number Diff line
@@ -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;

}

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