C++ (Cpp) rrpc_unlock_rq Examples

Example #1

File: rrpc.c Project: cherubzhao/linux

static int rrpc_read_rq(struct rrpc *rrpc, struct bio *bio, struct nvm_rq *rqd,
							unsigned long flags)
{
	struct rrpc_rq *rrqd = nvm_rq_to_pdu(rqd);
	int is_gc = flags & NVM_IOTYPE_GC;
	sector_t laddr = rrpc_get_laddr(bio);
	struct rrpc_addr *gp;

	if (!is_gc && rrpc_lock_rq(rrpc, bio, rqd))
		return NVM_IO_REQUEUE;

	BUG_ON(!(laddr >= 0 && laddr < rrpc->nr_sects));
	gp = &rrpc->trans_map[laddr];

	if (gp->rblk) {
		rqd->ppa_addr = rrpc_ppa_to_gaddr(rrpc->dev, gp->addr);
	} else {
		BUG_ON(is_gc);
		rrpc_unlock_rq(rrpc, rqd);
		return NVM_IO_DONE;
	}

	rqd->opcode = NVM_OP_HBREAD;
	rrqd->addr = gp;

	return NVM_IO_OK;
}

Example #2

File: rrpc.c Project: cherubzhao/linux

static int rrpc_write_rq(struct rrpc *rrpc, struct bio *bio,
				struct nvm_rq *rqd, unsigned long flags)
{
	struct rrpc_rq *rrqd = nvm_rq_to_pdu(rqd);
	struct rrpc_addr *p;
	int is_gc = flags & NVM_IOTYPE_GC;
	sector_t laddr = rrpc_get_laddr(bio);

	if (!is_gc && rrpc_lock_rq(rrpc, bio, rqd))
		return NVM_IO_REQUEUE;

	p = rrpc_map_page(rrpc, laddr, is_gc);
	if (!p) {
		BUG_ON(is_gc);
		rrpc_unlock_rq(rrpc, rqd);
		rrpc_gc_kick(rrpc);
		return NVM_IO_REQUEUE;
	}

	rqd->ppa_addr = rrpc_ppa_to_gaddr(rrpc->dev, p->addr);
	rqd->opcode = NVM_OP_HBWRITE;
	rrqd->addr = p;

	return NVM_IO_OK;
}

Example #3

File: rrpc.c Project: JoonsooKim/linux

static int rrpc_end_io(struct nvm_rq *rqd, int error)
{
	struct rrpc *rrpc = container_of(rqd->ins, struct rrpc, instance);
	struct rrpc_rq *rrqd = nvm_rq_to_pdu(rqd);
	uint8_t npages = rqd->nr_pages;
	sector_t laddr = rrpc_get_laddr(rqd->bio) - npages;

	if (bio_data_dir(rqd->bio) == WRITE)
		rrpc_end_io_write(rrpc, rrqd, laddr, npages);

	if (rrqd->flags & NVM_IOTYPE_GC)
		return 0;

	rrpc_unlock_rq(rrpc, rqd);
	bio_put(rqd->bio);

	if (npages > 1)
		nvm_dev_dma_free(rrpc->dev, rqd->ppa_list, rqd->dma_ppa_list);
	if (rqd->metadata)
		nvm_dev_dma_free(rrpc->dev, rqd->metadata, rqd->dma_metadata);

	mempool_free(rqd, rrpc->rq_pool);

	return 0;
}

Example #4

File: rrpc.c Project: cherubzhao/linux

static int rrpc_submit_io(struct rrpc *rrpc, struct bio *bio,
				struct nvm_rq *rqd, unsigned long flags)
{
	int err;
	struct rrpc_rq *rrq = nvm_rq_to_pdu(rqd);
	uint8_t nr_pages = rrpc_get_pages(bio);
	int bio_size = bio_sectors(bio) << 9;

	if (bio_size < rrpc->dev->sec_size)
		return NVM_IO_ERR;
	else if (bio_size > rrpc->dev->max_rq_size)
		return NVM_IO_ERR;

	err = rrpc_setup_rq(rrpc, bio, rqd, flags, nr_pages);
	if (err)
		return err;

	bio_get(bio);
	rqd->bio = bio;
	rqd->ins = &rrpc->instance;
	rqd->nr_pages = nr_pages;
	rrq->flags = flags;

	err = nvm_submit_io(rrpc->dev, rqd);
	if (err) {
		pr_err("rrpc: I/O submission failed: %d\n", err);
		bio_put(bio);
		if (!(flags & NVM_IOTYPE_GC)) {
			rrpc_unlock_rq(rrpc, rqd);
			if (rqd->nr_pages > 1)
				nvm_dev_dma_free(rrpc->dev,
			rqd->ppa_list, rqd->dma_ppa_list);
		}
		return NVM_IO_ERR;
	}

	return NVM_IO_OK;
}