Esempi in C++ (Cpp) per nilfs_direct_find_target_v

Esempio n. 1

static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
{
	union nilfs_bmap_ptr_req req;
	struct inode *dat = NULL;
	struct buffer_head *bh;
	int ret;

	if (key > NILFS_DIRECT_KEY_MAX)
		return -ENOENT;
	if (nilfs_direct_get_ptr(bmap, key) != NILFS_BMAP_INVALID_PTR)
		return -EEXIST;

	if (NILFS_BMAP_USE_VBN(bmap)) {
		req.bpr_ptr = nilfs_direct_find_target_v(bmap, key);
		dat = nilfs_bmap_get_dat(bmap);
	}
	ret = nilfs_bmap_prepare_alloc_ptr(bmap, &req, dat);
	if (!ret) {
		/* ptr must be a pointer to a buffer head. */
		bh = (struct buffer_head *)((unsigned long)ptr);
		set_buffer_nilfs_volatile(bh);

		nilfs_bmap_commit_alloc_ptr(bmap, &req, dat);
		nilfs_direct_set_ptr(bmap, key, req.bpr_ptr);

		if (!nilfs_bmap_dirty(bmap))
			nilfs_bmap_set_dirty(bmap);

		if (NILFS_BMAP_USE_VBN(bmap))
			nilfs_bmap_set_target_v(bmap, key, req.bpr_ptr);

		nilfs_inode_add_blocks(bmap->b_inode, 1);
	}
	return ret;
}

Esempio n. 2

File: direct.c Progetto: AppEngine/linux-2.6

static int nilfs_direct_prepare_insert(struct nilfs_direct *direct,
				       __u64 key,
				       union nilfs_bmap_ptr_req *req,
				       struct nilfs_bmap_stats *stats)
{
	int ret;

	if (NILFS_BMAP_USE_VBN(&direct->d_bmap))
		req->bpr_ptr = nilfs_direct_find_target_v(direct, key);
	ret = nilfs_bmap_prepare_alloc_ptr(&direct->d_bmap, req);
	if (ret < 0)
		return ret;

	stats->bs_nblocks = 1;
	return 0;
}