예제 #1
0
static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
				  struct buffer_head *bh)
{
	struct nilfs_palloc_req oldreq, newreq;
	struct inode *dat;
	__u64 key;
	__u64 ptr;
	int ret;

	if (!NILFS_BMAP_USE_VBN(bmap))
		return 0;

	dat = nilfs_bmap_get_dat(bmap);
	key = nilfs_bmap_data_get_key(bmap, bh);
	ptr = nilfs_direct_get_ptr(bmap, key);
	if (!buffer_nilfs_volatile(bh)) {
		oldreq.pr_entry_nr = ptr;
		newreq.pr_entry_nr = ptr;
		ret = nilfs_dat_prepare_update(dat, &oldreq, &newreq);
		if (ret < 0)
			return ret;
		nilfs_dat_commit_update(dat, &oldreq, &newreq,
					bmap->b_ptr_type == NILFS_BMAP_PTR_VS);
		set_buffer_nilfs_volatile(bh);
		nilfs_direct_set_ptr(bmap, key, newreq.pr_entry_nr);
	} else
		ret = nilfs_dat_mark_dirty(dat, ptr);

	return ret;
}
예제 #2
0
static int nilfs_direct_propagate_v(struct nilfs_direct *direct,
				    struct buffer_head *bh)
{
	union nilfs_bmap_ptr_req oldreq, newreq;
	__u64 key;
	__u64 ptr;
	int ret;

	key = nilfs_bmap_data_get_key(&direct->d_bmap, bh);
	ptr = nilfs_direct_get_ptr(direct, key);
	if (!buffer_nilfs_volatile(bh)) {
		oldreq.bpr_ptr = ptr;
		newreq.bpr_ptr = ptr;
		ret = nilfs_bmap_prepare_update_v(&direct->d_bmap, &oldreq,
						  &newreq);
		if (ret < 0)
			return ret;
		nilfs_bmap_commit_update_v(&direct->d_bmap, &oldreq, &newreq);
		set_buffer_nilfs_volatile(bh);
		nilfs_direct_set_ptr(direct, key, newreq.bpr_ptr);
	} else
		ret = nilfs_bmap_mark_dirty(&direct->d_bmap, ptr);

	return ret;
}