static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
{
struct nilfs_direct *direct;
union nilfs_bmap_ptr_req req;
struct nilfs_bmap_stats stats;
int ret;
direct = (struct nilfs_direct *)bmap;
if (key > NILFS_DIRECT_KEY_MAX)
return -ENOENT;
if (nilfs_direct_get_ptr(direct, key) != NILFS_BMAP_INVALID_PTR)
return -EEXIST;
ret = nilfs_direct_prepare_insert(direct, key, &req, &stats);
if (ret < 0)
return ret;
nilfs_direct_commit_insert(direct, &req, key, ptr);
nilfs_bmap_add_blocks(bmap, stats.bs_nblocks);
return 0;
}
static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
{
struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
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(direct, key) != NILFS_BMAP_INVALID_PTR)
return -EEXIST;
if (NILFS_BMAP_USE_VBN(bmap)) {
req.bpr_ptr = nilfs_direct_find_target_v(direct, 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(direct, key, req.bpr_ptr);
if (!nilfs_bmap_dirty(bmap))
nilfs_bmap_set_dirty(bmap);
if (NILFS_BMAP_USE_VBN(bmap))
nilfs_direct_set_target_v(direct, key, req.bpr_ptr);
nilfs_bmap_add_blocks(bmap, 1);
}
return ret;
}