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;
}
static int nilfs_direct_assign(struct nilfs_bmap *bmap,
struct buffer_head **bh,
sector_t blocknr,
union nilfs_binfo *binfo)
{
__u64 key;
__u64 ptr;
key = nilfs_bmap_data_get_key(bmap, *bh);
if (unlikely(key > NILFS_DIRECT_KEY_MAX)) {
printk(KERN_CRIT "%s: invalid key: %llu\n", __func__,
(unsigned long long)key);
return -EINVAL;
}
ptr = nilfs_direct_get_ptr(bmap, key);
if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) {
printk(KERN_CRIT "%s: invalid pointer: %llu\n", __func__,
(unsigned long long)ptr);
return -EINVAL;
}
return NILFS_BMAP_USE_VBN(bmap) ?
nilfs_direct_assign_v(bmap, key, ptr, bh, blocknr, binfo) :
nilfs_direct_assign_p(bmap, key, ptr, bh, blocknr, binfo);
}
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;
}
