static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key) { 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) || nilfs_direct_get_ptr(direct, key) == NILFS_BMAP_INVALID_PTR) return -ENOENT; ret = nilfs_direct_prepare_delete(direct, &req, key, &stats); if (ret < 0) return ret; nilfs_direct_commit_delete(direct, &req, key); nilfs_bmap_sub_blocks(bmap, stats.bs_nblocks); return 0; }
static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key) { struct nilfs_direct *direct = (struct nilfs_direct *)bmap; union nilfs_bmap_ptr_req req; struct inode *dat; int ret; if (key > NILFS_DIRECT_KEY_MAX || nilfs_direct_get_ptr(direct, key) == NILFS_BMAP_INVALID_PTR) return -ENOENT; dat = NILFS_BMAP_USE_VBN(bmap) ? nilfs_bmap_get_dat(bmap) : NULL; req.bpr_ptr = nilfs_direct_get_ptr(direct, key); ret = nilfs_bmap_prepare_end_ptr(bmap, &req, dat); if (!ret) { nilfs_bmap_commit_end_ptr(bmap, &req, dat); nilfs_direct_set_ptr(direct, key, NILFS_BMAP_INVALID_PTR); nilfs_bmap_sub_blocks(bmap, 1); } return ret; }