int ocfs2_reserve_new_metadata(struct ocfs2_super *osb, struct ocfs2_extent_list *root_el, struct ocfs2_alloc_context **ac) { return ocfs2_reserve_new_metadata_blocks(osb, ocfs2_extend_meta_needed(root_el), ac); }
/* * lock allocators, and reserving appropriate number of bits for * meta blocks and data clusters. * * in some cases, we don't need to reserve clusters, just let data_ac * be NULL. */ static int ocfs2_lock_allocators_move_extents(struct inode *inode, struct ocfs2_extent_tree *et, u32 clusters_to_move, u32 extents_to_split, struct ocfs2_alloc_context **meta_ac, struct ocfs2_alloc_context **data_ac, int extra_blocks, int *credits) { int ret, num_free_extents; unsigned int max_recs_needed = 2 * extents_to_split + clusters_to_move; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); num_free_extents = ocfs2_num_free_extents(osb, et); if (num_free_extents < 0) { ret = num_free_extents; mlog_errno(ret); goto out; } if (!num_free_extents || (ocfs2_sparse_alloc(osb) && num_free_extents < max_recs_needed)) extra_blocks += ocfs2_extend_meta_needed(et->et_root_el); ret = ocfs2_reserve_new_metadata_blocks(osb, extra_blocks, meta_ac); if (ret) { mlog_errno(ret); goto out; } if (data_ac) { ret = ocfs2_reserve_clusters(osb, clusters_to_move, data_ac); if (ret) { mlog_errno(ret); goto out; } } *credits += ocfs2_calc_extend_credits(osb->sb, et->et_root_el, clusters_to_move + 2); mlog(0, "reserve metadata_blocks: %d, data_clusters: %u, credits: %d\n", extra_blocks, clusters_to_move, *credits); out: if (ret) { if (*meta_ac) { ocfs2_free_alloc_context(*meta_ac); *meta_ac = NULL; } } return ret; }