1844 	 * If we just need to split the header or tail clusters,  in ocfs2_split_refcount_rec()
2322  * Mark the already-existing extent at cpos as refcounted for len clusters.
2359  * Given some contiguous physical clusters, calculate what we need
2366 					    u32 clusters,  in ocfs2_calc_refcount_meta_credits()  argument
2377 	while (clusters) {  in ocfs2_calc_refcount_meta_credits()
2379 					     cpos, clusters, &rec,  in ocfs2_calc_refcount_meta_credits()
2409 				recs_add, (unsigned long long)cpos, clusters,  in ocfs2_calc_refcount_meta_credits()
2414 		len = min((u64)cpos + clusters, le64_to_cpu(rec.r_cpos) +  in ocfs2_calc_refcount_meta_credits()
2443 			if (cpos + clusters < le64_to_cpu(rec.r_cpos) +  in ocfs2_calc_refcount_meta_credits()
2451 		clusters -= len;  in ocfs2_calc_refcount_meta_credits()
2494 		(unsigned long long)start_cpos, clusters,  in ocfs2_calc_refcount_meta_credits()
2502  * For refcount tree, we will decrease some contiguous clusters
2516 					  u32 clusters,  in ocfs2_prepare_refcount_change_for_del()  argument
2550 					       start_cpos, clusters,  in ocfs2_prepare_refcount_change_for_del()
2611  * Calculate out the start and number of virtual clusters we need to CoW.
2699 		 * How many clusters do we actually need from  in ocfs2_refcount_cal_cow_clusters()
2726 			 * how many clusters to grab.  We align  in ocfs2_refcount_cal_cow_clusters()
2793 		 * clusters, continue with the next extent block if possible.  in ocfs2_refcount_cal_cow_clusters()
2822  * clusters(starting form p_cluster) in the refcount tree.
2827  * 2. In some case, we may not need to reserve new clusters(e.g, reflink), so
3121 	/*If the old clusters is unwritten, no need to duplicate. */  in ocfs2_replace_clusters()
3227 		 * 2. If refcount > 1, allocate clusters.  in ocfs2_make_clusters_writable()
3370  * Starting at cpos, try to CoW write_len clusters.  Don't CoW
3446  * CoW any and all clusters between cpos and cpos+write_len.
3448  * clusters between cpos and cpos+write_len are safe to modify.
3510 	u32 cpos = 0, clusters = le32_to_cpu(xv->xr_clusters);  in ocfs2_refcounted_xattr_delete_need()  local
3515 	while (cpos < clusters) {  in ocfs2_refcounted_xattr_delete_need()
3541 			 * We really don't know whether the other clusters is in  in ocfs2_refcounted_xattr_delete_need()
3543 			 * case that all the clusters are in this block and each  in ocfs2_refcounted_xattr_delete_need()
3545 			 * clusters * 2 new refcount rec.  in ocfs2_refcounted_xattr_delete_need()
3547 			if (le16_to_cpu(rb->rf_records.rl_used) + clusters * 2 >  in ocfs2_refcounted_xattr_delete_need()
3770 	u32 cpos, num_clusters, clusters, p_cluster;  in ocfs2_attach_refcount_tree()  local
3799 	clusters = ocfs2_clusters_for_bytes(inode->i_sb, size);  in ocfs2_attach_refcount_tree()
3802 	while (cpos < clusters) {  in ocfs2_attach_refcount_tree()
3972 	u32 p_cluster, num_clusters, clusters, cpos;  in ocfs2_duplicate_extent_list()  local
3980 	clusters = ocfs2_clusters_for_bytes(s_inode->i_sb, size);  in ocfs2_duplicate_extent_list()
3983 	while (cpos < clusters) {  in ocfs2_duplicate_extent_list()