1850 	 * If we just need to split the header or tail clusters,  in ocfs2_split_refcount_rec()
2328  * Mark the already-existing extent at cpos as refcounted for len clusters.
2365  * Given some contiguous physical clusters, calculate what we need
2372 					    u32 clusters,  in ocfs2_calc_refcount_meta_credits()  argument
2383 	while (clusters) {  in ocfs2_calc_refcount_meta_credits()
2385 					     cpos, clusters, &rec,  in ocfs2_calc_refcount_meta_credits()
2415 				recs_add, (unsigned long long)cpos, clusters,  in ocfs2_calc_refcount_meta_credits()
2420 		len = min((u64)cpos + clusters, le64_to_cpu(rec.r_cpos) +  in ocfs2_calc_refcount_meta_credits()
2449 			if (cpos + clusters < le64_to_cpu(rec.r_cpos) +  in ocfs2_calc_refcount_meta_credits()
2457 		clusters -= len;  in ocfs2_calc_refcount_meta_credits()
2500 		(unsigned long long)start_cpos, clusters,  in ocfs2_calc_refcount_meta_credits()
2508  * For refcount tree, we will decrease some contiguous clusters
2522 					  u32 clusters,  in ocfs2_prepare_refcount_change_for_del()  argument
2556 					       start_cpos, clusters,  in ocfs2_prepare_refcount_change_for_del()
2617  * Calculate out the start and number of virtual clusters we need to CoW.
2705 		 * How many clusters do we actually need from  in ocfs2_refcount_cal_cow_clusters()
2732 			 * how many clusters to grab.  We align  in ocfs2_refcount_cal_cow_clusters()
2799 		 * clusters, continue with the next extent block if possible.  in ocfs2_refcount_cal_cow_clusters()
2828  * clusters(starting form p_cluster) in the refcount tree.
2833  * 2. In some case, we may not need to reserve new clusters(e.g, reflink), so
3126 	/*If the old clusters is unwritten, no need to duplicate. */  in ocfs2_replace_clusters()
3232 		 * 2. If refcount > 1, allocate clusters.  in ocfs2_make_clusters_writable()
3375  * Starting at cpos, try to CoW write_len clusters.  Don't CoW
3451  * CoW any and all clusters between cpos and cpos+write_len.
3453  * clusters between cpos and cpos+write_len are safe to modify.
3515 	u32 cpos = 0, clusters = le32_to_cpu(xv->xr_clusters);  in ocfs2_refcounted_xattr_delete_need()  local
3520 	while (cpos < clusters) {  in ocfs2_refcounted_xattr_delete_need()
3546 			 * We really don't know whether the other clusters is in  in ocfs2_refcounted_xattr_delete_need()
3548 			 * case that all the clusters are in this block and each  in ocfs2_refcounted_xattr_delete_need()
3550 			 * clusters * 2 new refcount rec.  in ocfs2_refcounted_xattr_delete_need()
3552 			if (le16_to_cpu(rb->rf_records.rl_used) + clusters * 2 >  in ocfs2_refcounted_xattr_delete_need()
3775 	u32 cpos, num_clusters, clusters, p_cluster;  in ocfs2_attach_refcount_tree()  local
3804 	clusters = ocfs2_clusters_for_bytes(inode->i_sb, size);  in ocfs2_attach_refcount_tree()
3807 	while (cpos < clusters) {  in ocfs2_attach_refcount_tree()
3977 	u32 p_cluster, num_clusters, clusters, cpos;  in ocfs2_duplicate_extent_list()  local
3985 	clusters = ocfs2_clusters_for_bytes(s_inode->i_sb, size);  in ocfs2_duplicate_extent_list()
3988 	while (cpos < clusters) {  in ocfs2_duplicate_extent_list()