53 static void init_chunk_info(ext2_filsys fs, struct chunk_info *info)  in init_chunk_info()  argument
57 	info->blocksize_bits = ul_log2((unsigned long)fs->blocksize);  in init_chunk_info()
58 	if (info->chunkbytes) {  in init_chunk_info()
59 		info->chunkbits = ul_log2(info->chunkbytes);  in init_chunk_info()
60 		info->blks_in_chunk = info->chunkbytes >> info->blocksize_bits;  in init_chunk_info()
62 		info->chunkbits = ul_log2(DEFAULT_CHUNKSIZE);  in init_chunk_info()
63 		info->blks_in_chunk = DEFAULT_CHUNKSIZE >> info->blocksize_bits;  in init_chunk_info()
66 	info->min = ~0UL;  in init_chunk_info()
67 	info->max = info->avg = 0;  in init_chunk_info()
68 	info->real_free_chunks = 0;  in init_chunk_info()
71 		info->histogram.fc_chunks[i] = 0;  in init_chunk_info()
72 		info->histogram.fc_blocks[i] = 0;  in init_chunk_info()
76 static void update_chunk_stats(struct chunk_info *info,  in update_chunk_stats()  argument
84 	info->histogram.fc_chunks[idx]++;  in update_chunk_stats()
85 	info->histogram.fc_blocks[idx] += chunk_size;  in update_chunk_stats()
87 	if (chunk_size > info->max)  in update_chunk_stats()
88 		info->max = chunk_size;  in update_chunk_stats()
89 	if (chunk_size < info->min)  in update_chunk_stats()
90 		info->min = chunk_size;  in update_chunk_stats()
91 	info->avg += chunk_size;  in update_chunk_stats()
92 	info->real_free_chunks++;  in update_chunk_stats()
95 static void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)  in scan_block_bitmap()  argument
98 	unsigned long long chunks = (blocks_count + info->blks_in_chunk) >>  in scan_block_bitmap()
99 				(info->chunkbits - info->blocksize_bits);  in scan_block_bitmap()
110 		if (chunk_start_blk + info->blks_in_chunk > blocks_count)  in scan_block_bitmap()
113 			num_blks = info->blks_in_chunk;  in scan_block_bitmap()
133 				update_chunk_stats(info, last_chunk_size);  in scan_block_bitmap()
138 		if (chunk_free == info->blks_in_chunk)  in scan_block_bitmap()
139 			info->free_chunks++;  in scan_block_bitmap()
142 		update_chunk_stats(info, last_chunk_size);  in scan_block_bitmap()
145 static errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info,  in get_chunk_info()  argument
154 	scan_block_bitmap(fs, info);  in get_chunk_info()
161 	if (info->chunkbytes) {  in get_chunk_info()
163 			info->chunkbytes, info->blks_in_chunk);  in get_chunk_info()
165 				info->blks_in_chunk) >>  in get_chunk_info()
166 			(info->chunkbits - info->blocksize_bits);  in get_chunk_info()
168 			total_chunks, info->free_chunks,  in get_chunk_info()
169 			(double)info->free_chunks * 100 / total_chunks);  in get_chunk_info()
173 	if (info->real_free_chunks) {  in get_chunk_info()
175 		info->min = info->min * scale;  in get_chunk_info()
176 		info->max = info->max * scale;  in get_chunk_info()
177 		info->avg = info->avg / info->real_free_chunks * scale;  in get_chunk_info()
179 		info->min = 0;  in get_chunk_info()
183 		"Avg. free extent: %lu KB\n", info->min, info->max, info->avg);  in get_chunk_info()
184 	fprintf(f, "Num. free extent: %lu\n", info->real_free_chunks);  in get_chunk_info()
190 		end = 1 << (i + info->blocksize_bits - units);  in get_chunk_info()
191 		if (info->histogram.fc_chunks[i] != 0) {  in get_chunk_info()
199 				info->histogram.fc_chunks[i],  in get_chunk_info()
200 				info->histogram.fc_blocks[i],  in get_chunk_info()
201 				(double)info->histogram.fc_blocks[i] * 100 /  in get_chunk_info()
241 		com_err(fs->device_name, retval, "while collecting chunk info");  in collect_info()