70 	struct squashfs_sb_info *msblk;  in squashfs_fill_super()  local
81 	sb->s_fs_info = kzalloc(sizeof(*msblk), GFP_KERNEL);  in squashfs_fill_super()
86 	msblk = sb->s_fs_info;  in squashfs_fill_super()
88 	msblk->devblksize = sb_min_blocksize(sb, SQUASHFS_DEVBLK_SIZE);  in squashfs_fill_super()
89 	msblk->devblksize_log2 = ffz(~msblk->devblksize);  in squashfs_fill_super()
91 	mutex_init(&msblk->meta_index_mutex);  in squashfs_fill_super()
99 	msblk->bytes_used = sizeof(*sblk);  in squashfs_fill_super()
121 	msblk->decompressor = supported_squashfs_filesystem(  in squashfs_fill_super()
126 	if (msblk->decompressor == NULL)  in squashfs_fill_super()
131 	msblk->bytes_used = le64_to_cpu(sblk->bytes_used);  in squashfs_fill_super()
132 	if (msblk->bytes_used < 0 || msblk->bytes_used >  in squashfs_fill_super()
137 	msblk->block_size = le32_to_cpu(sblk->block_size);  in squashfs_fill_super()
138 	if (msblk->block_size > SQUASHFS_FILE_MAX_SIZE)  in squashfs_fill_super()
145 	if (PAGE_SIZE > msblk->block_size) {  in squashfs_fill_super()
147 		       "currently not supported!", msblk->block_size);  in squashfs_fill_super()
152 	msblk->block_log = le16_to_cpu(sblk->block_log);  in squashfs_fill_super()
153 	if (msblk->block_log > SQUASHFS_FILE_MAX_LOG)  in squashfs_fill_super()
157 	if (msblk->block_size != (1 << msblk->block_log))  in squashfs_fill_super()
165 	msblk->inode_table = le64_to_cpu(sblk->inode_table_start);  in squashfs_fill_super()
166 	msblk->directory_table = le64_to_cpu(sblk->directory_table_start);  in squashfs_fill_super()
167 	msblk->inodes = le32_to_cpu(sblk->inodes);  in squashfs_fill_super()
168 	msblk->fragments = le32_to_cpu(sblk->fragments);  in squashfs_fill_super()
176 	TRACE("Filesystem size %lld bytes\n", msblk->bytes_used);  in squashfs_fill_super()
177 	TRACE("Block size %d\n", msblk->block_size);  in squashfs_fill_super()
178 	TRACE("Number of inodes %d\n", msblk->inodes);  in squashfs_fill_super()
179 	TRACE("Number of fragments %d\n", msblk->fragments);  in squashfs_fill_super()
181 	TRACE("sblk->inode_table_start %llx\n", msblk->inode_table);  in squashfs_fill_super()
182 	TRACE("sblk->directory_table_start %llx\n", msblk->directory_table);  in squashfs_fill_super()
196 	msblk->block_cache = squashfs_cache_init("metadata",  in squashfs_fill_super()
198 	if (msblk->block_cache == NULL)  in squashfs_fill_super()
202 	msblk->read_page = squashfs_cache_init("data",  in squashfs_fill_super()
203 		squashfs_max_decompressors(), msblk->block_size);  in squashfs_fill_super()
204 	if (msblk->read_page == NULL) {  in squashfs_fill_super()
209 	msblk->stream = squashfs_decompressor_setup(sb, flags);  in squashfs_fill_super()
210 	if (IS_ERR(msblk->stream)) {  in squashfs_fill_super()
211 		err = PTR_ERR(msblk->stream);  in squashfs_fill_super()
212 		msblk->stream = NULL;  in squashfs_fill_super()
220 		next_table = msblk->bytes_used;  in squashfs_fill_super()
225 	msblk->xattr_id_table = squashfs_read_xattr_id_table(sb,  in squashfs_fill_super()
226 		xattr_id_table_start, &msblk->xattr_table, &msblk->xattr_ids);  in squashfs_fill_super()
227 	if (IS_ERR(msblk->xattr_id_table)) {  in squashfs_fill_super()
229 		err = PTR_ERR(msblk->xattr_id_table);  in squashfs_fill_super()
230 		msblk->xattr_id_table = NULL;  in squashfs_fill_super()
234 	next_table = msblk->xattr_table;  in squashfs_fill_super()
238 	msblk->id_table = squashfs_read_id_index_table(sb,  in squashfs_fill_super()
241 	if (IS_ERR(msblk->id_table)) {  in squashfs_fill_super()
243 		err = PTR_ERR(msblk->id_table);  in squashfs_fill_super()
244 		msblk->id_table = NULL;  in squashfs_fill_super()
247 	next_table = le64_to_cpu(msblk->id_table[0]);  in squashfs_fill_super()
255 	msblk->inode_lookup_table = squashfs_read_inode_lookup_table(sb,  in squashfs_fill_super()
256 		lookup_table_start, next_table, msblk->inodes);  in squashfs_fill_super()
257 	if (IS_ERR(msblk->inode_lookup_table)) {  in squashfs_fill_super()
259 		err = PTR_ERR(msblk->inode_lookup_table);  in squashfs_fill_super()
260 		msblk->inode_lookup_table = NULL;  in squashfs_fill_super()
263 	next_table = le64_to_cpu(msblk->inode_lookup_table[0]);  in squashfs_fill_super()
268 	fragments = msblk->fragments;  in squashfs_fill_super()
272 	msblk->fragment_cache = squashfs_cache_init("fragment",  in squashfs_fill_super()
273 		SQUASHFS_CACHED_FRAGMENTS, msblk->block_size);  in squashfs_fill_super()
274 	if (msblk->fragment_cache == NULL) {  in squashfs_fill_super()
280 	msblk->fragment_index = squashfs_read_fragment_index_table(sb,  in squashfs_fill_super()
282 	if (IS_ERR(msblk->fragment_index)) {  in squashfs_fill_super()
284 		err = PTR_ERR(msblk->fragment_index);  in squashfs_fill_super()
285 		msblk->fragment_index = NULL;  in squashfs_fill_super()
288 	next_table = le64_to_cpu(msblk->fragment_index[0]);  in squashfs_fill_super()
292 	if (msblk->directory_table > next_table) {  in squashfs_fill_super()
298 	if (msblk->inode_table >= msblk->directory_table) {  in squashfs_fill_super()
332 	squashfs_cache_delete(msblk->block_cache);  in squashfs_fill_super()
333 	squashfs_cache_delete(msblk->fragment_cache);  in squashfs_fill_super()
334 	squashfs_cache_delete(msblk->read_page);  in squashfs_fill_super()
335 	squashfs_decompressor_destroy(msblk);  in squashfs_fill_super()
336 	kfree(msblk->inode_lookup_table);  in squashfs_fill_super()
337 	kfree(msblk->fragment_index);  in squashfs_fill_super()
338 	kfree(msblk->id_table);  in squashfs_fill_super()
339 	kfree(msblk->xattr_id_table);  in squashfs_fill_super()
371 	struct squashfs_sb_info *msblk = dentry->d_sb->s_fs_info;  in squashfs_statfs()  local
377 	buf->f_bsize = msblk->block_size;  in squashfs_statfs()
378 	buf->f_blocks = ((msblk->bytes_used - 1) >> msblk->block_log) + 1;  in squashfs_statfs()
380 	buf->f_files = msblk->inodes;  in squashfs_statfs()