174 	struct erofs_sb_info *sbi = EROFS_SB(sb);  in erofs_init_device()  local
185 	if (!sbi->devs->flatdev && !dif->path) {  in erofs_init_device()
200 	} else if (!sbi->devs->flatdev) {  in erofs_init_device()
212 	sbi->total_blocks += dif->blocks;  in erofs_init_device()
220 	struct erofs_sb_info *sbi = EROFS_SB(sb);  in erofs_scan_devices()  local
227 	sbi->total_blocks = sbi->primarydevice_blocks;  in erofs_scan_devices()
228 	if (!erofs_sb_has_device_table(sbi))  in erofs_scan_devices()
233 	if (sbi->devs->extra_devices &&  in erofs_scan_devices()
234 	    ondisk_extradevs != sbi->devs->extra_devices) {  in erofs_scan_devices()
236 			  ondisk_extradevs, sbi->devs->extra_devices);  in erofs_scan_devices()
242 	if (!sbi->devs->extra_devices && !erofs_is_fscache_mode(sb))  in erofs_scan_devices()
243 		sbi->devs->flatdev = true;  in erofs_scan_devices()
245 	sbi->device_id_mask = roundup_pow_of_two(ondisk_extradevs + 1) - 1;  in erofs_scan_devices()
247 	down_read(&sbi->devs->rwsem);  in erofs_scan_devices()
248 	if (sbi->devs->extra_devices) {  in erofs_scan_devices()
249 		idr_for_each_entry(&sbi->devs->tree, dif, id) {  in erofs_scan_devices()
262 			err = idr_alloc(&sbi->devs->tree, dif, 0, 0, GFP_KERNEL);  in erofs_scan_devices()
267 			++sbi->devs->extra_devices;  in erofs_scan_devices()
274 	up_read(&sbi->devs->rwsem);  in erofs_scan_devices()
281 	struct erofs_sb_info *sbi;  in erofs_read_superblock()  local
293 	sbi = EROFS_SB(sb);  in erofs_read_superblock()
302 	sbi->blkszbits  = dsb->blkszbits;  in erofs_read_superblock()
303 	if (sbi->blkszbits < 9 || sbi->blkszbits > PAGE_SHIFT) {  in erofs_read_superblock()
304 		erofs_err(sb, "blkszbits %u isn't supported", sbi->blkszbits);  in erofs_read_superblock()
312 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
313 	if (erofs_sb_has_sb_chksum(sbi)) {  in erofs_read_superblock()
323 	sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE;  in erofs_read_superblock()
324 	if (sbi->sb_size > PAGE_SIZE - EROFS_SUPER_OFFSET) {  in erofs_read_superblock()
326 			  sbi->sb_size);  in erofs_read_superblock()
329 	sbi->primarydevice_blocks = le32_to_cpu(dsb->blocks);  in erofs_read_superblock()
330 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
332 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
333 	sbi->xattr_prefix_start = le32_to_cpu(dsb->xattr_prefix_start);  in erofs_read_superblock()
334 	sbi->xattr_prefix_count = dsb->xattr_prefix_count;  in erofs_read_superblock()
335 	sbi->xattr_filter_reserved = dsb->xattr_filter_reserved;  in erofs_read_superblock()
337 	sbi->islotbits = ilog2(sizeof(struct erofs_inode_compact));  in erofs_read_superblock()
338 	sbi->root_nid = le16_to_cpu(dsb->root_nid);  in erofs_read_superblock()
339 	sbi->packed_nid = le64_to_cpu(dsb->packed_nid);  in erofs_read_superblock()
340 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
342 	sbi->build_time = le64_to_cpu(dsb->build_time);  in erofs_read_superblock()
343 	sbi->build_time_nsec = le32_to_cpu(dsb->build_time_nsec);  in erofs_read_superblock()
347 	ret = strscpy(sbi->volume_name, dsb->volume_name,  in erofs_read_superblock()
370 static void erofs_default_options(struct erofs_sb_info *sbi)  in erofs_default_options()  argument
373 	sbi->opt.cache_strategy = EROFS_ZIP_CACHE_READAROUND;  in erofs_default_options()
374 	sbi->opt.max_sync_decompress_pages = 3;  in erofs_default_options()
375 	sbi->opt.sync_decompress = EROFS_SYNC_DECOMPRESS_AUTO;  in erofs_default_options()
378 	set_opt(&sbi->opt, XATTR_USER);  in erofs_default_options()
381 	set_opt(&sbi->opt, POSIX_ACL);  in erofs_default_options()
426 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_set_dax_mode()  local
431 		set_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_set_dax_mode()
432 		clear_opt(&sbi->opt, DAX_NEVER);  in erofs_fc_set_dax_mode()
435 		set_opt(&sbi->opt, DAX_NEVER);  in erofs_fc_set_dax_mode()
436 		clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_set_dax_mode()
451 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_parse_param()  local
464 			set_opt(&sbi->opt, XATTR_USER);  in erofs_fc_parse_param()
466 			clear_opt(&sbi->opt, XATTR_USER);  in erofs_fc_parse_param()
474 			set_opt(&sbi->opt, POSIX_ACL);  in erofs_fc_parse_param()
476 			clear_opt(&sbi->opt, POSIX_ACL);  in erofs_fc_parse_param()
483 		sbi->opt.cache_strategy = result.uint_32;  in erofs_fc_parse_param()
505 		down_write(&sbi->devs->rwsem);  in erofs_fc_parse_param()
506 		ret = idr_alloc(&sbi->devs->tree, dif, 0, 0, GFP_KERNEL);  in erofs_fc_parse_param()
507 		up_write(&sbi->devs->rwsem);  in erofs_fc_parse_param()
513 		++sbi->devs->extra_devices;  in erofs_fc_parse_param()
517 		kfree(sbi->fsid);  in erofs_fc_parse_param()
518 		sbi->fsid = kstrdup(param->string, GFP_KERNEL);  in erofs_fc_parse_param()
519 		if (!sbi->fsid)  in erofs_fc_parse_param()
523 		kfree(sbi->domain_id);  in erofs_fc_parse_param()
524 		sbi->domain_id = kstrdup(param->string, GFP_KERNEL);  in erofs_fc_parse_param()
525 		if (!sbi->domain_id)  in erofs_fc_parse_param()
581 	struct erofs_sb_info *sbi = EROFS_SB(sb);  in erofs_fc_fill_super()  local
589 	sbi->blkszbits = PAGE_SHIFT;  in erofs_fc_fill_super()
607 		sbi->dax_dev = fs_dax_get_by_bdev(sb->s_bdev,  in erofs_fc_fill_super()
608 						  &sbi->dax_part_off,  in erofs_fc_fill_super()
616 	if (sb->s_blocksize_bits != sbi->blkszbits) {  in erofs_fc_fill_super()
621 		if (!sb_set_blocksize(sb, 1 << sbi->blkszbits)) {  in erofs_fc_fill_super()
627 	if (test_opt(&sbi->opt, DAX_ALWAYS)) {  in erofs_fc_fill_super()
628 		if (!sbi->dax_dev) {  in erofs_fc_fill_super()
630 			clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_fill_super()
631 		} else if (sbi->blkszbits != PAGE_SHIFT) {  in erofs_fc_fill_super()
633 			clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_fill_super()
641 	if (test_opt(&sbi->opt, POSIX_ACL))  in erofs_fc_fill_super()
647 	xa_init(&sbi->managed_pslots);  in erofs_fc_fill_super()
650 	inode = erofs_iget(sb, ROOT_NID(sbi));  in erofs_fc_fill_super()
656 			  ROOT_NID(sbi), inode->i_mode);  in erofs_fc_fill_super()
666 	if (erofs_sb_has_fragments(sbi) && sbi->packed_nid) {  in erofs_fc_fill_super()
667 		sbi->packed_inode = erofs_iget(sb, sbi->packed_nid);  in erofs_fc_fill_super()
668 		if (IS_ERR(sbi->packed_inode)) {  in erofs_fc_fill_super()
669 			err = PTR_ERR(sbi->packed_inode);  in erofs_fc_fill_super()
670 			sbi->packed_inode = NULL;  in erofs_fc_fill_super()
686 	erofs_info(sb, "mounted with root inode @ nid %llu.", ROOT_NID(sbi));  in erofs_fc_fill_super()
692 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_get_tree()  local
694 	if (IS_ENABLED(CONFIG_EROFS_FS_ONDEMAND) && sbi->fsid)  in erofs_fc_get_tree()
703 	struct erofs_sb_info *sbi = EROFS_SB(sb);  in erofs_fc_reconfigure()  local
716 	sbi->opt = new_sbi->opt;  in erofs_fc_reconfigure()
747 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_free()  local
749 	if (!sbi)  in erofs_fc_free()
752 	erofs_free_dev_context(sbi->devs);  in erofs_fc_free()
753 	kfree(sbi->fsid);  in erofs_fc_free()
754 	kfree(sbi->domain_id);  in erofs_fc_free()
755 	kfree(sbi);  in erofs_fc_free()
767 	struct erofs_sb_info *sbi;  in erofs_init_fs_context()  local
769 	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);  in erofs_init_fs_context()
770 	if (!sbi)  in erofs_init_fs_context()
773 	sbi->devs = kzalloc(sizeof(struct erofs_dev_context), GFP_KERNEL);  in erofs_init_fs_context()
774 	if (!sbi->devs) {  in erofs_init_fs_context()
775 		kfree(sbi);  in erofs_init_fs_context()
778 	fc->s_fs_info = sbi;  in erofs_init_fs_context()
780 	idr_init(&sbi->devs->tree);  in erofs_init_fs_context()
781 	init_rwsem(&sbi->devs->rwsem);  in erofs_init_fs_context()
782 	erofs_default_options(sbi);  in erofs_init_fs_context()
789 	struct erofs_sb_info *sbi = EROFS_SB(sb);  in erofs_kill_sb()  local
791 	if (IS_ENABLED(CONFIG_EROFS_FS_ONDEMAND) && sbi->fsid)  in erofs_kill_sb()
796 	erofs_free_dev_context(sbi->devs);  in erofs_kill_sb()
797 	fs_put_dax(sbi->dax_dev, NULL);  in erofs_kill_sb()
799 	kfree(sbi->fsid);  in erofs_kill_sb()
800 	kfree(sbi->domain_id);  in erofs_kill_sb()
801 	kfree(sbi);  in erofs_kill_sb()
807 	struct erofs_sb_info *const sbi = EROFS_SB(sb);  in erofs_put_super()  local
809 	DBG_BUGON(!sbi);  in erofs_put_super()
815 	iput(sbi->managed_cache);  in erofs_put_super()
816 	sbi->managed_cache = NULL;  in erofs_put_super()
818 	iput(sbi->packed_inode);  in erofs_put_super()
819 	sbi->packed_inode = NULL;  in erofs_put_super()
820 	erofs_free_dev_context(sbi->devs);  in erofs_put_super()
821 	sbi->devs = NULL;  in erofs_put_super()
908 	struct erofs_sb_info *sbi = EROFS_SB(sb);  in erofs_statfs()  local
916 	buf->f_blocks = sbi->total_blocks;  in erofs_statfs()
920 	buf->f_ffree = ULLONG_MAX - sbi->inos;  in erofs_statfs()
930 	struct erofs_sb_info *sbi = EROFS_SB(root->d_sb);  in erofs_show_options()  local
931 	struct erofs_mount_opts *opt = &sbi->opt;  in erofs_show_options()
958 	if (sbi->fsid)  in erofs_show_options()
959 		seq_printf(seq, ",fsid=%s", sbi->fsid);  in erofs_show_options()
960 	if (sbi->domain_id)  in erofs_show_options()
961 		seq_printf(seq, ",domain_id=%s", sbi->domain_id);  in erofs_show_options()