1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2017-2018 HUAWEI, Inc.
13 #include <linux/backing-dev.h>
34 				KERN_SOH_ASCII, level, sb->s_id, &vaf);  in _erofs_printk()
43 	u32 len = 1 << EROFS_SB(sb)->blkszbits, crc;  in erofs_superblock_csum_verify()
46 		len -= EROFS_SUPER_OFFSET;  in erofs_superblock_csum_verify()
47 	len -= offsetof(struct erofs_super_block, checksum) +  in erofs_superblock_csum_verify()
48 			sizeof(dsb->checksum);  in erofs_superblock_csum_verify()
50 	/* skip .magic(pre-verified) and .checksum(0) fields */  in erofs_superblock_csum_verify()
51 	crc = crc32c(0x5045B54A, (&dsb->checksum) + 1, len);  in erofs_superblock_csum_verify()
52 	if (crc == le32_to_cpu(dsb->checksum))  in erofs_superblock_csum_verify()
55 		  crc, le32_to_cpu(dsb->checksum));  in erofs_superblock_csum_verify()
56 	return -EBADMSG;  in erofs_superblock_csum_verify()
63 	inode_init_once(&vi->vfs_inode);  in erofs_inode_init_once()
76 	return &vi->vfs_inode;  in erofs_alloc_inode()
83 	if (inode->i_op == &erofs_fast_symlink_iops)  in erofs_free_inode()
84 		kfree(inode->i_link);  in erofs_free_inode()
85 	kfree(vi->xattr_shared_xattrs);  in erofs_free_inode()
89 /* read variable-sized metadata, offset will be aligned by 4-byte */
106 		return ERR_PTR(-ENOMEM);  in erofs_read_metadata()
111 		cnt = min_t(int, sb->s_blocksize - erofs_blkoff(sb, *offset),  in erofs_read_metadata()
112 			    len - i);  in erofs_read_metadata()
128 	if (!dsb->u1.available_compr_algs)  in z_erofs_parse_cfgs()
132 	return -EOPNOTSUPP;  in z_erofs_parse_cfgs()
148 	if (!sbi->devs->flatdev && !dif->path) {  in erofs_init_device()
149 		if (!dis->tag[0]) {  in erofs_init_device()
151 			return -EINVAL;  in erofs_init_device()
153 		dif->path = kmemdup_nul(dis->tag, sizeof(dis->tag), GFP_KERNEL);  in erofs_init_device()
154 		if (!dif->path)  in erofs_init_device()
155 			return -ENOMEM;  in erofs_init_device()
159 		fscache = erofs_fscache_register_cookie(sb, dif->path, 0);  in erofs_init_device()
162 		dif->fscache = fscache;  in erofs_init_device()
163 	} else if (!sbi->devs->flatdev) {  in erofs_init_device()
165 				filp_open(dif->path, O_RDONLY | O_LARGEFILE, 0) :  in erofs_init_device()
166 				bdev_file_open_by_path(dif->path,  in erofs_init_device()
167 						BLK_OPEN_READ, sb->s_type, NULL);  in erofs_init_device()
169 			if (file == ERR_PTR(-ENOTBLK))  in erofs_init_device()
170 				return -EINVAL;  in erofs_init_device()
175 			dif->dax_dev = fs_dax_get_by_bdev(file_bdev(file),  in erofs_init_device()
176 					&dif->dax_part_off, NULL, NULL);  in erofs_init_device()
177 			if (!dif->dax_dev && test_opt(&sbi->opt, DAX_ALWAYS)) {  in erofs_init_device()
179 					   dif->path);  in erofs_init_device()
180 				clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_init_device()
182 		} else if (!S_ISREG(file_inode(file)->i_mode)) {  in erofs_init_device()
184 			return -EINVAL;  in erofs_init_device()
186 		dif->file = file;  in erofs_init_device()
189 	dif->blocks = le32_to_cpu(dis->blocks_lo);  in erofs_init_device()
190 	dif->uniaddr = le32_to_cpu(dis->uniaddr_lo);  in erofs_init_device()
191 	sbi->total_blocks += dif->blocks;  in erofs_init_device()
206 	sbi->total_blocks = sbi->dif0.blocks;  in erofs_scan_devices()
210 		ondisk_extradevs = le16_to_cpu(dsb->extra_devices);  in erofs_scan_devices()
212 	if (sbi->devs->extra_devices &&  in erofs_scan_devices()
213 	    ondisk_extradevs != sbi->devs->extra_devices) {  in erofs_scan_devices()
215 			  ondisk_extradevs, sbi->devs->extra_devices);  in erofs_scan_devices()
216 		return -EINVAL;  in erofs_scan_devices()
219 		if (test_opt(&sbi->opt, DAX_ALWAYS) && !sbi->dif0.dax_dev) {  in erofs_scan_devices()
221 			clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_scan_devices()
226 	if (!sbi->devs->extra_devices && !erofs_is_fscache_mode(sb))  in erofs_scan_devices()
227 		sbi->devs->flatdev = true;  in erofs_scan_devices()
229 	sbi->device_id_mask = roundup_pow_of_two(ondisk_extradevs + 1) - 1;  in erofs_scan_devices()
230 	pos = le16_to_cpu(dsb->devt_slotoff) * EROFS_DEVT_SLOT_SIZE;  in erofs_scan_devices()
231 	down_read(&sbi->devs->rwsem);  in erofs_scan_devices()
232 	if (sbi->devs->extra_devices) {  in erofs_scan_devices()
233 		idr_for_each_entry(&sbi->devs->tree, dif, id) {  in erofs_scan_devices()
242 				err = -ENOMEM;  in erofs_scan_devices()
246 			err = idr_alloc(&sbi->devs->tree, dif, 0, 0, GFP_KERNEL);  in erofs_scan_devices()
251 			++sbi->devs->extra_devices;  in erofs_scan_devices()
258 	up_read(&sbi->devs->rwsem);  in erofs_scan_devices()
278 	ret = -EINVAL;  in erofs_read_superblock()
279 	if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {  in erofs_read_superblock()
284 	sbi->blkszbits = dsb->blkszbits;  in erofs_read_superblock()
285 	if (sbi->blkszbits < 9 || sbi->blkszbits > PAGE_SHIFT) {  in erofs_read_superblock()
286 		erofs_err(sb, "blkszbits %u isn't supported", sbi->blkszbits);  in erofs_read_superblock()
289 	if (dsb->dirblkbits) {  in erofs_read_superblock()
290 		erofs_err(sb, "dirblkbits %u isn't supported", dsb->dirblkbits);  in erofs_read_superblock()
294 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
301 	ret = -EINVAL;  in erofs_read_superblock()
302 	sbi->feature_incompat = le32_to_cpu(dsb->feature_incompat);  in erofs_read_superblock()
303 	if (sbi->feature_incompat & ~EROFS_ALL_FEATURE_INCOMPAT) {  in erofs_read_superblock()
305 			  sbi->feature_incompat & ~EROFS_ALL_FEATURE_INCOMPAT);  in erofs_read_superblock()
309 	sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE;  in erofs_read_superblock()
310 	if (sbi->sb_size > PAGE_SIZE - EROFS_SUPER_OFFSET) {  in erofs_read_superblock()
312 			  sbi->sb_size);  in erofs_read_superblock()
315 	sbi->dif0.blocks = le32_to_cpu(dsb->blocks_lo);  in erofs_read_superblock()
316 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
318 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
319 	sbi->xattr_prefix_start = le32_to_cpu(dsb->xattr_prefix_start);  in erofs_read_superblock()
320 	sbi->xattr_prefix_count = dsb->xattr_prefix_count;  in erofs_read_superblock()
321 	sbi->xattr_filter_reserved = dsb->xattr_filter_reserved;  in erofs_read_superblock()
323 	sbi->islotbits = ilog2(sizeof(struct erofs_inode_compact));  in erofs_read_superblock()
324 	if (erofs_sb_has_48bit(sbi) && dsb->rootnid_8b) {  in erofs_read_superblock()
325 		sbi->root_nid = le64_to_cpu(dsb->rootnid_8b);  in erofs_read_superblock()
326 		sbi->dif0.blocks = sbi->dif0.blocks |  in erofs_read_superblock()
327 				((u64)le16_to_cpu(dsb->rb.blocks_hi) << 32);  in erofs_read_superblock()
329 		sbi->root_nid = le16_to_cpu(dsb->rb.rootnid_2b);  in erofs_read_superblock()
331 	sbi->packed_nid = le64_to_cpu(dsb->packed_nid);  in erofs_read_superblock()
333 		if (sbi->sb_size <= offsetof(struct erofs_super_block,  in erofs_read_superblock()
335 			return -EFSCORRUPTED;  in erofs_read_superblock()
336 		sbi->metabox_nid = le64_to_cpu(dsb->metabox_nid);  in erofs_read_superblock()
337 		if (sbi->metabox_nid & BIT_ULL(EROFS_DIRENT_NID_METABOX_BIT))  in erofs_read_superblock()
338 			return -EFSCORRUPTED;	/* self-loop detection */  in erofs_read_superblock()
340 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
342 	sbi->epoch = (s64)le64_to_cpu(dsb->epoch);  in erofs_read_superblock()
343 	sbi->fixed_nsec = le32_to_cpu(dsb->fixed_nsec);  in erofs_read_superblock()
344 	super_set_uuid(sb, (void *)dsb->uuid, sizeof(dsb->uuid));  in erofs_read_superblock()
346 	if (dsb->volume_name[0]) {  in erofs_read_superblock()
347 		sbi->volume_name = kstrndup(dsb->volume_name,  in erofs_read_superblock()
348 					    sizeof(dsb->volume_name), GFP_KERNEL);  in erofs_read_superblock()
349 		if (!sbi->volume_name)  in erofs_read_superblock()
350 			return -ENOMEM;  in erofs_read_superblock()
353 	/* parse on-disk compression configurations */  in erofs_read_superblock()
361 		erofs_info(sb, "EXPERIMENTAL 48-bit layout support in use. Use at your own risk!");  in erofs_read_superblock()
365 		erofs_info(sb, "[deprecated] fscache-based on-demand read feature in use. Use at your own risk!");  in erofs_read_superblock()
374 	sbi->opt.cache_strategy = EROFS_ZIP_CACHE_READAROUND;  in erofs_default_options()
375 	sbi->opt.max_sync_decompress_pages = 3;  in erofs_default_options()
376 	sbi->opt.sync_decompress = EROFS_SYNC_DECOMPRESS_AUTO;  in erofs_default_options()
379 	set_opt(&sbi->opt, XATTR_USER);  in erofs_default_options()
382 	set_opt(&sbi->opt, POSIX_ACL);  in erofs_default_options()
422 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_set_dax_mode()
426 		set_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_set_dax_mode()
427 		clear_opt(&sbi->opt, DAX_NEVER);  in erofs_fc_set_dax_mode()
430 		set_opt(&sbi->opt, DAX_NEVER);  in erofs_fc_set_dax_mode()
431 		clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_set_dax_mode()
446 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_parse_param()
459 			set_opt(&sbi->opt, XATTR_USER);  in erofs_fc_parse_param()
461 			clear_opt(&sbi->opt, XATTR_USER);  in erofs_fc_parse_param()
469 			set_opt(&sbi->opt, POSIX_ACL);  in erofs_fc_parse_param()
471 			clear_opt(&sbi->opt, POSIX_ACL);  in erofs_fc_parse_param()
478 		sbi->opt.cache_strategy = result.uint_32;  in erofs_fc_parse_param()
485 			return -EINVAL;  in erofs_fc_parse_param()
489 			return -EINVAL;  in erofs_fc_parse_param()
494 			return -ENOMEM;  in erofs_fc_parse_param()
495 		dif->path = kstrdup(param->string, GFP_KERNEL);  in erofs_fc_parse_param()
496 		if (!dif->path) {  in erofs_fc_parse_param()
498 			return -ENOMEM;  in erofs_fc_parse_param()
500 		down_write(&sbi->devs->rwsem);  in erofs_fc_parse_param()
501 		ret = idr_alloc(&sbi->devs->tree, dif, 0, 0, GFP_KERNEL);  in erofs_fc_parse_param()
502 		up_write(&sbi->devs->rwsem);  in erofs_fc_parse_param()
504 			kfree(dif->path);  in erofs_fc_parse_param()
508 		++sbi->devs->extra_devices;  in erofs_fc_parse_param()
512 		kfree(sbi->fsid);  in erofs_fc_parse_param()
513 		sbi->fsid = kstrdup(param->string, GFP_KERNEL);  in erofs_fc_parse_param()
514 		if (!sbi->fsid)  in erofs_fc_parse_param()
515 			return -ENOMEM;  in erofs_fc_parse_param()
518 		kfree(sbi->domain_id);  in erofs_fc_parse_param()
519 		sbi->domain_id = kstrdup(param->string, GFP_KERNEL);  in erofs_fc_parse_param()
520 		if (!sbi->domain_id)  in erofs_fc_parse_param()
521 			return -ENOMEM;  in erofs_fc_parse_param()
532 			set_opt(&sbi->opt, DIRECT_IO);  in erofs_fc_parse_param()
534 			clear_opt(&sbi->opt, DIRECT_IO);  in erofs_fc_parse_param()
540 		sbi->dif0.fsoff = result.uint_64;  in erofs_fc_parse_param()
549 	erofs_nid_t nid = EROFS_I(inode)->nid;  in erofs_encode_fh()
559 	fh[2] = inode->i_generation;  in erofs_encode_fh()
562 		nid = EROFS_I(parent)->nid;  in erofs_encode_fh()
566 		fh[5] = parent->i_generation;  in erofs_encode_fh()
581 		((u64)fid->raw[0] << 32) | fid->raw[1]));  in erofs_fh_to_dentry()
591 		((u64)fid->raw[3] << 32) | fid->raw[4]));  in erofs_fh_to_parent()
603 	return d_obtain_alias(erofs_iget(child->d_sb, nid));  in erofs_get_parent()
617 	if (sbi->domain_id)  in erofs_set_sysfs_name()
618 		super_set_sysfs_name_generic(sb, "%s,%s", sbi->domain_id,  in erofs_set_sysfs_name()
619 					     sbi->fsid);  in erofs_set_sysfs_name()
620 	else if (sbi->fsid)  in erofs_set_sysfs_name()
621 		super_set_sysfs_name_generic(sb, "%s", sbi->fsid);  in erofs_set_sysfs_name()
624 					     bdi_dev_name(sb->s_bdi));  in erofs_set_sysfs_name()
635 	sb->s_magic = EROFS_SUPER_MAGIC;  in erofs_fc_fill_super()
636 	sb->s_flags |= SB_RDONLY | SB_NOATIME;  in erofs_fc_fill_super()
637 	sb->s_maxbytes = MAX_LFS_FILESIZE;  in erofs_fc_fill_super()
638 	sb->s_op = &erofs_sops;  in erofs_fc_fill_super()
640 	sbi->blkszbits = PAGE_SHIFT;  in erofs_fc_fill_super()
641 	if (!sb->s_bdev) {  in erofs_fc_fill_super()
642 		sb->s_blocksize = PAGE_SIZE;  in erofs_fc_fill_super()
643 		sb->s_blocksize_bits = PAGE_SHIFT;  in erofs_fc_fill_super()
656 			return -EINVAL;  in erofs_fc_fill_super()
659 		sbi->dif0.dax_dev = fs_dax_get_by_bdev(sb->s_bdev,  in erofs_fc_fill_super()
660 				&sbi->dif0.dax_part_off, NULL, NULL);  in erofs_fc_fill_super()
667 	if (sb->s_blocksize_bits != sbi->blkszbits) {  in erofs_fc_fill_super()
670 			return -EINVAL;  in erofs_fc_fill_super()
674 			sb->s_blocksize = 1 << sbi->blkszbits;  in erofs_fc_fill_super()
675 			sb->s_blocksize_bits = sbi->blkszbits;  in erofs_fc_fill_super()
676 		} else if (!sb_set_blocksize(sb, 1 << sbi->blkszbits)) {  in erofs_fc_fill_super()
678 			return -EINVAL;  in erofs_fc_fill_super()
682 	if (sbi->dif0.fsoff) {  in erofs_fc_fill_super()
683 		if (sbi->dif0.fsoff & (sb->s_blocksize - 1))  in erofs_fc_fill_super()
685 				       sbi->dif0.fsoff, sb->s_blocksize);  in erofs_fc_fill_super()
690 	if (test_opt(&sbi->opt, DAX_ALWAYS) && sbi->blkszbits != PAGE_SHIFT) {  in erofs_fc_fill_super()
692 		clear_opt(&sbi->opt, DAX_ALWAYS);  in erofs_fc_fill_super()
695 	sb->s_time_gran = 1;  in erofs_fc_fill_super()
696 	sb->s_xattr = erofs_xattr_handlers;  in erofs_fc_fill_super()
697 	sb->s_export_op = &erofs_export_ops;  in erofs_fc_fill_super()
699 	if (test_opt(&sbi->opt, POSIX_ACL))  in erofs_fc_fill_super()
700 		sb->s_flags |= SB_POSIXACL;  in erofs_fc_fill_super()
702 		sb->s_flags &= ~SB_POSIXACL;  in erofs_fc_fill_super()
708 	if (erofs_sb_has_fragments(sbi) && sbi->packed_nid) {  in erofs_fc_fill_super()
709 		inode = erofs_iget(sb, sbi->packed_nid);  in erofs_fc_fill_super()
712 		sbi->packed_inode = inode;  in erofs_fc_fill_super()
715 		inode = erofs_iget(sb, sbi->metabox_nid);  in erofs_fc_fill_super()
718 		sbi->metabox_inode = inode;  in erofs_fc_fill_super()
721 	inode = erofs_iget(sb, sbi->root_nid);  in erofs_fc_fill_super()
725 	if (!S_ISDIR(inode->i_mode)) {  in erofs_fc_fill_super()
727 			  sbi->root_nid, inode->i_mode);  in erofs_fc_fill_super()
729 		return -EINVAL;  in erofs_fc_fill_super()
731 	sb->s_root = d_make_root(inode);  in erofs_fc_fill_super()
732 	if (!sb->s_root)  in erofs_fc_fill_super()
733 		return -ENOMEM;  in erofs_fc_fill_super()
745 	sbi->dir_ra_bytes = EROFS_DIR_RA_BYTES;  in erofs_fc_fill_super()
746 	erofs_info(sb, "mounted with root inode @ nid %llu.", sbi->root_nid);  in erofs_fc_fill_super()
752 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_get_tree()
755 	if (IS_ENABLED(CONFIG_EROFS_FS_ONDEMAND) && sbi->fsid)  in erofs_fc_get_tree()
762 	if (ret == -ENOTBLK) {  in erofs_fc_get_tree()
765 		if (!fc->source)  in erofs_fc_get_tree()
767 		file = filp_open(fc->source, O_RDONLY | O_LARGEFILE, 0);  in erofs_fc_get_tree()
770 		sbi->dif0.file = file;  in erofs_fc_get_tree()
772 		if (S_ISREG(file_inode(sbi->dif0.file)->i_mode) &&  in erofs_fc_get_tree()
773 		    sbi->dif0.file->f_mapping->a_ops->read_folio)  in erofs_fc_get_tree()
782 	struct super_block *sb = fc->root->d_sb;  in erofs_fc_reconfigure()
784 	struct erofs_sb_info *new_sbi = fc->s_fs_info;  in erofs_fc_reconfigure()
788 	if (new_sbi->fsid || new_sbi->domain_id)  in erofs_fc_reconfigure()
791 	if (test_opt(&new_sbi->opt, POSIX_ACL))  in erofs_fc_reconfigure()
792 		fc->sb_flags |= SB_POSIXACL;  in erofs_fc_reconfigure()
794 		fc->sb_flags &= ~SB_POSIXACL;  in erofs_fc_reconfigure()
796 	sbi->opt = new_sbi->opt;  in erofs_fc_reconfigure()
798 	fc->sb_flags |= SB_RDONLY;  in erofs_fc_reconfigure()
806 	fs_put_dax(dif->dax_dev, NULL);  in erofs_release_device_info()
807 	if (dif->file)  in erofs_release_device_info()
808 		fput(dif->file);  in erofs_release_device_info()
809 	erofs_fscache_unregister_cookie(dif->fscache);  in erofs_release_device_info()
810 	dif->fscache = NULL;  in erofs_release_device_info()
811 	kfree(dif->path);  in erofs_release_device_info()
820 	idr_for_each(&devs->tree, &erofs_release_device_info, NULL);  in erofs_free_dev_context()
821 	idr_destroy(&devs->tree);  in erofs_free_dev_context()
827 	erofs_free_dev_context(sbi->devs);  in erofs_sb_free()
828 	kfree(sbi->fsid);  in erofs_sb_free()
829 	kfree(sbi->domain_id);  in erofs_sb_free()
830 	if (sbi->dif0.file)  in erofs_sb_free()
831 		fput(sbi->dif0.file);  in erofs_sb_free()
832 	kfree(sbi->volume_name);  in erofs_sb_free()
838 	struct erofs_sb_info *sbi = fc->s_fs_info;  in erofs_fc_free()
857 		return -ENOMEM;  in erofs_init_fs_context()
859 	sbi->devs = kzalloc(sizeof(struct erofs_dev_context), GFP_KERNEL);  in erofs_init_fs_context()
860 	if (!sbi->devs) {  in erofs_init_fs_context()
862 		return -ENOMEM;  in erofs_init_fs_context()
864 	fc->s_fs_info = sbi;  in erofs_init_fs_context()
866 	idr_init(&sbi->devs->tree);  in erofs_init_fs_context()
867 	init_rwsem(&sbi->devs->rwsem);  in erofs_init_fs_context()
869 	fc->ops = &erofs_context_ops;  in erofs_init_fs_context()
875 	iput(sbi->packed_inode);  in erofs_drop_internal_inodes()
876 	sbi->packed_inode = NULL;  in erofs_drop_internal_inodes()
877 	iput(sbi->metabox_inode);  in erofs_drop_internal_inodes()
878 	sbi->metabox_inode = NULL;  in erofs_drop_internal_inodes()
880 	iput(sbi->managed_cache);  in erofs_drop_internal_inodes()
881 	sbi->managed_cache = NULL;  in erofs_drop_internal_inodes()
889 	if ((IS_ENABLED(CONFIG_EROFS_FS_ONDEMAND) && sbi->fsid) ||  in erofs_kill_sb()
890 	    sbi->dif0.file)  in erofs_kill_sb()
895 	fs_put_dax(sbi->dif0.dax_dev, NULL);  in erofs_kill_sb()
898 	sb->s_fs_info = NULL;  in erofs_kill_sb()
909 	erofs_free_dev_context(sbi->devs);  in erofs_put_super()
910 	sbi->devs = NULL;  in erofs_put_super()
934 		return -ENOMEM;  in erofs_module_init()
980 	struct super_block *sb = dentry->d_sb;  in erofs_statfs()
983 	buf->f_type = sb->s_magic;  in erofs_statfs()
984 	buf->f_bsize = sb->s_blocksize;  in erofs_statfs()
985 	buf->f_blocks = sbi->total_blocks;  in erofs_statfs()
986 	buf->f_bfree = buf->f_bavail = 0;  in erofs_statfs()
987 	buf->f_files = ULLONG_MAX;  in erofs_statfs()
988 	buf->f_ffree = ULLONG_MAX - sbi->inos;  in erofs_statfs()
989 	buf->f_namelen = EROFS_NAME_LEN;  in erofs_statfs()
991 	if (uuid_is_null(&sb->s_uuid))  in erofs_statfs()
992 		buf->f_fsid = u64_to_fsid(!sb->s_bdev ? 0 :  in erofs_statfs()
993 				huge_encode_dev(sb->s_bdev->bd_dev));  in erofs_statfs()
995 		buf->f_fsid = uuid_to_fsid(sb->s_uuid.b);  in erofs_statfs()
1001 	struct erofs_sb_info *sbi = EROFS_SB(root->d_sb);  in erofs_show_options()
1002 	struct erofs_mount_opts *opt = &sbi->opt;  in erofs_show_options()
1011 			  erofs_param_cache_strategy[opt->cache_strategy].name);  in erofs_show_options()
1019 	if (sbi->fsid)  in erofs_show_options()
1020 		seq_printf(seq, ",fsid=%s", sbi->fsid);  in erofs_show_options()
1021 	if (sbi->domain_id)  in erofs_show_options()
1022 		seq_printf(seq, ",domain_id=%s", sbi->domain_id);  in erofs_show_options()
1024 	if (sbi->dif0.fsoff)  in erofs_show_options()
1025 		seq_printf(seq, ",fsoffset=%llu", sbi->dif0.fsoff);  in erofs_show_options()
1036 	truncate_inode_pages_final(&inode->i_data);  in erofs_evict_inode()