fs/erofs/super.c

File Facts

System

Linux kernel

Corpus path

fs/erofs/super.c

Extension

.c

Size

30242 bytes

Lines

1139

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/statfs.h
• linux/seq_file.h
• linux/crc32c.h
• linux/fs_context.h
• linux/fs_parser.h
• linux/exportfs.h
• linux/backing-dev.h
• linux/pseudo_fs.h
• xattr.h
• trace/events/erofs.h

Detected Declarations

• function _erofs_printk
• function erofs_superblock_csum_verify
• function erofs_inode_init_once
• function erofs_free_inode
• function erofs_init_device
• function erofs_scan_devices
• function idr_for_each_entry
• function erofs_read_superblock
• function erofs_sb_has_lz4_0padding
• function erofs_default_options
• function erofs_fc_set_dax_mode
• function erofs_fc_parse_param
• function erofs_encode_fh
• function erofs_set_sysfs_name
• function erofs_fc_fill_super
• function contexts
• function erofs_fc_get_tree
• function erofs_fc_reconfigure
• function erofs_release_device_info
• function erofs_free_dev_context
• function erofs_sb_free
• function erofs_fc_free
• function erofs_init_fs_context
• function erofs_drop_internal_inodes
• function erofs_kill_sb
• function erofs_put_super
• function erofs_free_anon_inode
• function erofs_anon_init_fs_context
• function erofs_module_init
• function erofs_module_exit
• function erofs_statfs
• function erofs_show_options
• function erofs_evict_inode
• module init erofs_module_init

Annotated Snippet

module_init(erofs_module_init);
module_exit(erofs_module_exit);

MODULE_DESCRIPTION("Enhanced ROM File System");
MODULE_AUTHOR("Gao Xiang, Chao Yu, Miao Xie, CONSUMER BG, HUAWEI Inc.");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/statfs.h`, `linux/seq_file.h`, `linux/crc32c.h`, `linux/fs_context.h`, `linux/fs_parser.h`, `linux/exportfs.h`, `linux/backing-dev.h`, `linux/pseudo_fs.h`.
• Detected declarations: `function _erofs_printk`, `function erofs_superblock_csum_verify`, `function erofs_inode_init_once`, `function erofs_free_inode`, `function erofs_init_device`, `function erofs_scan_devices`, `function idr_for_each_entry`, `function erofs_read_superblock`, `function erofs_sb_has_lz4_0padding`, `function erofs_default_options`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: integration implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.