fs/fat/inode.c
Source file repositories/reference/linux-study-clean/fs/fat/inode.c
File Facts
- System
- Linux kernel
- Corpus path
fs/fat/inode.c- Extension
.c- Size
- 52560 bytes
- Lines
- 1996
- 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.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- 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/module.hlinux/pagemap.hlinux/mpage.hlinux/vfs.hlinux/seq_file.hlinux/uio.hlinux/blkdev.hlinux/backing-dev.hlinux/unaligned.hlinux/random.hlinux/iversion.hlinux/fs_struct.hfat.h
Detected Declarations
struct fat_bios_param_blockfunction fat_add_clusterfunction __fat_get_blockfunction fat_get_blockfunction fat_writepagesfunction fat_read_foliofunction fat_readaheadfunction fat_write_failedfunction fat_write_beginfunction fat_write_endfunction fat_direct_IOfunction fat_get_block_bmapfunction _fat_bmapfunction fat_block_truncate_pagefunction fat_hash_initfunction fat_hashfunction dir_hash_initfunction fat_attachfunction fat_detachfunction is_execfunction fat_calc_dir_sizefunction fat_validate_dirfunction MSDOS_Ifunction fat_fill_inodefunction fat_lock_build_inodefunction fat_unlock_build_inodefunction fat_free_eofblocksfunction fat_evict_inodefunction fat_set_statefunction fat_reset_iocharsetfunction delayed_freefunction fat_put_superfunction fat_free_inodefunction init_oncefunction fat_init_inodecachefunction fat_destroy_inodecachefunction fat_reconfigurefunction fat_statfsfunction __fat_write_inodefunction fat_write_inodefunction fat_sync_inodefunction fat_show_optionsfunction fat_parse_paramfunction fat_read_rootfunction calc_fat_clustersfunction fat_bpb_is_zerofunction fat_read_bpbfunction fat_read_static_bpb
Annotated Snippet
module_init(init_fat_fs)
module_exit(exit_fat_fs)
MODULE_DESCRIPTION("Core FAT filesystem support");
MODULE_LICENSE("GPL");Annotation
- Immediate include surface: `linux/module.h`, `linux/pagemap.h`, `linux/mpage.h`, `linux/vfs.h`, `linux/seq_file.h`, `linux/uio.h`, `linux/blkdev.h`, `linux/backing-dev.h`.
- Detected declarations: `struct fat_bios_param_block`, `function fat_add_cluster`, `function __fat_get_block`, `function fat_get_block`, `function fat_writepages`, `function fat_read_folio`, `function fat_readahead`, `function fat_write_failed`, `function fat_write_begin`, `function fat_write_end`.
- Atlas domain: Core OS / VFS And Filesystem Core.
- Implementation status: integration implementation candidate.
- Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
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.