fs/hpfs/file.c

File Facts

System

Linux kernel

Corpus path

fs/hpfs/file.c

Extension

.c

Size

6998 bytes

Lines

275

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• hpfs_fn.h
• linux/mpage.h
• linux/iomap.h
• linux/fiemap.h

Detected Declarations

• function Patocka
• function hpfs_file_fsync
• function hpfs_bmap
• function hpfs_truncate
• function hpfs_get_block
• function hpfs_iomap_begin
• function hpfs_read_folio
• function hpfs_readahead
• function hpfs_writepages
• function hpfs_write_failed
• function hpfs_write_begin
• function hpfs_write_end
• function _hpfs_bmap
• function hpfs_fiemap

Annotated Snippet

const struct file_operations hpfs_file_ops =
{
	.llseek		= generic_file_llseek,
	.read_iter	= generic_file_read_iter,
	.write_iter	= generic_file_write_iter,
	.mmap_prepare	= generic_file_mmap_prepare,
	.release	= hpfs_file_release,
	.fsync		= hpfs_file_fsync,
	.splice_read	= filemap_splice_read,
	.unlocked_ioctl	= hpfs_ioctl,
	.compat_ioctl	= compat_ptr_ioctl,
};

const struct inode_operations hpfs_file_iops =
{
	.setattr	= hpfs_setattr,
	.fiemap		= hpfs_fiemap,
};

Annotation

• Immediate include surface: `hpfs_fn.h`, `linux/mpage.h`, `linux/iomap.h`, `linux/fiemap.h`.
• Detected declarations: `function Patocka`, `function hpfs_file_fsync`, `function hpfs_bmap`, `function hpfs_truncate`, `function hpfs_get_block`, `function hpfs_iomap_begin`, `function hpfs_read_folio`, `function hpfs_readahead`, `function hpfs_writepages`, `function hpfs_write_failed`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: pattern 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.