fs/coda/file.c

File Facts

System

Linux kernel

Corpus path

fs/coda/file.c

Extension

.c

Size

8849 bytes

Lines

332

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.
• 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/refcount.h
• linux/types.h
• linux/kernel.h
• linux/time.h
• linux/file.h
• linux/fs.h
• linux/pagemap.h
• linux/stat.h
• linux/cred.h
• linux/errno.h
• linux/spinlock.h
• linux/string.h
• linux/slab.h
• linux/uaccess.h
• linux/uio.h
• linux/splice.h
• linux/coda.h
• coda_psdev.h
• coda_linux.h
• coda_int.h

Detected Declarations

• struct coda_vm_ops
• function coda_file_read_iter
• function coda_file_write_iter
• function coda_file_splice_read
• function coda_vm_open
• function coda_vm_close
• function coda_file_mmap
• function coda_open
• function coda_release
• function coda_fsync

Annotated Snippet

const struct file_operations coda_file_operations = {
	.llseek		= generic_file_llseek,
	.read_iter	= coda_file_read_iter,
	.write_iter	= coda_file_write_iter,
	.mmap		= coda_file_mmap,
	.open		= coda_open,
	.release	= coda_release,
	.fsync		= coda_fsync,
	.splice_read	= coda_file_splice_read,
};

Annotation

• Immediate include surface: `linux/refcount.h`, `linux/types.h`, `linux/kernel.h`, `linux/time.h`, `linux/file.h`, `linux/fs.h`, `linux/pagemap.h`, `linux/stat.h`.
• Detected declarations: `struct coda_vm_ops`, `function coda_file_read_iter`, `function coda_file_write_iter`, `function coda_file_splice_read`, `function coda_vm_open`, `function coda_vm_close`, `function coda_file_mmap`, `function coda_open`, `function coda_release`, `function coda_fsync`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: pattern 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.