Documentation/admin-guide/sysctl/vm.rst

File Facts

System

Linux kernel

Corpus path

Documentation/admin-guide/sysctl/vm.rst

Extension

.rst

Size

42424 bytes

Lines

1154

Domain

Support Tooling And Documentation

Bucket

Documentation

Inferred role

Support Tooling And Documentation: documentation

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

===============================
Documentation for /proc/sys/vm/
===============================

kernel version 2.6.29

Copyright (c) 1998, 1999,  Rik van Riel <riel@nl.linux.org>

Copyright (c) 2008         Peter W. Morreale <pmorreale@novell.com>

For general info and legal blurb, please look in index.rst.

------------------------------------------------------------------------------

This file contains the documentation for the sysctl files in
/proc/sys/vm and is valid for Linux kernel version 2.6.29.

The files in this directory can be used to tune the operation
of the virtual memory (VM) subsystem of the Linux kernel and
the writeout of dirty data to disk.

Default values and initialization routines for most of these
files can be found in mm/swap.c.

Currently, these files are in /proc/sys/vm:

- admin_reserve_kbytes
- compact_memory
- compaction_proactiveness
- compact_unevictable_allowed
- defrag_mode
- dirty_background_bytes
- dirty_background_ratio
- dirty_bytes
- dirty_expire_centisecs
- dirty_ratio
- dirtytime_expire_seconds
- dirty_writeback_centisecs
- drop_caches
- enable_soft_offline
- extfrag_threshold
- highmem_is_dirtyable
- hugetlb_shm_group
- legacy_va_layout
- lowmem_reserve_ratio
- max_map_count
- mem_profiling         (only if CONFIG_MEM_ALLOC_PROFILING=y)
- memory_failure_early_kill
- memory_failure_recovery
- min_free_kbytes
- min_slab_ratio
- min_unmapped_ratio
- mmap_min_addr
- mmap_rnd_bits
- mmap_rnd_compat_bits
- movable_gigantic_pages
- nr_hugepages
- nr_hugepages_mempolicy
- nr_overcommit_hugepages
- nr_trim_pages         (only if CONFIG_MMU=n)
- numa_zonelist_order
- oom_dump_tasks
- oom_kill_allocating_task
- overcommit_kbytes
- overcommit_memory
- overcommit_ratio
- page-cluster
- page_lock_unfairness
- panic_on_oom
- percpu_pagelist_high_fraction

Annotation

• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.

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.