fs/xfs/xfs_super.c

File Facts

System

Linux kernel

Corpus path

fs/xfs/xfs_super.c

Extension

.c

Size

71020 bytes

Lines

2721

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

• xfs_platform.h
• xfs_shared.h
• xfs_format.h
• xfs_log_format.h
• xfs_trans_resv.h
• xfs_sb.h
• xfs_mount.h
• xfs_inode.h
• xfs_btree.h
• xfs_bmap.h
• xfs_alloc.h
• xfs_fsops.h
• xfs_trans.h
• xfs_buf_item.h
• xfs_log.h
• xfs_log_priv.h
• xfs_dir2.h
• xfs_extfree_item.h
• xfs_mru_cache.h
• xfs_inode_item.h
• xfs_icache.h
• xfs_trace.h
• xfs_icreate_item.h
• xfs_filestream.h
• xfs_quota.h
• xfs_sysfs.h
• xfs_ondisk.h
• xfs_rmap_item.h
• xfs_refcount_item.h
• xfs_bmap_item.h
• xfs_reflink.h
• xfs_pwork.h

Detected Declarations

• struct proc_xfs_info
• enum xfs_dax_mode
• function xfs_mount_set_dax_mode
• function xfs_fs_show_options
• function xfs_set_inode_alloc_perag
• function xfs_set_inode_alloc
• function xfs_setup_dax_always
• function xfs_blkdev_get
• function xfs_shutdown_devices
• function get_sb_bdev
• function xfs_setup_devices
• function xfs_init_mount_workqueues
• function xfs_destroy_mount_workqueues
• function xfs_flush_inodes_worker
• function xfs_flush_inodes
• function xfs_fs_alloc_inode
• function xfs_fs_destroy_inode
• function xfs_fs_inode_init_once
• function xfs_iget_cache_hit
• function xfs_fs_evict_inode
• function xfs_mount_free
• function xfs_fs_sync_fs
• function xfs_internal_log_size
• function xfs_statfs_data
• function stat
• function xfs_statfs_inodes
• function xfs_fs_statfs
• function xfs_save_resvblks
• function xfs_restore_resvblks
• function xfs_fs_freeze
• function xfs_fs_sync_fs
• function xfs_fs_unfreeze
• function xfs_finish_flags
• function xfs_init_percpu_counters
• function xfs_reinit_percpu_counters
• function xfs_destroy_percpu_counters
• function xfs_inodegc_init_percpu
• function for_each_possible_cpu
• function xfs_inodegc_free_percpu
• function xfs_fs_put_super
• function xfs_fs_nr_cached_objects
• function xfs_fs_free_cached_objects
• function xfs_fs_shutdown
• function xfs_fs_show_stats
• function xfs_fs_report_error
• function suffix_kstrtoint
• function suffix_kstrtoull
• function xfs_fs_warn_deprecated

Annotated Snippet

module_init(init_xfs_fs);
module_exit(exit_xfs_fs);

MODULE_AUTHOR("Silicon Graphics, Inc.");
MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `xfs_platform.h`, `xfs_shared.h`, `xfs_format.h`, `xfs_log_format.h`, `xfs_trans_resv.h`, `xfs_sb.h`, `xfs_mount.h`, `xfs_inode.h`.
• Detected declarations: `struct proc_xfs_info`, `enum xfs_dax_mode`, `function xfs_mount_set_dax_mode`, `function xfs_fs_show_options`, `function xfs_set_inode_alloc_perag`, `function xfs_set_inode_alloc`, `function xfs_setup_dax_always`, `function xfs_blkdev_get`, `function xfs_shutdown_devices`, `function get_sb_bdev`.
• 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.