fs/gfs2/inode.h

File Facts

System

Linux kernel

Corpus path

fs/gfs2/inode.h

Extension

.h

Size

3971 bytes

Lines

136

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

• linux/fs.h
• linux/buffer_head.h
• linux/mm.h
• util.h

Detected Declarations

• function gfs2_is_stuffed
• function gfs2_is_jdata
• function gfs2_is_ordered
• function gfs2_is_writeback
• function gfs2_is_dir
• function gfs2_set_inode_blocks
• function gfs2_get_inode_blocks
• function gfs2_add_inode_blocks
• function gfs2_check_inum
• function gfs2_inum_out
• function gfs2_check_internal_file_size
• function gfs2_localflocks
• function gfs2_localflocks

Annotated Snippet

extern const struct file_operations gfs2_file_fops_nolock;
extern const struct file_operations gfs2_dir_fops_nolock;

int gfs2_fileattr_get(struct dentry *dentry, struct file_kattr *fa);
int gfs2_fileattr_set(struct mnt_idmap *idmap,
		      struct dentry *dentry, struct file_kattr *fa);
void gfs2_set_inode_flags(struct inode *inode);

#ifdef CONFIG_GFS2_FS_LOCKING_DLM
extern const struct file_operations gfs2_file_fops;
extern const struct file_operations gfs2_dir_fops;

static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
{
	return sdp->sd_args.ar_localflocks;
}
#else /* Single node only */
#define gfs2_file_fops gfs2_file_fops_nolock
#define gfs2_dir_fops gfs2_dir_fops_nolock

static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
{
	return 1;
}
#endif /* CONFIG_GFS2_FS_LOCKING_DLM */

#endif /* __INODE_DOT_H__ */

Annotation

• Immediate include surface: `linux/fs.h`, `linux/buffer_head.h`, `linux/mm.h`, `util.h`.
• Detected declarations: `function gfs2_is_stuffed`, `function gfs2_is_jdata`, `function gfs2_is_ordered`, `function gfs2_is_writeback`, `function gfs2_is_dir`, `function gfs2_set_inode_blocks`, `function gfs2_get_inode_blocks`, `function gfs2_add_inode_blocks`, `function gfs2_check_inum`, `function gfs2_inum_out`.
• 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.