fs/xfs/xfs_zone_alloc.h

Source file repositories/reference/linux-study-clean/fs/xfs/xfs_zone_alloc.h

File Facts

System
Linux kernel
Corpus path
fs/xfs/xfs_zone_alloc.h
Extension
.h
Size
2258 bytes
Lines
76
Domain
Core OS
Bucket
VFS And Filesystem Core
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct xfs_zone_alloc_ctx {
	struct xfs_open_zone	*open_zone;
	xfs_filblks_t		reserved_blocks;
};

/*
 * Grab any available space, even if it is less than what the caller asked for.
 */
#define XFS_ZR_GREEDY		(1U << 0)
/*
 * Only grab instantly available space, don't wait or GC.
 */
#define XFS_ZR_NOWAIT		(1U << 1)
/*
 * Dip into the reserved pool.
 */
#define XFS_ZR_RESERVED		(1U << 2)

int xfs_zoned_space_reserve(struct xfs_mount *mp, xfs_filblks_t count_fsb,
		unsigned int flags, struct xfs_zone_alloc_ctx *ac);
void xfs_zoned_space_unreserve(struct xfs_mount *mp,
		struct xfs_zone_alloc_ctx *ac);
void xfs_zoned_add_available(struct xfs_mount *mp, xfs_filblks_t count_fsb);

void xfs_zone_alloc_and_submit(struct iomap_ioend *ioend,
		struct xfs_open_zone **oz);
int xfs_zone_free_blocks(struct xfs_trans *tp, struct xfs_rtgroup *rtg,
		xfs_fsblock_t fsbno, xfs_filblks_t len);
int xfs_zoned_end_io(struct xfs_inode *ip, xfs_off_t offset, xfs_off_t count,
		xfs_daddr_t daddr, struct xfs_open_zone *oz,
		xfs_fsblock_t old_startblock);
void xfs_open_zone_put(struct xfs_open_zone *oz);

void xfs_zoned_wake_all(struct xfs_mount *mp);
bool xfs_zone_rgbno_is_valid(struct xfs_rtgroup *rtg, xfs_rgnumber_t rgbno);
void xfs_mark_rtg_boundary(struct iomap_ioend *ioend);

void xfs_zone_mark_free(struct xfs_rtgroup *rtg);
uint64_t xfs_zoned_default_resblks(struct xfs_mount *mp,
		enum xfs_free_counter ctr);
void xfs_zoned_show_stats(struct seq_file *m, struct xfs_mount *mp);

#ifdef CONFIG_XFS_RT
int xfs_mount_zones(struct xfs_mount *mp);
void xfs_unmount_zones(struct xfs_mount *mp);
void xfs_zone_gc_start(struct xfs_mount *mp);
void xfs_zone_gc_stop(struct xfs_mount *mp);
void xfs_zone_gc_wakeup(struct xfs_mount *mp);
#else
static inline int xfs_mount_zones(struct xfs_mount *mp)
{
	return -EIO;
}
static inline void xfs_unmount_zones(struct xfs_mount *mp)
{
}
static inline void xfs_zone_gc_start(struct xfs_mount *mp)
{
}
static inline void xfs_zone_gc_stop(struct xfs_mount *mp)
{
}
static inline void xfs_zone_gc_wakeup(struct xfs_mount *mp)
{
}
#endif /* CONFIG_XFS_RT */

#endif /* _XFS_ZONE_ALLOC_H */

Annotation

Implementation Notes