fs/xfs/xfs_icache.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef XFS_SYNC_H
#define XFS_SYNC_H 1

struct xfs_mount;
struct xfs_perag;

struct xfs_icwalk {
	__u32		icw_flags;
	kuid_t		icw_uid;
	kgid_t		icw_gid;
	prid_t		icw_prid;
	__u64		icw_min_file_size;
	long		icw_scan_limit;
};

/* Flags that reflect xfs_fs_eofblocks functionality. */
#define XFS_ICWALK_FLAG_SYNC		(1U << 0) /* sync/wait mode scan */
#define XFS_ICWALK_FLAG_UID		(1U << 1) /* filter by uid */
#define XFS_ICWALK_FLAG_GID		(1U << 2) /* filter by gid */
#define XFS_ICWALK_FLAG_PRID		(1U << 3) /* filter by project id */
#define XFS_ICWALK_FLAG_MINFILESIZE	(1U << 4) /* filter by min file size */

#define XFS_ICWALK_FLAGS_VALID		(XFS_ICWALK_FLAG_SYNC | \
					 XFS_ICWALK_FLAG_UID | \
					 XFS_ICWALK_FLAG_GID | \
					 XFS_ICWALK_FLAG_PRID | \
					 XFS_ICWALK_FLAG_MINFILESIZE)

/*
 * Flags for xfs_iget()
 */
#define XFS_IGET_CREATE		(1U << 0)
#define XFS_IGET_UNTRUSTED	(1U << 1)
#define XFS_IGET_DONTCACHE	(1U << 2)
/* don't read from disk or reinit */
#define XFS_IGET_INCORE		(1U << 3)
/* Return -EAGAIN immediately if the inode is unavailable. */
#define XFS_IGET_NORETRY	(1U << 4)

int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
	     uint flags, uint lock_flags, xfs_inode_t **ipp);

/* recovery needs direct inode allocation capability */
struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
void xfs_inode_free(struct xfs_inode *ip);

void xfs_reclaim_worker(struct work_struct *work);

void xfs_reclaim_inodes(struct xfs_mount *mp);
long xfs_reclaim_inodes_count(struct xfs_mount *mp);
long xfs_reclaim_inodes_nr(struct xfs_mount *mp, unsigned long nr_to_scan);

void xfs_inode_mark_reclaimable(struct xfs_inode *ip);

int xfs_blockgc_free_dquots(struct xfs_mount *mp, struct xfs_dquot *udqp,
		struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
		unsigned int iwalk_flags);
int xfs_blockgc_free_quota(struct xfs_inode *ip, unsigned int iwalk_flags);
int xfs_blockgc_free_space(struct xfs_mount *mp, struct xfs_icwalk *icm);
void xfs_blockgc_flush_all(struct xfs_mount *mp);

void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);

void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip);
void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip);

void xfs_blockgc_worker(struct work_struct *work);

int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp,
				  xfs_ino_t ino, bool *inuse);

void xfs_blockgc_stop(struct xfs_mount *mp);
void xfs_blockgc_start(struct xfs_mount *mp);

void xfs_inodegc_worker(struct work_struct *work);
void xfs_inodegc_push(struct xfs_mount *mp);
void xfs_inodegc_flush(struct xfs_mount *mp);
void xfs_inodegc_stop(struct xfs_mount *mp);
void xfs_inodegc_start(struct xfs_mount *mp);
void xfs_inodegc_cpu_dead(struct xfs_mount *mp, unsigned int cpu);
int xfs_inodegc_register_shrinker(struct xfs_mount *mp);

#endif