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_eofblocks {
	__u32		eof_flags;
	kuid_t		eof_uid;
	kgid_t		eof_gid;
	prid_t		eof_prid;
	__u64		eof_min_file_size;
};

/*
 * tags for inode radix tree
 */
#define XFS_ICI_NO_TAG		(-1)	/* special flag for an untagged lookup
					   in xfs_inode_walk */
#define XFS_ICI_RECLAIM_TAG	0	/* inode is to be reclaimed */
#define XFS_ICI_EOFBLOCKS_TAG	1	/* inode has blocks beyond EOF */
#define XFS_ICI_COWBLOCKS_TAG	2	/* inode can have cow blocks to gc */

/*
 * Flags for xfs_iget()
 */
#define XFS_IGET_CREATE		0x1
#define XFS_IGET_UNTRUSTED	0x2
#define XFS_IGET_DONTCACHE	0x4
#define XFS_IGET_INCORE		0x8	/* don't read from disk or reinit */

/*
 * flags for AG inode iterator
 */
#define XFS_INODE_WALK_INEW_WAIT	0x1	/* wait on new inodes */

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);
int xfs_reclaim_inodes_count(struct xfs_mount *mp);
long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);

void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);

void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip);
void xfs_eofblocks_worker(struct work_struct *);
void xfs_queue_eofblocks(struct xfs_mount *);

void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip);
void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip);
int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *);
int xfs_inode_free_quota_cowblocks(struct xfs_inode *ip);
void xfs_cowblocks_worker(struct work_struct *);
void xfs_queue_cowblocks(struct xfs_mount *);

int xfs_inode_walk(struct xfs_mount *mp, int iter_flags,
	int (*execute)(struct xfs_inode *ip, void *args),
	void *args, int tag);

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

void xfs_stop_block_reaping(struct xfs_mount *mp);
void xfs_start_block_reaping(struct xfs_mount *mp);

#endif