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// 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;
int nr_to_scan;
};
/*
* tags for inode radix tree
*/
#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
/* Inode has speculative preallocations (posteof or cow) to clean. */
#define XFS_ICI_BLOCKGC_TAG 1
/* Inode can be inactivated. */
#define XFS_ICI_INODEGC_TAG 2
/*
* 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 */
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_destroy(struct xfs_inode *ip, bool need_inactive);
int xfs_blockgc_free_dquots(struct xfs_mount *mp, struct xfs_dquot *udqp,
struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
unsigned int eof_flags);
int xfs_blockgc_free_quota(struct xfs_inode *ip, unsigned int eof_flags);
int xfs_blockgc_free_space(struct xfs_mount *mp, struct xfs_eofblocks *eofb);
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_inew_wait(struct xfs_inode *ip);
void xfs_inodegc_worker(struct work_struct *work);
void xfs_inodegc_flush(struct xfs_mount *mp);
void xfs_inodegc_flush_poll(struct xfs_mount *mp);
void xfs_inodegc_stop(struct xfs_mount *mp);
void xfs_inodegc_start(struct xfs_mount *mp);
int xfs_inodegc_free_space(struct xfs_mount *mp, struct xfs_eofblocks *eofb);
/*
* Process all pending inode inactivations immediately (sort of) so that a
* resource usage report will be mostly accurate with regards to files that
* have been unlinked recently.
*
* It isn't practical to maintain a count of the resources used by unlinked
* inodes to adjust the values reported by this function. Resources that are
* shared (e.g. reflink) when an inode is queued for inactivation cannot be
* counted towards the adjustment, and cross referencing data extents with the
* refcount btree is the only way to decide if a resource is shared. Worse,
* unsharing of any data blocks in the system requires either a second
* consultation with the refcount btree, or training users to deal with the
* free space counts possibly fluctuating upwards as inactivations occur.
*
* Hence we guard the inactivation flush with a ratelimiter so that the counts
* are not way out of whack while ignoring workloads that hammer us with statfs
* calls.
*/
static inline void
xfs_inodegc_summary_flush(
struct xfs_mount *mp)
{
if (__ratelimit(&mp->m_inodegc_ratelimit))
xfs_inodegc_flush(mp);
}
#endif
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