1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2000-2006 Silicon Graphics, Inc.
4  * All Rights Reserved.
5  */
6 #ifndef XFS_SYNC_H
7 #define XFS_SYNC_H 1
8 
9 struct xfs_mount;
10 struct xfs_perag;
11 
12 struct xfs_icwalk {
13 	__u32		icw_flags;
14 	kuid_t		icw_uid;
15 	kgid_t		icw_gid;
16 	prid_t		icw_prid;
17 	__u64		icw_min_file_size;
18 	long		icw_scan_limit;
19 };
20 
21 /* Flags that reflect xfs_fs_eofblocks functionality. */
22 #define XFS_ICWALK_FLAG_SYNC		(1U << 0) /* sync/wait mode scan */
23 #define XFS_ICWALK_FLAG_UID		(1U << 1) /* filter by uid */
24 #define XFS_ICWALK_FLAG_GID		(1U << 2) /* filter by gid */
25 #define XFS_ICWALK_FLAG_PRID		(1U << 3) /* filter by project id */
26 #define XFS_ICWALK_FLAG_MINFILESIZE	(1U << 4) /* filter by min file size */
27 
28 #define XFS_ICWALK_FLAGS_VALID		(XFS_ICWALK_FLAG_SYNC | \
29 					 XFS_ICWALK_FLAG_UID | \
30 					 XFS_ICWALK_FLAG_GID | \
31 					 XFS_ICWALK_FLAG_PRID | \
32 					 XFS_ICWALK_FLAG_MINFILESIZE)
33 
34 /*
35  * Flags for xfs_iget()
36  */
37 #define XFS_IGET_CREATE		(1U << 0)
38 #define XFS_IGET_UNTRUSTED	(1U << 1)
39 #define XFS_IGET_DONTCACHE	(1U << 2)
40 /* don't read from disk or reinit */
41 #define XFS_IGET_INCORE		(1U << 3)
42 /* Return -EAGAIN immediately if the inode is unavailable. */
43 #define XFS_IGET_NORETRY	(1U << 4)
44 
45 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
46 	     uint flags, uint lock_flags, xfs_inode_t **ipp);
47 
48 /* recovery needs direct inode allocation capability */
49 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
50 void xfs_inode_free(struct xfs_inode *ip);
51 
52 void xfs_reclaim_worker(struct work_struct *work);
53 
54 void xfs_reclaim_inodes(struct xfs_mount *mp);
55 long xfs_reclaim_inodes_count(struct xfs_mount *mp);
56 long xfs_reclaim_inodes_nr(struct xfs_mount *mp, unsigned long nr_to_scan);
57 
58 void xfs_inode_mark_reclaimable(struct xfs_inode *ip);
59 
60 int xfs_blockgc_free_dquots(struct xfs_mount *mp, struct xfs_dquot *udqp,
61 		struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
62 		unsigned int iwalk_flags);
63 int xfs_blockgc_free_quota(struct xfs_inode *ip, unsigned int iwalk_flags);
64 int xfs_blockgc_free_space(struct xfs_mount *mp, struct xfs_icwalk *icm);
65 int xfs_blockgc_flush_all(struct xfs_mount *mp);
66 
67 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
68 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
69 
70 void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip);
71 void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip);
72 
73 void xfs_blockgc_worker(struct work_struct *work);
74 void xfs_blockgc_stop(struct xfs_mount *mp);
75 void xfs_blockgc_start(struct xfs_mount *mp);
76 
77 void xfs_inodegc_worker(struct work_struct *work);
78 void xfs_inodegc_push(struct xfs_mount *mp);
79 int xfs_inodegc_flush(struct xfs_mount *mp);
80 void xfs_inodegc_stop(struct xfs_mount *mp);
81 void xfs_inodegc_start(struct xfs_mount *mp);
82 int xfs_inodegc_register_shrinker(struct xfs_mount *mp);
83 
84 #endif
85