Release 4.18 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;
};


#define SYNC_WAIT		0x0001	
/* wait for i/o to complete */

#define SYNC_TRYLOCK		0x0002  
/* only try to lock inodes */

/*
 * tags for inode radix tree
 */

#define XFS_ICI_NO_TAG		(-1)	
/* special flag for an untagged lookup
                                           in xfs_inode_ag_iterator */

#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_AGITER_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);

int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
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_ag_iterator(struct xfs_mount *mp,
	int (*execute)(struct xfs_inode *ip, int flags, void *args),
	int flags, void *args);
int xfs_inode_ag_iterator_flags(struct xfs_mount *mp,
	int (*execute)(struct xfs_inode *ip, int flags, void *args),
	int flags, void *args, int iter_flags);
int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
	int (*execute)(struct xfs_inode *ip, int flags, void *args),
	int flags, void *args, int tag);


static inline int

xfs_fs_eofblocks_from_user(
	struct xfs_fs_eofblocks		*src,
	struct xfs_eofblocks		*dst)
{
	if (src->eof_version != XFS_EOFBLOCKS_VERSION)
		return -EINVAL;

	if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
		return -EINVAL;

	if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
	    memchr_inv(src->pad64, 0, sizeof(src->pad64)))
		return -EINVAL;

	dst->eof_flags = src->eof_flags;
	dst->eof_prid = src->eof_prid;
	dst->eof_min_file_size = src->eof_min_file_size;

	dst->eof_uid = INVALID_UID;
	if (src->eof_flags & XFS_EOF_FLAGS_UID) {
		dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
		if (!uid_valid(dst->eof_uid))
			return -EINVAL;
	}

	dst->eof_gid = INVALID_GID;
	if (src->eof_flags & XFS_EOF_FLAGS_GID) {
		dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
		if (!gid_valid(dst->eof_gid))
			return -EINVAL;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dwight Engen
191
97.45%
1
50.00%
Dave Chinner
5
2.55%
1
50.00%
Total
196
100.00%
2
100.00%

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

void xfs_icache_disable_reclaim(struct xfs_mount *mp);
void xfs_icache_enable_reclaim(struct xfs_mount *mp);

#endif
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Dwight Engen
211
32.41%
1
3.12%
Brian Foster
145
22.27%
8
25.00%
Darrick J. Wong
104
15.98%
4
12.50%
Dave Chinner
102
15.67%
9
28.12%
Christoph Hellwig
46
7.07%
4
12.50%
David Chinner
43
6.61%
6
18.75%
Total
651
100.00%
32
100.00%
Directory: fs/xfs

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