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7#ifndef __QUOTA_DOT_H__
8#define __QUOTA_DOT_H__
9
10#include <linux/list_lru.h>
11
12struct gfs2_inode;
13struct gfs2_sbd;
14
15#define NO_UID_QUOTA_CHANGE INVALID_UID
16#define NO_GID_QUOTA_CHANGE INVALID_GID
17
18extern int gfs2_qa_alloc(struct gfs2_inode *ip);
19extern void gfs2_qa_delete(struct gfs2_inode *ip, atomic_t *wcount);
20extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
21extern void gfs2_quota_unhold(struct gfs2_inode *ip);
22
23extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
24extern void gfs2_quota_unlock(struct gfs2_inode *ip);
25
26extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid,
27 struct gfs2_alloc_parms *ap);
28extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
29 kuid_t uid, kgid_t gid);
30
31extern int gfs2_quota_sync(struct super_block *sb, int type);
32extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
33
34extern int gfs2_quota_init(struct gfs2_sbd *sdp);
35extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
36extern int gfs2_quotad(void *data);
37
38extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
39
40static inline int gfs2_quota_lock_check(struct gfs2_inode *ip,
41 struct gfs2_alloc_parms *ap)
42{
43 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
44 int ret;
45
46 ap->allowed = UINT_MAX;
47 if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
48 return 0;
49 ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
50 if (ret)
51 return ret;
52 if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
53 return 0;
54 ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid, ap);
55 if (ret)
56 gfs2_quota_unlock(ip);
57 return ret;
58}
59
60extern const struct quotactl_ops gfs2_quotactl_ops;
61extern struct shrinker gfs2_qd_shrinker;
62extern struct list_lru gfs2_qd_lru;
63extern void __init gfs2_quota_hash_init(void);
64
65#endif
66