1 /*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */
9
10 #ifndef __QUOTA_DOT_H__
11 #define __QUOTA_DOT_H__
12
13 struct gfs2_inode;
14 struct gfs2_sbd;
15
16 #define NO_QUOTA_CHANGE ((u32)-1)
17
18 extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
19 extern void gfs2_quota_unhold(struct gfs2_inode *ip);
20
21 extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
22 extern void gfs2_quota_unlock(struct gfs2_inode *ip);
23
24 extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
25 extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
26 u32 uid, u32 gid);
27
28 extern int gfs2_quota_sync(struct gfs2_sbd *sdp);
29 extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
30
31 extern int gfs2_quota_init(struct gfs2_sbd *sdp);
32 extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
33 extern int gfs2_quotad(void *data);
34
35 static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
36 {
37 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
38 int ret;
39 if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
40 return 0;
41 ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
42 if (ret)
43 return ret;
44 if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
45 return 0;
46 ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
47 if (ret)
48 gfs2_quota_unlock(ip);
49 return ret;
50 }
51
52 extern int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask);
53
54 #endif /* __QUOTA_DOT_H__ */
55
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