ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
[linux/fpc-iii.git] / fs / gfs2 / quota.h
blob90bf1c302a983df6c74191f5c2341b8cf5c70f69
1 /*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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 */
10 #ifndef __QUOTA_DOT_H__
11 #define __QUOTA_DOT_H__
13 struct gfs2_inode;
14 struct gfs2_sbd;
15 struct shrink_control;
17 #define NO_QUOTA_CHANGE ((u32)-1)
19 extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
20 extern void gfs2_quota_unhold(struct gfs2_inode *ip);
22 extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
23 extern void gfs2_quota_unlock(struct gfs2_inode *ip);
25 extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
26 extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
27 u32 uid, u32 gid);
29 extern int gfs2_quota_sync(struct super_block *sb, int type, int wait);
30 extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
32 extern int gfs2_quota_init(struct gfs2_sbd *sdp);
33 extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
34 extern int gfs2_quotad(void *data);
36 extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
38 static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
40 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
41 int ret;
42 if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
43 return 0;
44 ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
45 if (ret)
46 return ret;
47 if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
48 return 0;
49 ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
50 if (ret)
51 gfs2_quota_unlock(ip);
52 return ret;
55 extern int gfs2_shrink_qd_memory(struct shrinker *shrink,
56 struct shrink_control *sc);
57 extern const struct quotactl_ops gfs2_quotactl_ops;
59 #endif /* __QUOTA_DOT_H__ */