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gerrit-public.fairphone.software / kernel / msm-4.9 / c65a30f35f938b421ac67c34a9e70b0e49e6019a / . / fs / gfs2 / quota.h
blob: 90bf1c302a983df6c74191f5c2341b8cf5c70f69 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -0400[diff] [blame]3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]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
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400[diff] [blame]7 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]8 */
9
10#ifndef __QUOTA_DOT_H__
11#define __QUOTA_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]13struct gfs2_inode;
14struct gfs2_sbd;
Ying Han1495f232011-05-24 17:12:27 -0700[diff] [blame]15struct shrink_control;
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]16
Steven Whitehousecd915492006-09-04 12:49:07 -0400[diff] [blame]17#define NO_QUOTA_CHANGE ((u32)-1)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]18
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]19extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
20extern void gfs2_quota_unhold(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]21
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]22extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
23extern void gfs2_quota_unlock(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]24
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]25extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
26extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
27 u32 uid, u32 gid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]28
Christoph Hellwig5fb324a2010-02-16 03:44:52 -0500[diff] [blame]29extern int gfs2_quota_sync(struct super_block *sb, int type, int wait);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]30extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]31
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]32extern int gfs2_quota_init(struct gfs2_sbd *sdp);
33extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
34extern int gfs2_quotad(void *data);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]35
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500[diff] [blame]36extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
37
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]38static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
39{
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;
53}
54
Ying Han1495f232011-05-24 17:12:27 -0700[diff] [blame]55extern int gfs2_shrink_qd_memory(struct shrinker *shrink,
56 struct shrink_control *sc);
Steven Whitehousecc632e72009-09-15 09:59:02 +0100[diff] [blame]57extern const struct quotactl_ops gfs2_quotactl_ops;
Abhijith Das0a7ab792009-01-07 16:03:37 -0600[diff] [blame]58
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]59#endif /* __QUOTA_DOT_H__ */