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