fs/gfs2/rgrp.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2008 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 __RGRP_DOT_H__
  11 #define __RGRP_DOT_H__
  12
  13 struct gfs2_rgrpd;
  14 struct gfs2_sbd;
  15 struct gfs2_holder;
  16
  17 extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd);
  18
  19 struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk);
  20 struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp);
  21 struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd);
  22
  23 extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
  24 extern int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh);
  25
  26 extern int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd);
  27 extern void gfs2_rgrp_bh_hold(struct gfs2_rgrpd *rgd);
  28 extern void gfs2_rgrp_bh_put(struct gfs2_rgrpd *rgd);
  29
  30 extern void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd);
  31
  32 extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
  33 static inline void gfs2_alloc_put(struct gfs2_inode *ip)
  34 {
  35         BUG_ON(ip->i_alloc == NULL);
  36         kfree(ip->i_alloc);
  37         ip->i_alloc = NULL;
  38 }
  39
  40 extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file,
  41                                   unsigned int line);
  42 #define gfs2_inplace_reserve(ip) \
  43 gfs2_inplace_reserve_i((ip), __FILE__, __LINE__)
  44
  45 extern void gfs2_inplace_release(struct gfs2_inode *ip);
  46
  47 extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
  48 extern int gfs2_alloc_di(struct gfs2_inode *ip, u64 *bn, u64 *generation);
  49
  50 extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
  51 extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
  52 extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
  53 extern void gfs2_unlink_di(struct inode *inode);
  54 extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr,
  55                                unsigned int type);
  56
  57 struct gfs2_rgrp_list {
  58         unsigned int rl_rgrps;
  59         unsigned int rl_space;
  60         struct gfs2_rgrpd **rl_rgd;
  61         struct gfs2_holder *rl_ghs;
  62 };
  63
  64 extern void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
  65                            u64 block);
  66 extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
  67 extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
  68 extern u64 gfs2_ri_total(struct gfs2_sbd *sdp);
  69 extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl);
  70
  71 #endif /* __RGRP_DOT_H__ */