LXR linux/fs/gfs2/trans.h

   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 __TRANS_DOT_H__
  11#define __TRANS_DOT_H__
  12
  13#include <linux/buffer_head.h>
  14struct gfs2_sbd;
  15struct gfs2_rgrpd;
  16struct gfs2_glock;
  17
  18#define RES_DINODE      1
  19#define RES_INDIRECT    1
  20#define RES_JDATA       1
  21#define RES_DATA        1
  22#define RES_LEAF        1
  23#define RES_RG_HDR      1
  24#define RES_RG_BIT      2
  25#define RES_EATTR       1
  26#define RES_STATFS      1
  27#define RES_QUOTA       2
  28
  29/* reserve either the number of blocks to be allocated plus the rg header
  30 * block, or all of the blocks in the rg, whichever is smaller */
  31static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip, unsigned requested)
  32{
  33        if (requested < ip->i_rgd->rd_length)
  34                return requested + 1;
  35        return ip->i_rgd->rd_length;
  36}
  37
  38extern int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
  39                            unsigned int revokes);
  40
  41extern void gfs2_trans_end(struct gfs2_sbd *sdp);
  42extern void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh);
  43extern void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh);
  44extern void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
  45extern void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len);
  46
  47#endif /* __TRANS_DOT_H__ */
  48