trans.h

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/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License version 2.
 */

#ifndef __TRANS_DOT_H__
#define __TRANS_DOT_H__

#include <linux/buffer_head.h>
struct gfs2_sbd;
struct gfs2_rgrpd;
struct gfs2_glock;

#define RES_DINODE  1
#define RES_INDIRECT    1
#define RES_JDATA   1
#define RES_DATA    1
#define RES_LEAF    1
#define RES_RG_HDR  1
#define RES_RG_BIT  2
#define RES_EATTR   1
#define RES_STATFS  1
#define RES_QUOTA   2

/* reserve either the number of blocks to be allocated plus the rg header
 * block, or all of the blocks in the rg, whichever is smaller */
static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip, unsigned requested)
{
    if (requested < ip->i_rgd->rd_length)
        return requested + 1;
    return ip->i_rgd->rd_length;
}

extern int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
                unsigned int revokes);

extern void gfs2_trans_end(struct gfs2_sbd *sdp);
extern void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta);
extern void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
extern void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len);

#endif /* __TRANS_DOT_H__ */