trans.h 1.49 KB
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/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
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 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
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 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
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 * of the GNU General Public License version 2.
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 */

#ifndef __TRANS_DOT_H__
#define __TRANS_DOT_H__

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

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

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/* 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 */
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static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip, unsigned requested)
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{
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	if (requested < ip->i_rgd->rd_length)
		return requested + 1;
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	return ip->i_rgd->rd_length;
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}

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extern int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
			    unsigned int revokes);
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extern void gfs2_trans_end(struct gfs2_sbd *sdp);
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extern void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh);
extern void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh);
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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);
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#endif /* __TRANS_DOT_H__ */