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gerrit-public.fairphone.software / kernel / msm-4.9 / 6edd7679db92376ca54f328d6b0f12291c2dab35 / . / fs / gfs2 / rgrp.h
blob: 1e76ff0f3e00cf24328dbb169b0b38bdff14d25c [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Bob Petersonfe6c9912008-01-28 11:13:02 -0600[diff] [blame]3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]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
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400[diff] [blame]7 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]8 */
9
10#ifndef __RGRP_DOT_H__
11#define __RGRP_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]13struct gfs2_rgrpd;
14struct gfs2_sbd;
15struct gfs2_holder;
16
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]17extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]18
Steven Whitehousecd915492006-09-04 12:49:07 -0400[diff] [blame]19struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]20struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp);
21struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd);
22
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]23extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
24extern int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]25
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]26extern int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd);
27extern void gfs2_rgrp_bh_hold(struct gfs2_rgrpd *rgd);
28extern void gfs2_rgrp_bh_put(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]29
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]30extern void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]31
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]32extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]33static inline void gfs2_alloc_put(struct gfs2_inode *ip)
34{
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000[diff] [blame]35 BUG_ON(ip->i_alloc == NULL);
36 kfree(ip->i_alloc);
37 ip->i_alloc = NULL;
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]38}
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]39
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]40extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file,
41 unsigned int line);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]42#define gfs2_inplace_reserve(ip) \
43gfs2_inplace_reserve_i((ip), __FILE__, __LINE__)
44
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]45extern void gfs2_inplace_release(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]46
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]47extern unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]48
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]49extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
50extern u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]51
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]52extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
53extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
54extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
55extern void gfs2_unlink_di(struct inode *inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]56
57struct 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
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]64extern void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
65 u64 block);
66extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
67extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
68extern u64 gfs2_ri_total(struct gfs2_sbd *sdp);
69extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]70
71#endif /* __RGRP_DOT_H__ */