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gerrit-public.fairphone.software / fp2-dev / kernel / msm / 690f9d172f39604d0347d0ce5435371f65a0441c / . / fs / gfs2 / rgrp.h
blob: a80e3034ac470c44b4d456085909c7e9aef1db77 [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
Tejun Heo5a0e3ad2010-03-24 17:04:11 +0900[diff] [blame]13#include <linux/slab.h>
14
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]15struct gfs2_rgrpd;
16struct gfs2_sbd;
17struct gfs2_holder;
18
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]19extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]20
Steven Whitehousecd915492006-09-04 12:49:07 -0400[diff] [blame]21struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]22struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp);
23struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd);
24
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]25extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
26extern int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]27
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]28extern int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd);
29extern void gfs2_rgrp_bh_hold(struct gfs2_rgrpd *rgd);
30extern void gfs2_rgrp_bh_put(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 void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]33
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]34extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]35static inline void gfs2_alloc_put(struct gfs2_inode *ip)
36{
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000[diff] [blame]37 BUG_ON(ip->i_alloc == NULL);
38 kfree(ip->i_alloc);
39 ip->i_alloc = NULL;
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]40}
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]41
Bob Peterson46290342010-09-30 10:34:00 -0400[diff] [blame]42extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, int hold_rindex,
43 char *file, unsigned int line);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]44#define gfs2_inplace_reserve(ip) \
Bob Peterson46290342010-09-30 10:34:00 -0400[diff] [blame]45 gfs2_inplace_reserve_i((ip), 1, __FILE__, __LINE__)
46#define gfs2_inplace_reserve_ri(ip) \
47 gfs2_inplace_reserve_i((ip), 0, __FILE__, __LINE__)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]48
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]49extern void gfs2_inplace_release(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]50
Benjamin Marzinski086d8332010-11-23 23:52:55 -0600[diff] [blame]51extern int gfs2_ri_update(struct gfs2_inode *ip);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]52extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
Steven Whitehouse6050b9c2009-07-31 16:19:40 +0100[diff] [blame]53extern int gfs2_alloc_di(struct gfs2_inode *ip, u64 *bn, u64 *generation);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]54
Bob Peterson4c16c362011-02-23 16:11:33 -0500[diff] [blame]55extern void __gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]56extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
Bob Peterson4c16c362011-02-23 16:11:33 -0500[diff] [blame]57extern void __gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]58extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
59extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
60extern void gfs2_unlink_di(struct inode *inode);
Steven Whitehouseacf7e242009-09-08 18:00:30 +0100[diff] [blame]61extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr,
62 unsigned int type);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]63
64struct gfs2_rgrp_list {
65 unsigned int rl_rgrps;
66 unsigned int rl_space;
67 struct gfs2_rgrpd **rl_rgd;
68 struct gfs2_holder *rl_ghs;
69};
70
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]71extern void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
72 u64 block);
73extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
74extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
75extern u64 gfs2_ri_total(struct gfs2_sbd *sdp);
76extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]77
78#endif /* __RGRP_DOT_H__ */