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gerrit-public.fairphone.software / kernel / msm-4.9 / 56be178875cf699a17cc285171492353620ef0ae / . / fs / gfs2 / rgrp.h
blob: cf5c50180192728919c977f8287981f62200bb13 [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 Whitehouse8339ee52011-08-31 16:38:29 +0100[diff] [blame]21extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk);
22extern struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp);
23extern struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]24
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]25extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100[diff] [blame]26extern int gfs2_rindex_update(struct gfs2_sbd *sdp);
27extern void gfs2_free_clones(struct gfs2_rgrpd *rgd);
Bob Peterson7c9ca622011-08-31 09:53:19 +0100[diff] [blame]28extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh);
29extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]30
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]31extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]32static inline void gfs2_alloc_put(struct gfs2_inode *ip)
33{
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000[diff] [blame]34 BUG_ON(ip->i_alloc == NULL);
35 kfree(ip->i_alloc);
36 ip->i_alloc = NULL;
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]37}
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]38
Steven Whitehouse9ae32422011-09-20 12:16:11 +0100[diff] [blame]39extern int gfs2_inplace_reserve(struct gfs2_inode *ip);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]40extern void gfs2_inplace_release(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]41
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]42extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
Steven Whitehouse6050b9c2009-07-31 16:19:40 +0100[diff] [blame]43extern int gfs2_alloc_di(struct gfs2_inode *ip, u64 *bn, u64 *generation);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]44
Eric Sandeen46fcb2e2011-06-23 10:39:34 -0500[diff] [blame]45extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]46extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
47extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
48extern void gfs2_unlink_di(struct inode *inode);
Steven Whitehouseacf7e242009-09-08 18:00:30 +0100[diff] [blame]49extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr,
50 unsigned int type);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]51
52struct gfs2_rgrp_list {
53 unsigned int rl_rgrps;
54 unsigned int rl_space;
55 struct gfs2_rgrpd **rl_rgd;
56 struct gfs2_holder *rl_ghs;
57};
58
Steven Whitehouse70b0c362011-09-02 16:08:09 +0100[diff] [blame]59extern void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist,
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]60 u64 block);
61extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
62extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
63extern u64 gfs2_ri_total(struct gfs2_sbd *sdp);
64extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl);
Bob Peterson7c9ca622011-08-31 09:53:19 +0100[diff] [blame]65extern void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset,
66 struct buffer_head *bh,
67 const struct gfs2_bitmap *bi);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]68
69#endif /* __RGRP_DOT_H__ */