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gerrit-public.fairphone.software / kernel / msm / 8e1fe4ce180bcbaeffb5a59fe2e765d6ec750b5a / . / fs / gfs2 / rgrp.h
blob: b4b10f4de25f2407c7e9e271de98ab2630cf5255 [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>
Steven Whitehouse66fc0612012-02-08 12:58:32 +0000[diff] [blame]14#include <linux/uaccess.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +0900[diff] [blame]15
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]16struct gfs2_rgrpd;
17struct gfs2_sbd;
18struct gfs2_holder;
19
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]20extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]21
Steven Whitehouse66fc0612012-02-08 12:58:32 +0000[diff] [blame]22extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact);
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100[diff] [blame]23extern struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp);
24extern struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]25
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]26extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100[diff] [blame]27extern int gfs2_rindex_update(struct gfs2_sbd *sdp);
28extern void gfs2_free_clones(struct gfs2_rgrpd *rgd);
Bob Peterson7c9ca622011-08-31 09:53:19 +0100[diff] [blame]29extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh);
30extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]31
Bob Peterson564e12b2011-11-21 13:36:17 -0500[diff] [blame]32extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip);
33static inline void gfs2_qadata_put(struct gfs2_inode *ip)
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]34{
Bob Peterson564e12b2011-11-21 13:36:17 -0500[diff] [blame]35 BUG_ON(ip->i_qadata == NULL);
36 kfree(ip->i_qadata);
37 ip->i_qadata = NULL;
Steven Whitehouse2c1e52a2006-09-05 15:41:57 -0400[diff] [blame]38}
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]39
Bob Peterson564e12b2011-11-21 13:36:17 -0500[diff] [blame]40extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]41extern void gfs2_inplace_release(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]42
Bob Peterson6e87ed02011-11-18 10:58:32 -0500[diff] [blame]43extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n,
44 bool dinode, u64 *generation);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]45
Eric Sandeen46fcb2e2011-06-23 10:39:34 -0500[diff] [blame]46extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta);
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]47extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
48extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
49extern void gfs2_unlink_di(struct inode *inode);
Steven Whitehouseacf7e242009-09-08 18:00:30 +0100[diff] [blame]50extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr,
51 unsigned int type);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]52
53struct gfs2_rgrp_list {
54 unsigned int rl_rgrps;
55 unsigned int rl_space;
56 struct gfs2_rgrpd **rl_rgd;
57 struct gfs2_holder *rl_ghs;
58};
59
Steven Whitehouse70b0c362011-09-02 16:08:09 +0100[diff] [blame]60extern void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist,
Steven Whitehouse09010972009-05-20 10:48:47 +0100[diff] [blame]61 u64 block);
62extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
63extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
64extern u64 gfs2_ri_total(struct gfs2_sbd *sdp);
65extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl);
Steven Whitehouse66fc0612012-02-08 12:58:32 +0000[diff] [blame]66extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset,
67 struct buffer_head *bh,
68 const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed);
69extern int gfs2_fitrim(struct file *filp, void __user *argp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]70
71#endif /* __RGRP_DOT_H__ */