David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Bob Peterson | fe6c991 | 2008-01-28 11:13:02 -0600 | [diff] [blame] | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 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 Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #ifndef __RGRP_DOT_H__ |
| 11 | #define __RGRP_DOT_H__ |
| 12 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Steven Whitehouse | 66fc061 | 2012-02-08 12:58:32 +0000 | [diff] [blame] | 14 | #include <linux/uaccess.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | |
Bob Peterson | 8e2e004 | 2012-07-19 08:12:40 -0400 | [diff] [blame] | 16 | /* Since each block in the file system is represented by two bits in the |
| 17 | * bitmap, one 64-bit word in the bitmap will represent 32 blocks. |
| 18 | * By reserving 32 blocks at a time, we can optimize / shortcut how we search |
| 19 | * through the bitmaps by looking a word at a time. |
| 20 | */ |
| 21 | #define RGRP_RSRV_MINBYTES 8 |
| 22 | #define RGRP_RSRV_MINBLKS ((u32)(RGRP_RSRV_MINBYTES * GFS2_NBBY)) |
| 23 | |
Steven Whitehouse | f2f7ba5 | 2006-09-05 10:39:21 -0400 | [diff] [blame] | 24 | struct gfs2_rgrpd; |
| 25 | struct gfs2_sbd; |
| 26 | struct gfs2_holder; |
| 27 | |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 28 | extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | |
Steven Whitehouse | 66fc061 | 2012-02-08 12:58:32 +0000 | [diff] [blame] | 30 | extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact); |
Steven Whitehouse | 8339ee5 | 2011-08-31 16:38:29 +0100 | [diff] [blame] | 31 | extern struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp); |
| 32 | extern struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 33 | |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 34 | extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp); |
Steven Whitehouse | 8339ee5 | 2011-08-31 16:38:29 +0100 | [diff] [blame] | 35 | extern int gfs2_rindex_update(struct gfs2_sbd *sdp); |
| 36 | extern void gfs2_free_clones(struct gfs2_rgrpd *rgd); |
Bob Peterson | 7c9ca62 | 2011-08-31 09:53:19 +0100 | [diff] [blame] | 37 | extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh); |
| 38 | extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 39 | |
Bob Peterson | 8e2e004 | 2012-07-19 08:12:40 -0400 | [diff] [blame] | 40 | extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip); |
| 41 | |
Steven Whitehouse | 9dbe961 | 2012-10-31 10:37:10 +0000 | [diff] [blame] | 42 | #define GFS2_AF_ORLOV 1 |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame^] | 43 | extern int gfs2_inplace_reserve(struct gfs2_inode *ip, const struct gfs2_alloc_parms *ap); |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 44 | extern void gfs2_inplace_release(struct gfs2_inode *ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 45 | |
Bob Peterson | 6e87ed0 | 2011-11-18 10:58:32 -0500 | [diff] [blame] | 46 | extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n, |
| 47 | bool dinode, u64 *generation); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 48 | |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 49 | extern int gfs2_rs_alloc(struct gfs2_inode *ip); |
Bob Peterson | 2009521 | 2013-03-13 10:26:38 -0400 | [diff] [blame] | 50 | extern void gfs2_rs_deltree(struct gfs2_blkreserv *rs); |
Steven Whitehouse | af5c269 | 2013-09-27 12:49:33 +0100 | [diff] [blame] | 51 | extern void gfs2_rs_delete(struct gfs2_inode *ip, atomic_t *wcount); |
Eric Sandeen | 46fcb2e | 2011-06-23 10:39:34 -0500 | [diff] [blame] | 52 | extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta); |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 53 | extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen); |
| 54 | extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip); |
| 55 | extern void gfs2_unlink_di(struct inode *inode); |
Steven Whitehouse | acf7e24 | 2009-09-08 18:00:30 +0100 | [diff] [blame] | 56 | extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, |
| 57 | unsigned int type); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 58 | |
| 59 | struct gfs2_rgrp_list { |
| 60 | unsigned int rl_rgrps; |
| 61 | unsigned int rl_space; |
| 62 | struct gfs2_rgrpd **rl_rgd; |
| 63 | struct gfs2_holder *rl_ghs; |
| 64 | }; |
| 65 | |
Steven Whitehouse | 70b0c36 | 2011-09-02 16:08:09 +0100 | [diff] [blame] | 66 | extern void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist, |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 67 | u64 block); |
| 68 | extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state); |
| 69 | extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist); |
| 70 | extern u64 gfs2_ri_total(struct gfs2_sbd *sdp); |
| 71 | extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); |
Steven Whitehouse | 66fc061 | 2012-02-08 12:58:32 +0000 | [diff] [blame] | 72 | extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, |
| 73 | struct buffer_head *bh, |
| 74 | const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed); |
| 75 | extern int gfs2_fitrim(struct file *filp, void __user *argp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 76 | |
Steven Whitehouse | 4a993fb | 2012-07-31 15:21:20 +0100 | [diff] [blame] | 77 | /* This is how to tell if a reservation is in the rgrp tree: */ |
| 78 | static inline bool gfs2_rs_active(struct gfs2_blkreserv *rs) |
Bob Peterson | 8e2e004 | 2012-07-19 08:12:40 -0400 | [diff] [blame] | 79 | { |
Steven Whitehouse | 4a993fb | 2012-07-31 15:21:20 +0100 | [diff] [blame] | 80 | return rs && !RB_EMPTY_NODE(&rs->rs_node); |
Bob Peterson | 8e2e004 | 2012-07-19 08:12:40 -0400 | [diff] [blame] | 81 | } |
| 82 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 83 | #endif /* __RGRP_DOT_H__ */ |