1 /* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. 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 7 * of the GNU General Public License version 2. 8 */ 9 10 #ifndef __RGRP_DOT_H__ 11 #define __RGRP_DOT_H__ 12 13 #include <linux/slab.h> 14 #include <linux/uaccess.h> 15 16 struct gfs2_rgrpd; 17 struct gfs2_sbd; 18 struct gfs2_holder; 19 20 extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd); 21 22 extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact); 23 extern struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp); 24 extern struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd); 25 26 extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp); 27 extern int gfs2_rindex_update(struct gfs2_sbd *sdp); 28 extern void gfs2_free_clones(struct gfs2_rgrpd *rgd); 29 extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh); 30 extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh); 31 32 extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip); 33 static inline void gfs2_qadata_put(struct gfs2_inode *ip) 34 { 35 BUG_ON(ip->i_qadata == NULL); 36 kfree(ip->i_qadata); 37 ip->i_qadata = NULL; 38 } 39 40 extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested); 41 extern void gfs2_inplace_release(struct gfs2_inode *ip); 42 43 extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n, 44 bool dinode, u64 *generation); 45 46 extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta); 47 extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen); 48 extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip); 49 extern void gfs2_unlink_di(struct inode *inode); 50 extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, 51 unsigned int type); 52 53 struct 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 60 extern void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist, 61 u64 block); 62 extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state); 63 extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist); 64 extern u64 gfs2_ri_total(struct gfs2_sbd *sdp); 65 extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); 66 extern 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); 69 extern int gfs2_fitrim(struct file *filp, void __user *argp); 70 71 #endif /* __RGRP_DOT_H__ */ 72