1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. 5 */ 6 7#ifndef __RGRP_DOT_H__ 8#define __RGRP_DOT_H__ 9 10#include <linux/slab.h> 11#include <linux/uaccess.h> 12 13/* Since each block in the file system is represented by two bits in the 14 * bitmap, one 64-bit word in the bitmap will represent 32 blocks. 15 * By reserving 32 blocks at a time, we can optimize / shortcut how we search 16 * through the bitmaps by looking a word at a time. 17 */ 18#define RGRP_RSRV_MINBLKS 32 19#define RGRP_RSRV_ADDBLKS 64 20 21struct gfs2_rgrpd; 22struct gfs2_sbd; 23struct gfs2_holder; 24 25void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd); 26 27struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact); 28struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp); 29struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd); 30 31void gfs2_clear_rgrpd(struct gfs2_sbd *sdp); 32int gfs2_rindex_update(struct gfs2_sbd *sdp); 33void gfs2_free_clones(struct gfs2_rgrpd *rgd); 34int gfs2_rgrp_go_instantiate(struct gfs2_glock *gl); 35void gfs2_rgrp_brelse(struct gfs2_rgrpd *rgd); 36 37struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip); 38 39#define GFS2_AF_ORLOV 1 40int gfs2_inplace_reserve(struct gfs2_inode *ip, 41 struct gfs2_alloc_parms *ap); 42void gfs2_inplace_release(struct gfs2_inode *ip); 43 44int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n, 45 bool dinode); 46 47void gfs2_rs_deltree(struct gfs2_blkreserv *rs); 48void gfs2_rs_delete(struct gfs2_inode *ip); 49void __gfs2_free_blocks(struct gfs2_inode *ip, struct gfs2_rgrpd *rgd, 50 u64 bstart, u32 blen, int meta); 51void gfs2_free_meta(struct gfs2_inode *ip, struct gfs2_rgrpd *rgd, 52 u64 bstart, u32 blen); 53void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip); 54void gfs2_unlink_di(struct inode *inode); 55int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, 56 unsigned int type); 57 58struct gfs2_rgrp_list { 59 unsigned int rl_rgrps; 60 unsigned int rl_space; 61 struct gfs2_rgrpd **rl_rgd; 62 struct gfs2_holder *rl_ghs; 63}; 64 65void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist, 66 u64 block); 67void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, 68 unsigned int state, u16 flags); 69void gfs2_rlist_free(struct gfs2_rgrp_list *rlist); 70u64 gfs2_ri_total(struct gfs2_sbd *sdp); 71void gfs2_rgrp_dump(struct seq_file *seq, struct gfs2_rgrpd *rgd, 72 const char *fs_id_buf); 73int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, 74 struct buffer_head *bh, 75 const struct gfs2_bitmap *bi, unsigned minlen, 76 u64 *ptrimmed); 77int gfs2_fitrim(struct file *filp, void __user *argp); 78 79/* This is how to tell if a reservation is in the rgrp tree: */ 80static inline bool gfs2_rs_active(const struct gfs2_blkreserv *rs) 81{ 82 return !RB_EMPTY_NODE(&rs->rs_node); 83} 84 85static inline int rgrp_contains_block(struct gfs2_rgrpd *rgd, u64 block) 86{ 87 u64 first = rgd->rd_data0; 88 u64 last = first + rgd->rd_data; 89 return first <= block && block < last; 90} 91 92void check_and_update_goal(struct gfs2_inode *ip); 93 94void rgrp_lock_local(struct gfs2_rgrpd *rgd); 95void rgrp_unlock_local(struct gfs2_rgrpd *rgd); 96 97#endif /* __RGRP_DOT_H__ */ 98