Git Repo - linux.git/blame

Commit	Line	Data
7336d0e6	1	/* SPDX-License-Identifier: GPL-2.0-only */
b3b94faa DT	2	/*
b3b94faa DT	3	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
fe6c991c	4	* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
b3b94faa DT	5	*/
	6
	7	#ifndef __RGRP_DOT_H__
	8	#define __RGRP_DOT_H__
	9
5a0e3ad6	10	#include <linux/slab.h>
66fc061b	11	#include <linux/uaccess.h>
5a0e3ad6	12
8e2e0047 BP	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	*/
ad899458	18	#define RGRP_RSRV_MINBLKS 32
1a855033	19	#define RGRP_RSRV_ADDBLKS 64
8e2e0047	20
f2f7ba52 SW	21	struct gfs2_rgrpd;
	22	struct gfs2_sbd;
	23	struct gfs2_holder;
	24
0b2355fe	25	void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd);
b3b94faa	26
0b2355fe AG	27	struct gfs2_rgrpd gfs2_blk2rgrpd(struct gfs2_sbd sdp, u64 blk, bool exact);
	28	struct gfs2_rgrpd gfs2_rgrpd_get_first(struct gfs2_sbd sdp);
	29	struct gfs2_rgrpd gfs2_rgrpd_get_next(struct gfs2_rgrpd rgd);
b3b94faa	30
0b2355fe AG	31	void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
	32	int gfs2_rindex_update(struct gfs2_sbd *sdp);
	33	void gfs2_free_clones(struct gfs2_rgrpd *rgd);
	34	int gfs2_rgrp_go_instantiate(struct gfs2_glock *gl);
	35	void gfs2_rgrp_brelse(struct gfs2_rgrpd *rgd);
b3b94faa	36
0b2355fe	37	struct gfs2_alloc gfs2_alloc_get(struct gfs2_inode ip);
8e2e0047	38
9dbe9610	39	#define GFS2_AF_ORLOV 1
0b2355fe AG	40	int gfs2_inplace_reserve(struct gfs2_inode *ip,
	41	struct gfs2_alloc_parms *ap);
	42	void gfs2_inplace_release(struct gfs2_inode *ip);
	43
	44	int gfs2_alloc_blocks(struct gfs2_inode ip, u64 bn, unsigned int *n,
	45	bool dinode);
	46
	47	void gfs2_rs_deltree(struct gfs2_blkreserv *rs);
	48	void gfs2_rs_delete(struct gfs2_inode *ip);
	49	void __gfs2_free_blocks(struct gfs2_inode ip, struct gfs2_rgrpd rgd,
	50	u64 bstart, u32 blen, int meta);
	51	void gfs2_free_meta(struct gfs2_inode ip, struct gfs2_rgrpd rgd,
	52	u64 bstart, u32 blen);
	53	void gfs2_free_di(struct gfs2_rgrpd rgd, struct gfs2_inode ip);
	54	void gfs2_unlink_di(struct inode *inode);
	55	int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr,
	56	unsigned int type);
b3b94faa DT	57
	58	struct 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
0b2355fe AG	65	void gfs2_rlist_add(struct gfs2_inode ip, struct gfs2_rgrp_list rlist,
	66	u64 block);
	67	void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist,
	68	unsigned int state, u16 flags);
	69	void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
	70	u64 gfs2_ri_total(struct gfs2_sbd *sdp);
	71	void gfs2_rgrp_dump(struct seq_file seq, struct gfs2_rgrpd rgd,
	72	const char *fs_id_buf);
	73	int 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);
	77	int gfs2_fitrim(struct file filp, void __user argp);
b3b94faa	78
4a993fb1	79	/* This is how to tell if a reservation is in the rgrp tree: */
a097dc7e	80	static inline bool gfs2_rs_active(const struct gfs2_blkreserv *rs)
8e2e0047	81	{
3d39fcd1	82	return !RB_EMPTY_NODE(&rs->rs_node);
8e2e0047 BP	83	}
8e2e0047 BP	84
d552a2b9 BP	85	static 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
0b2355fe	92	void check_and_update_goal(struct gfs2_inode *ip);
9e514605	93
0b2355fe AG	94	void rgrp_lock_local(struct gfs2_rgrpd *rgd);
0b2355fe AG	95	void rgrp_unlock_local(struct gfs2_rgrpd *rgd);
9e514605	96
b3b94faa	97	#endif /* __RGRP_DOT_H__ */