[linux-2.6-block.git] / fs / gfs2 / log.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 */

#ifndef __LOG_DOT_H__
#define __LOG_DOT_H__

#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/writeback.h>
#include "incore.h"
#include "inode.h"

/**
 * gfs2_log_lock - acquire the right to mess with the log manager
 * @sdp: the filesystem
 *
 */

static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
__acquires(&sdp->sd_log_lock)
{
	spin_lock(&sdp->sd_log_lock);
}

/**
 * gfs2_log_unlock - release the right to mess with the log manager
 * @sdp: the filesystem
 *
 */

static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
__releases(&sdp->sd_log_lock)
{
	spin_unlock(&sdp->sd_log_lock);
}

static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
					  unsigned int value)
{
	if (++value == sdp->sd_jdesc->jd_blocks) {
		value = 0;
	}
	sdp->sd_log_head = sdp->sd_log_tail = value;
}

static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
{
	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);

	if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
		return;

	if (!test_bit(GIF_ORDERED, &ip->i_flags)) {
		spin_lock(&sdp->sd_ordered_lock);
		if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags))
			list_add(&ip->i_ordered, &sdp->sd_log_ordered);
		spin_unlock(&sdp->sd_ordered_lock);
	}
}

extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);

extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
				  u64 seq, u32 tail, u32 lblock, u32 flags,
				  int op_flags);
extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
			   u32 type);
extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);

extern int gfs2_logd(void *data);
extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
extern void gfs2_write_revokes(struct gfs2_sbd *sdp);

#endif /* __LOG_DOT_H__ */
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.
3a8a9a10	4	* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
b3b94faa DT	5	*/
	6
	7	#ifndef __LOG_DOT_H__
	8	#define __LOG_DOT_H__
	9
f2f7ba52 SW	10	#include <linux/list.h>
f2f7ba52 SW	11	#include <linux/spinlock.h>
4667a0ec	12	#include <linux/writeback.h>
f2f7ba52	13	#include "incore.h"
845802b1	14	#include "inode.h"
f2f7ba52	15
b3b94faa DT	16	/**
	17	* gfs2_log_lock - acquire the right to mess with the log manager
	18	* @sdp: the filesystem
	19	*
	20	*/
	21
	22	static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
2d81afb8	23	__acquires(&sdp->sd_log_lock)
b3b94faa DT	24	{
	25	spin_lock(&sdp->sd_log_lock);
	26	}
	27
	28	/**
	29	* gfs2_log_unlock - release the right to mess with the log manager
	30	* @sdp: the filesystem
	31	*
	32	*/
	33
	34	static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
2d81afb8	35	__releases(&sdp->sd_log_lock)
b3b94faa DT	36	{
	37	spin_unlock(&sdp->sd_log_lock);
	38	}
	39
	40	static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
	41	unsigned int value)
	42	{
	43	if (++value == sdp->sd_jdesc->jd_blocks) {
	44	value = 0;
b3b94faa DT	45	}
	46	sdp->sd_log_head = sdp->sd_log_tail = value;
	47	}
	48
45138990 SW	49	static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
45138990 SW	50	{
977767a7	51	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
45138990	52
977767a7	53	if (gfs2_is_jdata(ip) \|\| !gfs2_is_ordered(sdp))
845802b1 AG	54	return;
845802b1 AG	55
45138990 SW	56	if (!test_bit(GIF_ORDERED, &ip->i_flags)) {
	57	spin_lock(&sdp->sd_ordered_lock);
	58	if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags))
a5b1d3fc	59	list_add(&ip->i_ordered, &sdp->sd_log_ordered);
45138990 SW	60	spin_unlock(&sdp->sd_ordered_lock);
	61	}
	62	}
2e9eeaa1	63
45138990	64	extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
2e9eeaa1	65	extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
b3b94faa	66
24972557	67	extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
ed4878e8	68	extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
c1696fb8	69	extern void gfs2_write_log_header(struct gfs2_sbd sdp, struct gfs2_jdesc jd,
7c70b896 BP	70	u64 seq, u32 tail, u32 lblock, u32 flags,
7c70b896 BP	71	int op_flags);
24972557	72	extern void gfs2_log_flush(struct gfs2_sbd sdp, struct gfs2_glock gl,
c1696fb8	73	u32 type);
ed4878e8	74	extern void gfs2_log_commit(struct gfs2_sbd sdp, struct gfs2_trans trans);
4667a0ec	75	extern void gfs2_ail1_flush(struct gfs2_sbd sdp, struct writeback_control wbc);
2bcd610d	76
ed4878e8	77	extern int gfs2_logd(void *data);
5d054964	78	extern void gfs2_add_revoke(struct gfs2_sbd sdp, struct gfs2_bufdata bd);
fe5e7ba1	79	extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
5d054964	80	extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
b3b94faa DT	81
b3b94faa DT	82	#endif /* __LOG_DOT_H__ */