/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
 */

#ifndef __LOPS_DOT_H__
#define __LOPS_DOT_H__

#include <linux/list.h>
#include "incore.h"

extern const struct gfs2_log_operations *gfs2_log_ops[];

void gfs2_log_incr_head(struct gfs2_sbd *sdp);
u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn);
void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
                    struct page *page, unsigned size, unsigned offset,
                    u64 blkno, blk_opf_t opf);
void gfs2_log_submit_write(struct bio **biop);
void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
int gfs2_find_jhead(struct gfs2_jdesc *jd,
                    struct gfs2_log_header_host *head);
void gfs2_drain_revokes(struct gfs2_sbd *sdp);

static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
{
        return sdp->sd_ldptrs;
}

static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
{
        return sdp->sd_ldptrs / 2;
}

static inline void lops_before_commit(struct gfs2_sbd *sdp,
                                      struct gfs2_trans *tr)
{
        int x;
        for (x = 0; gfs2_log_ops[x]; x++)
                if (gfs2_log_ops[x]->lo_before_commit)
                        gfs2_log_ops[x]->lo_before_commit(sdp, tr);
}

static inline void lops_after_commit(struct gfs2_sbd *sdp,
                                     struct gfs2_trans *tr)
{
        int x;
        for (x = 0; gfs2_log_ops[x]; x++)
                if (gfs2_log_ops[x]->lo_after_commit)
                        gfs2_log_ops[x]->lo_after_commit(sdp, tr);
}

static inline void lops_before_scan(struct gfs2_jdesc *jd,
                                    struct gfs2_log_header_host *head,
                                    unsigned int pass)
{
        int x;
        for (x = 0; gfs2_log_ops[x]; x++)
                if (gfs2_log_ops[x]->lo_before_scan)
                        gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
}

static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start,
                                     struct gfs2_log_descriptor *ld,
                                     __be64 *ptr,
                                     unsigned int pass)
{
        int x, error;
        for (x = 0; gfs2_log_ops[x]; x++)
                if (gfs2_log_ops[x]->lo_scan_elements) {
                        error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
                                                                  ld, ptr, pass);
                        if (error)
                                return error;
                }

        return 0;
}

static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
                                   unsigned int pass)
{
        int x;
        for (x = 0; gfs2_log_ops[x]; x++)
                if (gfs2_log_ops[x]->lo_before_scan)
                        gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
}

#endif /* __LOPS_DOT_H__ */