mirror of https://gitee.com/openkylin/linux.git
110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/*
|
|
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
|
* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef __LOPS_DOT_H__
|
|
#define __LOPS_DOT_H__
|
|
|
|
#include <linux/list.h>
|
|
#include "incore.h"
|
|
|
|
#define BUF_OFFSET \
|
|
((sizeof(struct gfs2_log_descriptor) + sizeof(__be64) - 1) & \
|
|
~(sizeof(__be64) - 1))
|
|
#define DATABUF_OFFSET \
|
|
((sizeof(struct gfs2_log_descriptor) + (2 * sizeof(__be64) - 1)) & \
|
|
~(2 * sizeof(__be64) - 1))
|
|
|
|
extern const struct gfs2_log_operations gfs2_glock_lops;
|
|
extern const struct gfs2_log_operations gfs2_buf_lops;
|
|
extern const struct gfs2_log_operations gfs2_revoke_lops;
|
|
extern const struct gfs2_log_operations gfs2_databuf_lops;
|
|
|
|
extern const struct gfs2_log_operations *gfs2_log_ops[];
|
|
extern u64 gfs2_log_bmap(struct gfs2_sbd *sdp);
|
|
extern void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page,
|
|
unsigned size, unsigned offset, u64 blkno);
|
|
extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
|
|
extern void gfs2_log_submit_bio(struct bio **biop, int opf);
|
|
extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
|
|
extern int gfs2_find_jhead(struct gfs2_jdesc *jd,
|
|
struct gfs2_log_header_host *head);
|
|
|
|
static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
|
|
{
|
|
unsigned int limit;
|
|
|
|
limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64);
|
|
return limit;
|
|
}
|
|
|
|
static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
|
|
{
|
|
unsigned int limit;
|
|
|
|
limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64));
|
|
return limit;
|
|
}
|
|
|
|
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, unsigned int 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__ */
|
|
|