LXR linux/fs/gfs2/log.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   4 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   5 */
   6
   7#ifndef __LOG_DOT_H__
   8#define __LOG_DOT_H__
   9
  10#include <linux/list.h>
  11#include <linux/spinlock.h>
  12#include <linux/writeback.h>
  13#include "incore.h"
  14#include "inode.h"
  15
  16/**
  17 * gfs2_log_lock - acquire the right to mess with the log manager
  18 * @sdp: the filesystem
  19 *
  20 */
  21
  22static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
  23__acquires(&sdp->sd_log_lock)
  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
  34static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
  35__releases(&sdp->sd_log_lock)
  36{
  37        spin_unlock(&sdp->sd_log_lock);
  38}
  39
  40static 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;
  45        }
  46        sdp->sd_log_head = sdp->sd_log_tail = value;
  47}
  48
  49static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
  50{
  51        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
  52
  53        if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
  54                return;
  55
  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))
  59                        list_add(&ip->i_ordered, &sdp->sd_log_ordered);
  60                spin_unlock(&sdp->sd_ordered_lock);
  61        }
  62}
  63extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
  64extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
  65                            unsigned int ssize);
  66
  67extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
  68extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
  69extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
  70                                  u64 seq, u32 tail, u32 lblock, u32 flags,
  71                                  int op_flags);
  72extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
  73                           u32 type);
  74extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
  75extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
  76
  77extern void gfs2_log_shutdown(struct gfs2_sbd *sdp);
  78extern int gfs2_logd(void *data);
  79extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
  80extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
  81
  82#endif /* __LOG_DOT_H__ */
  83