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
  22 static 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
  34 static 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
  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;
  45         }
  46         sdp->sd_log_head = sdp->sd_log_tail = value;
  47 }
  48
  49 static 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 (list_empty(&ip->i_ordered)) {
  57                 spin_lock(&sdp->sd_ordered_lock);
  58                 if (list_empty(&ip->i_ordered))
  59                         list_add(&ip->i_ordered, &sdp->sd_log_ordered);
  60                 spin_unlock(&sdp->sd_ordered_lock);
  61         }
  62 }
  63
  64 extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
  65 extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
  66 extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
  67 extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
  68 extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
  69 extern 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);
  72 extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
  73                            u32 type);
  74 extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
  75 extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
  76 extern void log_flush_wait(struct gfs2_sbd *sdp);
  77
  78 extern int gfs2_logd(void *data);
  79 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
  80 extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
  81 extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
  82
  83 #endif /* __LOG_DOT_H__ */