root/fs/gfs2/log.h

INCLUDED FROM

DEFINITIONS

1. gfs2_log_lock
2. gfs2_log_unlock
3. gfs2_log_pointers_init
4. gfs2_ordered_add_inode

   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 (!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 }
  63 extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
  64 extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
  65                             unsigned int ssize);
  66 
  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 void gfs2_log_shutdown(struct gfs2_sbd *sdp);
  79 extern int gfs2_logd(void *data);
  80 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
  81 extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
  82 extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
  83 
  84 #endif /* __LOG_DOT_H__ */