fs/gfs2/lm.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License version 2.
   8  */
   9
  10 #ifndef __LM_DOT_H__
  11 #define __LM_DOT_H__
  12
  13 struct gfs2_sbd;
  14
  15 #define GFS2_MIN_LVB_SIZE 32
  16
  17 int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent);
  18 void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp);
  19 void gfs2_lm_unmount(struct gfs2_sbd *sdp);
  20 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
  21                                 __attribute__ ((format(printf, 2, 3)));
  22 int gfs2_lm_get_lock(struct gfs2_sbd *sdp, struct lm_lockname *name,
  23                      void **lockp);
  24 void gfs2_lm_put_lock(struct gfs2_sbd *sdp, void *lock);
  25 unsigned int gfs2_lm_lock(struct gfs2_sbd *sdp, void *lock,
  26                          unsigned int cur_state, unsigned int req_state,
  27                          unsigned int flags);
  28 unsigned int gfs2_lm_unlock(struct gfs2_sbd *sdp, void *lock,
  29                            unsigned int cur_state);
  30 void gfs2_lm_cancel(struct gfs2_sbd *sdp, void *lock);
  31 int gfs2_lm_hold_lvb(struct gfs2_sbd *sdp, void *lock, char **lvbp);
  32 void gfs2_lm_unhold_lvb(struct gfs2_sbd *sdp, void *lock, char *lvb);
  33 int gfs2_lm_plock_get(struct gfs2_sbd *sdp, struct lm_lockname *name,
  34                       struct file *file, struct file_lock *fl);
  35 int gfs2_lm_plock(struct gfs2_sbd *sdp, struct lm_lockname *name,
  36                   struct file *file, int cmd, struct file_lock *fl);
  37 int gfs2_lm_punlock(struct gfs2_sbd *sdp, struct lm_lockname *name,
  38                     struct file *file, struct file_lock *fl);
  39 void gfs2_lm_recovery_done(struct gfs2_sbd *sdp, unsigned int jid,
  40                            unsigned int message);
  41
  42 #endif /* __LM_DOT_H__ */