fs/reiser4/ktxnmgrd.h

   1 /* Copyright 2001, 2002, 2003 by Hans Reiser, licensing governed by
   2  * reiser4/README */
   3
   4 /* Transaction manager daemon. See ktxnmgrd.c for comments. */
   5
   6 #ifndef __KTXNMGRD_H__
   7 #define __KTXNMGRD_H__
   8
   9 #include "txnmgr.h"
  10
  11 #include <linux/fs.h>
  12 #include <linux/wait.h>
  13 #include <linux/completion.h>
  14 #include <linux/spinlock.h>
  15 #include <asm/atomic.h>
  16 #include <linux/sched.h>        /* for struct task_struct */
  17
  18 /* in this structure all data necessary to start up, shut down and communicate
  19  * with ktxnmgrd are kept. */
  20 struct ktxnmgrd_context {
  21         /* wait queue head on which ktxnmgrd sleeps */
  22         wait_queue_head_t wait;
  23         /* spin lock protecting all fields of this structure */
  24         spinlock_t guard;
  25         /* timeout of sleeping on ->wait */
  26         signed long timeout;
  27         /* kernel thread running ktxnmgrd */
  28         struct task_struct *tsk;
  29         /* list of all file systems served by this ktxnmgrd */
  30         struct list_head queue;
  31         /* should ktxnmgrd repeat scanning of atoms? */
  32         unsigned int rescan:1;
  33 };
  34
  35 extern int reiser4_init_ktxnmgrd(struct super_block *);
  36 extern void reiser4_done_ktxnmgrd(struct super_block *);
  37
  38 extern void ktxnmgrd_kick(txn_mgr * mgr);
  39 extern int is_current_ktxnmgrd(void);
  40
  41 /* __KTXNMGRD_H__ */
  42 #endif
  43
  44 /* Make Linus happy.
  45    Local variables:
  46    c-indentation-style: "K&R"
  47    mode-name: "LC"
  48    c-basic-offset: 8
  49    tab-width: 8
  50    fill-column: 120
  51    End:
  52 */