drivers/md/multipath.h

   1 #ifndef _MULTIPATH_H
   2 #define _MULTIPATH_H
   3
   4 struct multipath_info {
   5         struct md_rdev  *rdev;
   6 };
   7
   8 struct mpconf {
   9         struct mddev                    *mddev;
  10         struct multipath_info   *multipaths;
  11         int                     raid_disks;
  12         spinlock_t              device_lock;
  13         struct list_head        retry_list;
  14
  15         mempool_t               *pool;
  16 };
  17
  18 /*
  19  * this is our 'private' 'collective' MULTIPATH buffer head.
  20  * it contains information about what kind of IO operations were started
  21  * for this MULTIPATH operation, and about their status:
  22  */
  23
  24 struct multipath_bh {
  25         struct mddev                    *mddev;
  26         struct bio              *master_bio;
  27         struct bio              bio;
  28         int                     path;
  29         struct list_head        retry_list;
  30 };
  31 #endif