drivers/md/multipath.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _MULTIPATH_H
   3 #define _MULTIPATH_H
   4
   5 struct multipath_info {
   6         struct md_rdev  *rdev;
   7 };
   8
   9 struct mpconf {
  10         struct mddev                    *mddev;
  11         struct multipath_info   *multipaths;
  12         int                     raid_disks;
  13         spinlock_t              device_lock;
  14         struct list_head        retry_list;
  15
  16         mempool_t               *pool;
  17 };
  18
  19 /*
  20  * this is our 'private' 'collective' MULTIPATH buffer head.
  21  * it contains information about what kind of IO operations were started
  22  * for this MULTIPATH operation, and about their status:
  23  */
  24
  25 struct multipath_bh {
  26         struct mddev                    *mddev;
  27         struct bio              *master_bio;
  28         struct bio              bio;
  29         int                     path;
  30         struct list_head        retry_list;
  31 };
  32 #endif