fs/btrfs/dev-replace.h

   1 /*
   2  * Copyright (C) STRATO AG 2012.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18
  19 #if !defined(__BTRFS_DEV_REPLACE__)
  20 #define __BTRFS_DEV_REPLACE__
  21
  22 struct btrfs_ioctl_dev_replace_args;
  23
  24 int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info);
  25 int btrfs_run_dev_replace(struct btrfs_trans_handle *trans,
  26                           struct btrfs_fs_info *fs_info);
  27 void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info);
  28 int btrfs_dev_replace_by_ioctl(struct btrfs_fs_info *fs_info,
  29                             struct btrfs_ioctl_dev_replace_args *args);
  30 int btrfs_dev_replace_start(struct btrfs_fs_info *fs_info,
  31                 const char *tgtdev_name, u64 srcdevid, const char *srcdev_name,
  32                 int read_src);
  33 void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info,
  34                               struct btrfs_ioctl_dev_replace_args *args);
  35 int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info,
  36                              struct btrfs_ioctl_dev_replace_args *args);
  37 void btrfs_dev_replace_suspend_for_unmount(struct btrfs_fs_info *fs_info);
  38 int btrfs_resume_dev_replace_async(struct btrfs_fs_info *fs_info);
  39 int btrfs_dev_replace_is_ongoing(struct btrfs_dev_replace *dev_replace);
  40 void btrfs_dev_replace_lock(struct btrfs_dev_replace *dev_replace, int rw);
  41 void btrfs_dev_replace_unlock(struct btrfs_dev_replace *dev_replace, int rw);
  42 void btrfs_dev_replace_set_lock_blocking(struct btrfs_dev_replace *dev_replace);
  43 void btrfs_dev_replace_clear_lock_blocking(
  44                                         struct btrfs_dev_replace *dev_replace);
  45
  46 static inline void btrfs_dev_replace_stats_inc(atomic64_t *stat_value)
  47 {
  48         atomic64_inc(stat_value);
  49 }
  50 #endif