LXR linux/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
  22struct btrfs_ioctl_dev_replace_args;
  23
  24int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info);
  25int btrfs_run_dev_replace(struct btrfs_trans_handle *trans,
  26                          struct btrfs_fs_info *fs_info);
  27void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info);
  28int btrfs_dev_replace_by_ioctl(struct btrfs_fs_info *fs_info,
  29                            struct btrfs_ioctl_dev_replace_args *args);
  30int 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);
  33void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info,
  34                              struct btrfs_ioctl_dev_replace_args *args);
  35int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info,
  36                             struct btrfs_ioctl_dev_replace_args *args);
  37void btrfs_dev_replace_suspend_for_unmount(struct btrfs_fs_info *fs_info);
  38int btrfs_resume_dev_replace_async(struct btrfs_fs_info *fs_info);
  39int btrfs_dev_replace_is_ongoing(struct btrfs_dev_replace *dev_replace);
  40void btrfs_dev_replace_lock(struct btrfs_dev_replace *dev_replace, int rw);
  41void btrfs_dev_replace_unlock(struct btrfs_dev_replace *dev_replace, int rw);
  42void btrfs_dev_replace_set_lock_blocking(struct btrfs_dev_replace *dev_replace);
  43void btrfs_dev_replace_clear_lock_blocking(
  44                                        struct btrfs_dev_replace *dev_replace);
  45
  46static inline void btrfs_dev_replace_stats_inc(atomic64_t *stat_value)
  47{
  48        atomic64_inc(stat_value);
  49}
  50#endif
  51