diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b4d2e957b89f..374bb2f8ccd9 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1681,6 +1681,11 @@ struct btrfs_fs_info { unsigned int update_uuid_tree_gen:1; }; +struct btrfs_subvolume_writers { + struct percpu_counter counter; + wait_queue_head_t wait; +}; + /* * in ram representation of the tree. extent_root is used for all allocations * and for the extent tree extent_root root. @@ -1829,6 +1834,8 @@ struct btrfs_root { * manipulation with the read-only status via SUBVOL_SETFLAGS */ int send_in_progress; + struct btrfs_subvolume_writers *subv_writers; + atomic_t will_be_snapshoted; }; struct btrfs_ioctl_defrag_range_args { @@ -3353,6 +3360,9 @@ int btrfs_init_space_info(struct btrfs_fs_info *fs_info); int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); int __get_raid_index(u64 flags); + +int btrfs_start_nocow_write(struct btrfs_root *root); +void btrfs_end_nocow_write(struct btrfs_root *root); /* ctree.c */ int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, int level, int *slot); |