Merge branch 'for-chris' of git://repo.or.cz/linux-btrfs-devel into integration

[mirror_ubuntu-bionic-kernel.git] / fs / btrfs / volumes.h

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index c1701ec9d49fd6679e1f6264ea8c8733b4fd1b65..19ac95048b88596e44b6dd667b050fb796ab20e7 100644 (file)
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -186,6 +186,51 @@ struct map_lookup {
 #define map_lookup_size(n) (sizeof(struct map_lookup) + \
                            (sizeof(struct btrfs_bio_stripe) * (n)))
 
+/*
+ * Restriper's general type filter
+ */
+#define BTRFS_BALANCE_DATA             (1ULL << 0)
+#define BTRFS_BALANCE_SYSTEM           (1ULL << 1)
+#define BTRFS_BALANCE_METADATA         (1ULL << 2)
+
+#define BTRFS_BALANCE_TYPE_MASK                (BTRFS_BALANCE_DATA |       \
+                                        BTRFS_BALANCE_SYSTEM |     \
+                                        BTRFS_BALANCE_METADATA)
+
+#define BTRFS_BALANCE_FORCE            (1ULL << 3)
+#define BTRFS_BALANCE_RESUME           (1ULL << 4)
+
+/*
+ * Balance filters
+ */
+#define BTRFS_BALANCE_ARGS_PROFILES    (1ULL << 0)
+#define BTRFS_BALANCE_ARGS_USAGE       (1ULL << 1)
+#define BTRFS_BALANCE_ARGS_DEVID       (1ULL << 2)
+#define BTRFS_BALANCE_ARGS_DRANGE      (1ULL << 3)
+#define BTRFS_BALANCE_ARGS_VRANGE      (1ULL << 4)
+
+/*
+ * Profile changing flags.  When SOFT is set we won't relocate chunk if
+ * it already has the target profile (even though it may be
+ * half-filled).
+ */
+#define BTRFS_BALANCE_ARGS_CONVERT     (1ULL << 8)
+#define BTRFS_BALANCE_ARGS_SOFT                (1ULL << 9)
+
+struct btrfs_balance_args;
+struct btrfs_balance_progress;
+struct btrfs_balance_control {
+       struct btrfs_fs_info *fs_info;
+
+       struct btrfs_balance_args data;
+       struct btrfs_balance_args meta;
+       struct btrfs_balance_args sys;
+
+       u64 flags;
+
+       struct btrfs_balance_progress stat;
+};
+
 int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,
                                   u64 end, u64 *length);
 
@@ -228,7 +273,11 @@ struct btrfs_device *btrfs_find_device(struct btrfs_root *root, u64 devid,
                                       u8 *uuid, u8 *fsid);
 int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
 int btrfs_init_new_device(struct btrfs_root *root, char *path);
-int btrfs_balance(struct btrfs_root *dev_root);
+int btrfs_balance(struct btrfs_balance_control *bctl,
+                 struct btrfs_ioctl_balance_args *bargs);
+int btrfs_recover_balance(struct btrfs_root *tree_root);
+int btrfs_pause_balance(struct btrfs_fs_info *fs_info);
+int btrfs_cancel_balance(struct btrfs_fs_info *fs_info);
 int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset);
 int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
                         u64 *start, u64 *max_avail);