btrfs: Introduce mount time chunk <-> dev extent mapping check

[sfrench/cifs-2.6.git] / fs / btrfs / volumes.h

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 5139ec8daf4cbfbace23b714fa783af33107870e..23e9285d88deb1a44a486a491066337aa9cf6074 100644 (file)
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -11,6 +11,8 @@
 #include <linux/btrfs.h>
 #include "async-thread.h"
 
+#define BTRFS_MAX_DATA_CHUNK_SIZE      (10ULL * SZ_1G)
+
 extern struct mutex uuid_mutex;
 
 #define BTRFS_STRIPE_LEN       SZ_64K
@@ -343,6 +345,7 @@ struct map_lookup {
        u64 stripe_len;
        int num_stripes;
        int sub_stripes;
+       int verified_stripes; /* For mount time dev extent verification */
        struct btrfs_bio_stripe stripes[];
 };
 
@@ -382,8 +385,6 @@ static inline enum btrfs_map_op btrfs_op(struct bio *bio)
        }
 }
 
-int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,
-                                  u64 end, u64 *length);
 void btrfs_get_bbio(struct btrfs_bio *bbio);
 void btrfs_put_bbio(struct btrfs_bio *bbio);
 int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
@@ -396,20 +397,19 @@ int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start,
                     u64 physical, u64 **logical, int *naddrs, int *stripe_len);
 int btrfs_read_sys_array(struct btrfs_fs_info *fs_info);
 int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info);
-int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
-                     struct btrfs_fs_info *fs_info, u64 type);
+int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, u64 type);
 void btrfs_mapping_init(struct btrfs_mapping_tree *tree);
 void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree);
 blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
                           int mirror_num, int async_submit);
 int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
                       fmode_t flags, void *holder);
-int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,
-                         struct btrfs_fs_devices **fs_devices_ret);
+struct btrfs_device *btrfs_scan_one_device(const char *path,
+                                          fmode_t flags, void *holder);
 int btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
 void btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices, int step);
-void btrfs_assign_next_active_device(struct btrfs_fs_info *fs_info,
-               struct btrfs_device *device, struct btrfs_device *this_dev);
+void btrfs_assign_next_active_device(struct btrfs_device *device,
+                                    struct btrfs_device *this_dev);
 int btrfs_find_device_missing_or_by_path(struct btrfs_fs_info *fs_info,
                                         const char *device_path,
                                         struct btrfs_device **device);
@@ -453,22 +453,18 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info);
 int btrfs_init_dev_stats(struct btrfs_fs_info *fs_info);
 int btrfs_run_dev_stats(struct btrfs_trans_handle *trans,
                        struct btrfs_fs_info *fs_info);
-void btrfs_rm_dev_replace_remove_srcdev(struct btrfs_fs_info *fs_info,
-                                       struct btrfs_device *srcdev);
+void btrfs_rm_dev_replace_remove_srcdev(struct btrfs_device *srcdev);
 void btrfs_rm_dev_replace_free_srcdev(struct btrfs_fs_info *fs_info,
                                      struct btrfs_device *srcdev);
-void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
-                                     struct btrfs_device *tgtdev);
+void btrfs_destroy_dev_replace_tgtdev(struct btrfs_device *tgtdev);
 void btrfs_scratch_superblocks(struct block_device *bdev, const char *device_path);
 int btrfs_is_parity_mirror(struct btrfs_fs_info *fs_info,
                           u64 logical, u64 len);
 unsigned long btrfs_full_stripe_len(struct btrfs_fs_info *fs_info,
                                    u64 logical);
 int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
-                               struct btrfs_fs_info *fs_info,
-                               u64 chunk_offset, u64 chunk_size);
-int btrfs_remove_chunk(struct btrfs_trans_handle *trans,
-                      struct btrfs_fs_info *fs_info, u64 chunk_offset);
+                            u64 chunk_offset, u64 chunk_size);
+int btrfs_remove_chunk(struct btrfs_trans_handle *trans, u64 chunk_offset);
 
 static inline void btrfs_dev_stat_inc(struct btrfs_device *dev,
                                      int index)
@@ -560,4 +556,7 @@ void btrfs_reset_fs_info_ptr(struct btrfs_fs_info *fs_info);
 bool btrfs_check_rw_degradable(struct btrfs_fs_info *fs_info,
                                        struct btrfs_device *failing_dev);
 
+int btrfs_bg_type_to_factor(u64 flags);
+int btrfs_verify_dev_extents(struct btrfs_fs_info *fs_info);
+
 #endif