btrfs: Remove fs_info from btrfs_assign_next_active_device

It can be referenced from the passed 'device' argument which is always
a well-formed device.
Signed-off-by: NNikolay Borisov <nborisov@suse.com>
Reviewed-by: NLu Fengqi <lufq.fnst@cn.fujitsu.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/dev-replace.c

@@ -658,7 +658,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
 	tgt_device->commit_total_bytes = src_device->commit_total_bytes;
 	tgt_device->commit_bytes_used = src_device->bytes_used;
 
-	btrfs_assign_next_active_device(fs_info, src_device, tgt_device);
+	btrfs_assign_next_active_device(src_device, tgt_device);
 
 	list_add(&tgt_device->dev_alloc_list, &fs_info->fs_devices->alloc_list);
 	fs_info->fs_devices->rw_devices++;

fs/btrfs/volumes.c

@@ -1833,9 +1833,10 @@ static struct btrfs_device * btrfs_find_next_active_device(
  * where this function called, there should be always be another device (or
  * this_dev) which is active.
  */
-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)
 {
+	struct btrfs_fs_info *fs_info = device->fs_info;
 	struct btrfs_device *next_device;
 
 	if (this_dev)
@@ -1945,7 +1946,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info, const char *device_path,
 	if (test_bit(BTRFS_DEV_STATE_MISSING, &device->dev_state))
 		cur_devices->missing_devices--;
 
-	btrfs_assign_next_active_device(fs_info, device, NULL);
+	btrfs_assign_next_active_device(device, NULL);
 
 	if (device->bdev) {
 		cur_devices->open_devices--;
@@ -2077,7 +2078,7 @@ void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
 
 	fs_devices->num_devices--;
 
-	btrfs_assign_next_active_device(fs_info, tgtdev, NULL);
+	btrfs_assign_next_active_device(tgtdev, NULL);
 
 	list_del_rcu(&tgtdev->dev_list);
 

fs/btrfs/volumes.h

@@ -407,8 +407,8 @@ 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);