+static void btrfs_set_max_workers(struct btrfs_workers *workers, int new_limit)
+{
+ spin_lock_irq(&workers->lock);
+ workers->max_workers = new_limit;
+ spin_unlock_irq(&workers->lock);
+}
+
+static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info,
+ int new_pool_size, int old_pool_size)
+{
+ if (new_pool_size == old_pool_size)
+ return;
+
+ fs_info->thread_pool_size = new_pool_size;
+
+ printk(KERN_INFO "btrfs: resize thread pool %d -> %d\n",
+ old_pool_size, new_pool_size);
+
+ btrfs_set_max_workers(&fs_info->generic_worker, new_pool_size);
+ btrfs_set_max_workers(&fs_info->workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->delalloc_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->submit_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->caching_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->fixup_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->endio_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->endio_meta_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->endio_meta_write_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->endio_write_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->endio_freespace_worker, new_pool_size);
+ btrfs_set_max_workers(&fs_info->delayed_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->readahead_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->scrub_workers, new_pool_size);
+}
+