3856 	struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;  in find_next_dirty_byte()  local
3876 	spin_lock_irqsave(&subpage->lock, flags);  in find_next_dirty_byte()
3877 	dirty_bitmap = subpage->dirty_bitmap;  in find_next_dirty_byte()
3878 	spin_unlock_irqrestore(&subpage->lock, flags);  in find_next_dirty_byte()
4611 		struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;  in submit_eb_subpage()  local
4625 		spin_lock_irqsave(&subpage->lock, flags);  in submit_eb_subpage()
4626 		if (!((1 << bit_start) & subpage->dirty_bitmap)) {  in submit_eb_subpage()
4627 			spin_unlock_irqrestore(&subpage->lock, flags);  in submit_eb_subpage()
4641 		spin_unlock_irqrestore(&subpage->lock, flags);  in submit_eb_subpage()
5695 	struct btrfs_subpage *subpage;  in page_range_has_eb()  local
5700 		subpage = (struct btrfs_subpage *)page->private;  in page_range_has_eb()
5701 		if (atomic_read(&subpage->eb_refs))  in page_range_has_eb()
5707 		if (atomic_read(&subpage->readers))  in page_range_has_eb()
6389 		bool subpage = eb->fs_info->sectorsize < PAGE_SIZE;  in set_extent_buffer_dirty()  local
6402 		if (subpage)  in set_extent_buffer_dirty()
6407 		if (subpage)  in set_extent_buffer_dirty()