/* Have writers, use proper subpage helper to end it */
btrfs_page_end_writer_lock(fs_info, page, start, len);
}
+
+#define GET_SUBPAGE_BITMAP(subpage, subpage_info, name, dst) \
+ bitmap_cut(dst, subpage->bitmaps, 0, \
+ subpage_info->name##_offset, subpage_info->bitmap_nr_bits)
+
+void __cold btrfs_subpage_dump_bitmap(const struct btrfs_fs_info *fs_info,
+ struct page *page, u64 start, u32 len)
+{
+ struct btrfs_subpage_info *subpage_info = fs_info->subpage_info;
+ struct btrfs_subpage *subpage;
+ unsigned long uptodate_bitmap;
+ unsigned long error_bitmap;
+ unsigned long dirty_bitmap;
+ unsigned long writeback_bitmap;
+ unsigned long ordered_bitmap;
+ unsigned long checked_bitmap;
+ unsigned long flags;
+
+ ASSERT(PagePrivate(page) && page->private);
+ ASSERT(subpage_info);
+ subpage = (struct btrfs_subpage *)page->private;
+
+ spin_lock_irqsave(&subpage->lock, flags);
+ GET_SUBPAGE_BITMAP(subpage, subpage_info, uptodate, &uptodate_bitmap);
+ GET_SUBPAGE_BITMAP(subpage, subpage_info, error, &error_bitmap);
+ GET_SUBPAGE_BITMAP(subpage, subpage_info, dirty, &dirty_bitmap);
+ GET_SUBPAGE_BITMAP(subpage, subpage_info, writeback, &writeback_bitmap);
+ GET_SUBPAGE_BITMAP(subpage, subpage_info, ordered, &ordered_bitmap);
+ GET_SUBPAGE_BITMAP(subpage, subpage_info, checked, &checked_bitmap);
+ spin_unlock_irqrestore(&subpage->lock, flags);
+
+ dump_page(page, "btrfs subpage dump");
+ btrfs_warn(fs_info,
+"start=%llu len=%u page=%llu, bitmaps uptodate=%*pbl error=%*pbl dirty=%*pbl writeback=%*pbl ordered=%*pbl checked=%*pbl",
+ start, len, page_offset(page),
+ subpage_info->bitmap_nr_bits, &uptodate_bitmap,
+ subpage_info->bitmap_nr_bits, &error_bitmap,
+ subpage_info->bitmap_nr_bits, &dirty_bitmap,
+ subpage_info->bitmap_nr_bits, &writeback_bitmap,
+ subpage_info->bitmap_nr_bits, &ordered_bitmap,
+ subpage_info->bitmap_nr_bits, &checked_bitmap);
+}