Btrfs: assert page dirty bit on extent buffer pages

Just in case that someone breaks the rule that pages are dirty as long
as eb is dirty. The next patch will dirty the pages conditionally.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 43bf4ec891c6e2a8cca89f2347d96a7e00b84def..ce2aa692b4449e5af5f27233ed89d569d927b22d 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -5176,6 +5176,12 @@ int set_extent_buffer_dirty(struct extent_buffer *eb)
 
        for (i = 0; i < num_pages; i++)
                set_page_dirty(eb->pages[i]);
+
+#ifdef CONFIG_BTRFS_DEBUG
+       for (i = 0; i < num_pages; i++)
+               ASSERT(PageDirty(eb->pages[i]));
+#endif
+
        return was_dirty;
 }