fs: unexport buffer_check_dirty_writeback

buffer_check_dirty_writeback is only used by the block device aops,
remove the export.

Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/fs/buffer.c b/fs/buffer.c
index 9e1e2add541e07a593bcc743d73eb05ed51bfbd9..eb14fbaa7d35f7d34abbbde41357a8d02d141590 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -111,7 +111,6 @@ void buffer_check_dirty_writeback(struct folio *folio,
                bh = bh->b_this_page;
        } while (bh != head);
 }
-EXPORT_SYMBOL(buffer_check_dirty_writeback);
 
 /*
  * Block until a buffer comes unlocked.  This doesn't stop it