md/bitmap: store bytes in file rather than just in last page.

This number is more generally useful, and bytes-in-last-page is
easily extracted from it.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index 162ab095b866..26689260e179 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -197,7 +197,7 @@ struct bitmap {
                 unsigned long *filemap_attr;    /* attributes associated
                                                  * w/ filemap pages */
                 unsigned long file_pages;       /* number of pages in the file*/
-                int last_page_size;             /* bytes in the last page */
+                unsigned long bytes;            /* total bytes in the bitmap */
         } storage;
 
         unsigned long flags;