md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log.

[deliverable/linux.git] / drivers / md / bitmap.h

diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index 3797dea4723a3ea81b52da362ef5101e6d5e382b..a7a11134268d6899a870a26c30308414d992a2d8 100644 (file)
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -222,6 +222,10 @@ struct bitmap {
        unsigned long file_pages; /* number of pages in the file */
        int last_page_size; /* bytes in the last page */
 
+       unsigned long logattrs; /* used when filemap_attr doesn't exist
+                                * because we are working with a dirty_log
+                                */
+
        unsigned long flags;
 
        int allclean;
@@ -243,6 +247,7 @@ struct bitmap {
        wait_queue_head_t behind_wait;
 
        struct sysfs_dirent *sysfs_can_clear;
+
 };
 
 /* the bitmap API */