1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index a7e6903866fd..3829bee2302a 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -255,6 +255,12 @@ struct dm_target {
         unsigned num_write_same_bios;
 
         /*
+         * The number of WRITE ZEROES bios that will be submitted to the target.
+         * The bio number can be accessed with dm_bio_get_target_bio_nr.
+         */
+        unsigned num_write_zeroes_bios;
+
+        /*
          * The minimum number of extra bytes allocated in each io for the
          * target to use.
          */