dm: rename map_info flush_request to target_request_nr

'target_request_nr' is a more generic name that reflects the fact that
it will be used for both flush and discard support.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 1381cd97b4ed..531a6f2635ae 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -22,7 +22,7 @@ typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t;
 union map_info {
         void *ptr;
         unsigned long long ll;
-        unsigned flush_request;
+        unsigned target_request_nr;
 };
 
 /*
@@ -174,7 +174,7 @@ struct dm_target {
          * A number of zero-length barrier requests that will be submitted
          * to the target for the purpose of flushing cache.
          *
-         * The request number will be placed in union map_info->flush_request.
+         * The request number will be placed in union map_info->target_request_nr.
          * It is a responsibility of the target driver to remap these requests
          * to the real underlying devices.
          */