dm log: split suspend

There are now two phases to a suspend in device-mapper -
presuspend and postsuspend.  This patch removes the
single 'suspend' in the logging API and replaces it with
'presuspend' and 'postsuspend' functions to align it
better with core device-mapper.

A subsequent patch will make use of 'presuspend'.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/md/dm-log.h b/drivers/md/dm-log.h
index 86a301c8daf1..3fae87eb5963 100644
--- a/drivers/md/dm-log.h
+++ b/drivers/md/dm-log.h
@@ -32,7 +32,8 @@ struct dirty_log_type {
          * There are times when we don't want the log to touch
          * the disk.
          */
-        int (*suspend)(struct dirty_log *log);
+        int (*presuspend)(struct dirty_log *log);
+        int (*postsuspend)(struct dirty_log *log);
         int (*resume)(struct dirty_log *log);
 
         /*