Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
  dm snapshot: fix on disk chunk size validation
  dm exception store: split set_chunk_size
  dm snapshot: fix header corruption race on invalidation
  dm snapshot: refactor zero_disk_area to use chunk_io
  dm log: userspace add luid to distinguish between concurrent log instances
  dm raid1: do not allow log_failure variable to unset after being set
  dm log: remove incorrect field from userspace table output
  dm log: fix userspace status output
  dm stripe: expose correct io hints
  dm table: add more context to terse warning messages
  dm table: fix queue_limit checking device iterator
  dm snapshot: implement iterate devices
  dm multipath: fix oops when request based io fails when no paths

1 files changed, 10 insertions, 5 deletions

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 8a311ea0d441..b4845b14740d 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -738,16 +738,22 @@ static void rq_completed(struct mapped_device *md, int run_queue)
         dm_put(md);
 }
 
+static void free_rq_clone(struct request *clone)
+{
+        struct dm_rq_target_io *tio = clone->end_io_data;
+
+        blk_rq_unprep_clone(clone);
+        free_rq_tio(tio);
+}
+
 static void dm_unprep_request(struct request *rq)
 {
         struct request *clone = rq->special;
-        struct dm_rq_target_io *tio = clone->end_io_data;
 
         rq->special = NULL;
         rq->cmd_flags &= ~REQ_DONTPREP;
 
-        blk_rq_unprep_clone(clone);
-        free_rq_tio(tio);
+        free_rq_clone(clone);
 }
 
 /*
@@ -825,8 +831,7 @@ static void dm_end_request(struct request *clone, int error)
                         rq->sense_len = clone->sense_len;
         }
 
-        BUG_ON(clone->bio);
-        free_rq_tio(tio);
+        free_rq_clone(clone);
 
         blk_end_request_all(rq, error);