diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index b8e342f..8f25f62 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -114,7 +114,7 @@
 			wake_up_process(io->sleeper);
 
 		else {
-			int r = io->error;
+			unsigned long r = io->error;
 			io_notify_fn fn = io->callback;
 			void *context = io->context;
 
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 5160587..762cb08 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -753,7 +753,7 @@
  * are in the no-sync state.  We have to recover these by
  * recopying from the default mirror to all the others.
  *---------------------------------------------------------------*/
-static void recovery_complete(int read_err, unsigned int write_err,
+static void recovery_complete(int read_err, unsigned long write_err,
 			      void *context)
 {
 	struct region *reg = (struct region *)context;
@@ -767,7 +767,7 @@
 	}
 
 	if (write_err) {
-		DMERR_LIMIT("Write error during recovery (error = 0x%x)",
+		DMERR_LIMIT("Write error during recovery (error = 0x%lx)",
 			    write_err);
 		/*
 		 * Bits correspond to devices (excluding default mirror).
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index ae24eab..4dc8a43c 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -804,7 +804,7 @@
  * Called when the copy I/O has finished.  kcopyd actually runs
  * this code so don't block.
  */
-static void copy_callback(int read_err, unsigned int write_err, void *context)
+static void copy_callback(int read_err, unsigned long write_err, void *context)
 {
 	struct dm_snap_pending_exception *pe = context;
 	struct dm_snapshot *s = pe->snap;
diff --git a/drivers/md/kcopyd.c b/drivers/md/kcopyd.c
index f3831f3..e76b52a 100644
--- a/drivers/md/kcopyd.c
+++ b/drivers/md/kcopyd.c
@@ -169,7 +169,7 @@
 	 * Error state of the job.
 	 */
 	int read_err;
-	unsigned int write_err;
+	unsigned long write_err;
 
 	/*
 	 * Either READ or WRITE
@@ -293,7 +293,7 @@
 {
 	void *context = job->context;
 	int read_err = job->read_err;
-	unsigned int write_err = job->write_err;
+	unsigned long write_err = job->write_err;
 	kcopyd_notify_fn fn = job->fn;
 	struct kcopyd_client *kc = job->kc;
 
@@ -396,7 +396,7 @@
 		if (r < 0) {
 			/* error this rogue job */
 			if (job->rw == WRITE)
-				job->write_err = (unsigned int) -1;
+				job->write_err = (unsigned long) -1L;
 			else
 				job->read_err = 1;
 			push(&_complete_jobs, job);
@@ -448,8 +448,8 @@
 }
 
 #define SUB_JOB_SIZE 128
-static void segment_complete(int read_err,
-			     unsigned int write_err, void *context)
+static void segment_complete(int read_err, unsigned long write_err,
+			     void *context)
 {
 	/* FIXME: tidy this function */
 	sector_t progress = 0;
diff --git a/drivers/md/kcopyd.h b/drivers/md/kcopyd.h
index 4621ea0..4845f2a 100644
--- a/drivers/md/kcopyd.h
+++ b/drivers/md/kcopyd.h
@@ -32,8 +32,8 @@
  * read_err is a boolean,
  * write_err is a bitset, with 1 bit for each destination region
  */
-typedef void (*kcopyd_notify_fn)(int read_err,
-				 unsigned int write_err, void *context);
+typedef void (*kcopyd_notify_fn)(int read_err, unsigned long write_err,
+				 void *context);
 
 int kcopyd_copy(struct kcopyd_client *kc, struct io_region *from,
 		unsigned int num_dests, struct io_region *dests,