5 files changed, 23 insertions, 6 deletions

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 75fe9493e6af..47412ae98fb9 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -939,9 +939,20 @@ void dm_table_postsuspend_targets(struct dm_table *t)
         return suspend_targets(t, 1);
 }
 
-void dm_table_resume_targets(struct dm_table *t)
+int dm_table_resume_targets(struct dm_table *t)
 {
-        int i;
+        int i, r = 0;
+
+        for (i = 0; i < t->num_targets; i++) {
+                struct dm_target *ti = t->targets + i;
+
+                if (!ti->type->preresume)
+                        continue;
+
+                r = ti->type->preresume(ti);
+                if (r)
+                        return r;
+        }
 
         for (i = 0; i < t->num_targets; i++) {
                 struct dm_target *ti = t->targets + i;
@@ -949,6 +960,8 @@ void dm_table_resume_targets(struct dm_table *t)
                 if (ti->type->resume)
                         ti->type->resume(ti);
         }
+
+        return 0;
 }
 
 int dm_table_any_congested(struct dm_table *t, int bdi_bits)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 883860c3565b..aeb63a3ac330 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1360,7 +1360,9 @@ int dm_resume(struct mapped_device *md)
         if (!map || !dm_table_get_size(map))
                 goto out;
 
-        dm_table_resume_targets(map);
+        r = dm_table_resume_targets(map);
+        if (r)
+                goto out;
 
         down_write(&md->io_lock);
         clear_bit(DMF_BLOCK_IO, &md->flags);
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index fe701c4834fe..a48ec5e3c1f4 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -57,7 +57,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q);
 struct list_head *dm_table_get_devices(struct dm_table *t);
 void dm_table_presuspend_targets(struct dm_table *t);
 void dm_table_postsuspend_targets(struct dm_table *t);
-void dm_table_resume_targets(struct dm_table *t);
+int dm_table_resume_targets(struct dm_table *t);
 int dm_table_any_congested(struct dm_table *t, int bdi_bits);
 void dm_table_unplug_all(struct dm_table *t);
 int dm_table_flush_all(struct dm_table *t);
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index d44a99650af3..8cbc46b8e3db 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -57,6 +57,7 @@ typedef int (*dm_endio_fn) (struct dm_target *ti,
 
 typedef void (*dm_presuspend_fn) (struct dm_target *ti);
 typedef void (*dm_postsuspend_fn) (struct dm_target *ti);
+typedef int (*dm_preresume_fn) (struct dm_target *ti);
 typedef void (*dm_resume_fn) (struct dm_target *ti);
 
 typedef int (*dm_status_fn) (struct dm_target *ti, status_type_t status_type,
@@ -92,6 +93,7 @@ struct target_type {
         dm_endio_fn end_io;
         dm_presuspend_fn presuspend;
         dm_postsuspend_fn postsuspend;
+        dm_preresume_fn preresume;
         dm_resume_fn resume;
         dm_status_fn status;
         dm_message_fn message;
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index b349b768df35..f28b5c87aa6b 100644
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -285,9 +285,9 @@ typedef char ioctl_struct[308];
 #define DM_DEV_SET_GEOMETRY     _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
 
 #define DM_VERSION_MAJOR        4
-#define DM_VERSION_MINOR        8
+#define DM_VERSION_MINOR        9
 #define DM_VERSION_PATCHLEVEL   0
-#define DM_VERSION_EXTRA        "-ioctl (2006-06-24)"
+#define DM_VERSION_EXTRA        "-ioctl (2006-09-14)"
 
 /* Status bits */
 #define DM_READONLY_FLAG        (1 << 0) /* In/Out */