summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--drivers/md/dm-table.c17
-rw-r--r--drivers/md/dm.c4
-rw-r--r--drivers/md/dm.h2
-rw-r--r--include/linux/device-mapper.h2
-rw-r--r--include/linux/dm-ioctl.h4
5 files changed, 23 insertions, 6 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 75fe9493e6a..47412ae98fb 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 883860c3565..aeb63a3ac33 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 fe701c4834f..a48ec5e3c1f 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 d44a99650af..8cbc46b8e3d 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 b349b768df3..f28b5c87aa6 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 */