[PATCH] dm: tidy mdptr
Change dm_get_mdptr() to take a struct mapped_device instead of dev_t.
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 442e2be..0693b6f 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -600,12 +600,22 @@
*/
static struct hash_cell *__find_device_hash_cell(struct dm_ioctl *param)
{
+ struct mapped_device *md;
+ void *mdptr = NULL;
+
if (*param->uuid)
return __get_uuid_cell(param->uuid);
- else if (*param->name)
+
+ if (*param->name)
return __get_name_cell(param->name);
- else
- return dm_get_mdptr(huge_decode_dev(param->dev));
+
+ md = dm_get_md(huge_decode_dev(param->dev));
+ if (md) {
+ mdptr = dm_get_mdptr(md);
+ dm_put(md);
+ }
+
+ return mdptr;
}
static struct mapped_device *find_device(struct dm_ioctl *param)