Abstract dm_find_md() from dm_get_mdptr() to allow use elsewhere.
From: David Teigland <[email protected]>
Signed-Off-By: Alasdair G Kergon <[email protected]>
Index: linux-2.6.14/drivers/md/dm.c
===================================================================
--- linux-2.6.14.orig/drivers/md/dm.c 2005-11-18 14:40:40.000000000 +0000
+++ linux-2.6.14/drivers/md/dm.c 2005-11-18 14:40:48.000000000 +0000
@@ -913,10 +913,9 @@ int dm_create_with_minor(unsigned int mi
return create_aux(minor, 1, result);
}
-void *dm_get_mdptr(dev_t dev)
+static struct mapped_device *dm_find_md(dev_t dev)
{
struct mapped_device *md;
- void *mdptr = NULL;
unsigned minor = MINOR(dev);
if (MAJOR(dev) != _major || minor >= (1 << MINORBITS))
@@ -925,12 +924,22 @@ void *dm_get_mdptr(dev_t dev)
down(&_minor_lock);
md = idr_find(&_minor_idr, minor);
-
- if (md && (dm_disk(md)->first_minor == minor))
- mdptr = md->interface_ptr;
+ if (!md || (dm_disk(md)->first_minor != minor))
+ md = NULL;
up(&_minor_lock);
+ return md;
+}
+
+void *dm_get_mdptr(dev_t dev)
+{
+ struct mapped_device *md;
+ void *mdptr = NULL;
+
+ md = dm_find_md(dev);
+ if (md)
+ mdptr = md->interface_ptr;
return mdptr;
}
-
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