From: Jeff Mahoney <[email protected]>
In alloc_dev(), we register the device with the block layer and then
continue to initialize the device. But register_disk() makes
the device available to be opened before we have completed
initialising it.
This patch moves the final bits of the initialization above the disk
registration.
Signed-off-by: Jeff Mahoney <[email protected]>
Signed-Off-By: Alasdair G Kergon <[email protected]>
Index: linux-2.6.17-rc4/drivers/md/dm.c
===================================================================
--- linux-2.6.17-rc4.orig/drivers/md/dm.c 2006-05-23 19:37:14.000000000 +0100
+++ linux-2.6.17-rc4/drivers/md/dm.c 2006-05-23 19:38:01.000000000 +0100
@@ -891,6 +891,10 @@ static struct mapped_device *alloc_dev(u
if (!md->disk)
goto bad4;
+ atomic_set(&md->pending, 0);
+ init_waitqueue_head(&md->wait);
+ init_waitqueue_head(&md->eventq);
+
md->disk->major = _major;
md->disk->first_minor = minor;
md->disk->fops = &dm_blk_dops;
@@ -900,10 +904,6 @@ static struct mapped_device *alloc_dev(u
add_disk(md->disk);
format_dev_t(md->name, MKDEV(_major, minor));
- atomic_set(&md->pending, 0);
- init_waitqueue_head(&md->wait);
- init_waitqueue_head(&md->eventq);
-
/* Populate the mapping, nobody knows we exist yet */
spin_lock(&_minor_lock);
old_md = idr_replace(&_minor_idr, md, minor);
-
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