Messages in this thread Patch in this message | | | Date | Thu, 25 May 2006 20:19:49 +0100 | From | Alasdair G Kergon <> | Subject | [PATCH 9/10] dm: fix block device initialisation |
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From: Jeff Mahoney <jeffm@suse.com>
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 <jeffm@suse.com> Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
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); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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