lkml.org 
[lkml]   [2006]   [May]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 9/10] dm: fix block device initialisation
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/
\
 
 \ /
  Last update: 2006-05-25 21:22    [W:0.026 / U:0.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site