Imported linux-2.6.27.39 suse/xen patches.

[ipfire-2.x.git] / src / patches / suse-2.6.27.39 / patches.fixes / md-update-size

From: NeilBrown <neilb@suse.de>
References: bnc#509495
Subject: Update size of md device as soon as it is successfully assemble.

It is import that we get the size of an md device 'right' before
generating the KOBJ_CHANGE message.  If we don't, then if a program
runs as a result of that message and open the md device before the
mdadm which created the device closes it, the new program will see a
size of zero which will be confusing.

So call revalidate_disk, which checks and updates the size.

Signed-off-by: NeilBrown <neilb@suse.de>

---
 drivers/md/md.c |    1 +
 1 file changed, 1 insertion(+)

--- linux-2.6.27-SLE11_BRANCH.orig/drivers/md/md.c
+++ linux-2.6.27-SLE11_BRANCH/drivers/md/md.c
@@ -3892,6 +3892,7 @@ static int do_md_run(mddev_t * mddev)
 	md_wakeup_thread(mddev->thread);
 	md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
 
+	revalidate_disk(mddev->gendisk);
 	mddev->changed = 1;
 	md_new_event(mddev);
 	sysfs_notify(&mddev->kobj, NULL, "array_state");