From mboxrd@z Thu Jan  1 00:00:00 1970
From: Milan Broz <mbroz@redhat.com>
Subject: Re: [PATCH][RFC] Emulate BLKRRPART on device-mapper
Date: Wed, 22 Jul 2009 10:12:56 +0200
Message-ID: <4A66CA08.9080509@redhat.com>
References: <200907081414.50698.knikanth@suse.de>
	<20090720182324.GD32330@agk-dp.fab.redhat.com>
	<4A65E912.6020706@redhat.com> <4A66BA60.2020500@suse.de>
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To: Hannes Reinecke <hare@suse.de>
Cc: Nikanth Karthikesan <knikanth@suse.de>, device-mapper development <dm-devel@redhat.com>, Alasdair G Kergon <agk@redhat.com>, Jens Axboe <jens.axboe@oracle.com>
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Hannes Reinecke wrote:
>> +	/* partitions handled in userspace, just send change event */
>> +	if (disk_userspace_partitions(disk)) {
>> +		kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);
>> +		return 0;
>> +	}
>> +
> Wrong. If you do it here, you'll never be able to catch any size changes
> of the disk. You'll have to move it to after the 'bdev->bd_invalidated = 0'
> line.

Yes, for non-DM devices which want to use that flag.

For device-mapper device, size can change only by mapping table change
which always generate change uevent.

> I would suggest renaming it to GENHD_FL_USERSPACE_PARTITIONS, as this is
> more in line with the function of the flag.

no problem here:-)

Milan