From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Thornber <thornber@redhat.com>
Subject: Re: [PATCH] dm-kcopyd: optionally zero an area instead
	of copying
Date: Thu, 9 Jun 2011 11:04:30 +0100
Message-ID: <20110609100429.GE3152@ubuntu>
References: <Pine.LNX.4.64.1106081753570.7811@hs20-bc2-1.build.redhat.com>
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To: Mikulas Patocka <mpatocka@redhat.com>
Cc: dm-devel@redhat.com, "Alasdair G. Kergon" <agk@redhat.com>
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On Wed, Jun 08, 2011 at 05:55:37PM -0400, Mikulas Patocka wrote:
> Hi
> 
> This patch introduces an option to kcopyd to zero requested area instead 
> of copying. I think Joe may need something like this in his snapshot 
> store.

Could we have another function please, rather than overloading the
existing entry point?

i.e.,

int dm_kcopyd_zero(struct dm_kcopyd_client *kc,
		   unsigned num_dests, struct dm_io_region *dests,
		   unsigned flags, dm_kcopyd_notify_fn fn, void *context);

Thanks,

- Joe