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List:       dm-devel
Subject:    Re: [dm-devel] [PATCH V4 12/12] dm: support IO polling for bio-based dm device
From:       Hannes Reinecke <hare () suse ! de>
Date:       2021-03-30 6:40:58
Message-ID: c9cb5fe6-490e-867c-a8bc-842f3c5de835 () suse ! de
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On 3/29/21 5:26 PM, Ming Lei wrote:
> From: Jeffle Xu <jefflexu@linux.alibaba.com>
> 
> IO polling is enabled when all underlying target devices are capable
> of IO polling. The sanity check supports the stacked device model, in
> which one dm device may be build upon another dm device. In this case,
> the mapped device will check if the underlying dm target device
> supports IO polling.
> 
> Reviewed-by: Mike Snitzer <snitzer@redhat.com>
> Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
> Signed-off-by: Ming Lei <ming.lei@redhat.com>
> ---
>   drivers/md/dm-table.c         | 24 ++++++++++++++++++++++++
>   drivers/md/dm.c               | 14 ++++++++++++++
>   include/linux/device-mapper.h |  1 +
>   3 files changed, 39 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
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