netdev - Re: [PATCH iproute2-next v2 2/2] rdma: Add copy-on-fork to get sys command

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Date:   Thu, 29 Apr 2021 10:12:39 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Gal Pressman <galpress@...zon.com>
Cc:     David Ahern <dsahern@...il.com>, linux-rdma@...r.kernel.org,
        netdev@...r.kernel.org, Yossi Leybovich <sleybo@...zon.com>,
        Alexander Matushevsky <matua@...zon.com>,
        Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH iproute2-next v2 2/2] rdma: Add copy-on-fork to get sys
 command

On Thu, Apr 29, 2021 at 09:48:03AM +0300, Gal Pressman wrote:
> The new attribute indicates that the kernel copies DMA pages on fork,
> hence fork support through madvise and MADV_DONTFORK is not needed.
> 
> If the attribute is not reported (expected on older kernels),
> copy-on-fork is disabled.
> 
> Example:
> $ rdma sys
> netns shared copy-on-fork on
> 
> Signed-off-by: Gal Pressman <galpress@...zon.com>
> ---
>  rdma/sys.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 

Thanks,
Acked-by: Leon Romanovsky <leonro@...dia.com>