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Date:   Thu, 29 Apr 2021 10:12:39 +0300
From:   Leon Romanovsky <leon@kernel.org>
To:     Gal Pressman <galpress@amazon.com>
Cc:     David Ahern <dsahern@gmail.com>, linux-rdma@vger.kernel.org,
        netdev@vger.kernel.org, Yossi Leybovich <sleybo@amazon.com>,
        Alexander Matushevsky <matua@amazon.com>,
        Jason Gunthorpe <jgg@nvidia.com>
Subject: Re: [PATCH iproute2-next v2 2/2] rdma: Add copy-on-fork to get sys
 command
Message-ID: <YIpcZzOG/z2sbn/q@unreal>
References: <20210429064803.58458-1-galpress@amazon.com>
 <20210429064803.58458-3-galpress@amazon.com>
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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@amazon.com>
> ---
>  rdma/sys.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 

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