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Date:   Fri, 29 Apr 2022 19:15:38 -0700
From:   Jakub Kicinski <>
To:     Jens Axboe <>
Cc:     netdev <>,
        Eric Dumazet <>,
        Neal Cardwell <>
Subject: Re: [PATCH v3] tcp: pass back data left in socket after receive

On Thu, 28 Apr 2022 18:45:06 -0600 Jens Axboe wrote:
> This is currently done for CMSG_INQ, add an ability to do so via struct
> msghdr as well and have CMSG_INQ use that too. If the caller sets
> msghdr->msg_get_inq, then we'll pass back the hint in msghdr->msg_inq.
> Rearrange struct msghdr a bit so we can add this member while shrinking
> it at the same time. On a 64-bit build, it was 96 bytes before this
> change and 88 bytes afterwards.
> Reviewed-by: Eric Dumazet <>
> Signed-off-by: Jens Axboe <>

Commit f94fd25cb0aa ("tcp: pass back data left in socket after
receive") in net-next now, thanks!

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