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Date:   Mon, 11 May 2020 13:59:10 +0200
From:   Christoph Hellwig <>
To:     "David S. Miller" <>,
        Jakub Kicinski <>
Subject: improve msg_control kernel vs user pointer handling

Hi Dave,

this series replace the msg_control in the kernel msghdr structure
with an anonymous union and separate fields for kernel vs user
pointers.  In addition to helping a bit with type safety and reducing
sparse warnings, this also allows to remove the set_fs() in
kernel_recvmsg, helping with an eventual entire removal of set_fs().

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