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    SubjectRe: [RFC][PATCH] get rid of the use of set_fs() (by way of kernel_recvmsg()) in sunrpc
    On Wed, Jan 17, 2018 at 7:06 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
    >
    > Similar to the way put_cmsg() handles 32bit case on biarch
    > targets, introduce a flag telling put_cmsg() to treat
    > ->msg_control as kernel pointer, using memcpy instead of
    > copy_to_user(). That allows to avoid the use of kernel_recvmsg()
    > with its set_fs().

    If this is the only case that kernel_recvmsg() exists for, then by all
    means, that patch certainly looks like a good thing.

    Linus

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