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    SubjectRe: [GIT PULL] io_uring updates for 5.10-rc1
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    On 10/13/20 1:46 PM, Linus Torvalds wrote:
    > On Mon, Oct 12, 2020 at 6:46 AM Jens Axboe <axboe@kernel.dk> wrote:
    >>
    >> Here are the io_uring updates for 5.10.
    >
    > Very strange. My clang build gives a warning I've never seen before:
    >
    > /tmp/io_uring-dd40c4.s:26476: Warning: ignoring changed section
    > attributes for .data..read_mostly
    >
    > and looking at what clang generates for the *.s file, it seems to be
    > the "section" line in:
    >
    > .type io_op_defs,@object # @io_op_defs
    > .section .data..read_mostly,"a",@progbits
    > .p2align 4
    >
    > I think it's the combination of "const" and "__read_mostly".
    >
    > I think the warning is sensible: how can a piece of data be both
    > "const" and "__read_mostly"? If it's "const", then it's not "mostly"
    > read - it had better be _always_ read.
    >
    > I'm letting it go, and I've pulled this (gcc doesn't complain), but
    > please have a look.

    Huh weird, I'll take a look. FWIW, the construct isn't unique across
    the kernel.

    What clang are you using?

    --
    Jens Axboe

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