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    SubjectRe: [PATCH] ubi: kill homegrown endian macros
    On Thu, May 17, 2007 at 09:42:34PM +0100, Al Viro wrote:
    > Ahem... So what does
    > x |= y;
    > turns into with that approach?

    Another case is

    #define FLAG1 cpu_to_be32(2)
    #define FLAG2 cpu_to_be32(0x400)

    if (packet_header->field & (FLAG1 | FLAG2))

    which is a bloody common idiom in net/* and it happens on some pretty hot
    paths. Approaches that would require converting it to something like
    if (be32_to_cpu(packet_header->field) & (FLAG1 | FLAG2))
    would be not just obnoxious, they would actually generate worse code.
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