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    SubjectRe: make PROT_WRITE imply PROT_READ
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    >
    > hi,
    >
    > So if i create a PROT_WRITE only mapping and then read from first and then
    > writte to it a get a SEGV. However, if i write to it first and then read
    > from it, i don't get a SEGV...Why should the read/write ordering matter?

    it matters only on those cpus that don't have explicit/separate read
    permissions (just like PROT_EXEC is implied on cpus that don't have a
    special permission bit for that)...



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