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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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