On Thu, Aug 31, 2017 at 3:03 AM, Christoph Hellwig <hch@xxxxxx> wrote:
>> +/*
>> + * The historical set of flags that all mmap implementations implicitly
>> + * support when file_operations.mmap_supported_mask is zero. With the
>> + * mmap3 syscall the deprecated MAP_DENYWRITE and MAP_EXECUTABLE bit
>> + * values are explicitly rejected with EOPNOTSUPP rather than being
>> + * silently accepted.
>> + */
>
> no mmap3 syscall here :)
True, that's stale.
> Do you also need to update the nommu mmap implementation?
Ugh, nommu defeats the MAP_SHARED_VALIDATE proposal from Linus.
if ((flags & MAP_TYPE) != MAP_PRIVATE &&
(flags & MAP_TYPE) != MAP_SHARED)
return -EINVAL;
...parisc strikes again.
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