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SubjectRe: [PATCH 3/4] mremap: don't do uneccesary checks if new_len == old_len
On Sat, 20 Jun 2015, Oleg Nesterov wrote:

> The "new_len > old_len" branch in vma_to_resize() looks very confusing.
> It only covers the VM_DONTEXPAND/pgoff checks but everything below is
> equally unneeded if new_len == old_len.
>
> Change this code to return if "new_len == old_len", new_len < old_len
> is not possible, otherwise the code below is wrong anyway.
>
> Signed-off-by: Oleg Nesterov <oleg@redhat.com>

Acked-by: David Rientjes <rientjes@google.com>


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