[PATCH v3 27/32] elf: Determine the caller link map in _dl_open

[Florian Weimer]

* Joseph Myers:

> On Thu, 7 Dec 2023, Florian Weimer wrote:
>
>> No functional change expected.
>> 
>> This is in preparation of adding a fast path to dlopen in case
>> no link map changes are required.
>
> OK.

This applies independently of the series, so I'm going to push this
after testing.

Thanks,
Florian