[PATCH] elf: Fix fences in _dl_find_object_update (bug 28745)

[Andreas Schwab]

On Jan 05 2022, Florian Weimer via Libc-alpha wrote:

> As explained in Hans Boehm, Can Seqlocks Get Along with Programming
> Language Memory Models?, an acquire fence is needed in
> _dlfo_read_success.  The lack of a fence was

This sentence is

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Andreas Schwab, schwab@linux-m68k.org
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