[LTP] [PATCH v4] lib: Use backoff polling to wait for loop device nodes

[Andrea Cervesato]

Hi Wake,

I sent the Reviewed-by tag to the wrong email. @Li the agent review is
correct and backoff polling is not working with old API. We need to find
an another way for that.

As you can see the CI is failing everywhere in v4:
https://patchwork.kernel.org/project/ltp/patch/20260805025418.1249003-1-wakel@google.com/

Regards
--
Andrea Cervesato
SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com