[LTP] [PATCH] lio_listio_2-1: Rewrite test

[Petr Vorel]

Hi Martin,

LGTM, thank you!

Reviewed-by: Petr Vorel <pvorel@suse.cz>

> The test schedules multiple async writes into a file and then hopes that
> at least one will block long enough that a variable can be checked before
> the completion signal arrives. Use a socket pair instead of file
> to force async writes to block indefinitely. Then drain the socket after
> the first signal check and wait for the signal.

> Add cleanup helper function that will flush socket buffers, free allocated
> memory and close the sockets. Also make setup and cleanup simpler
> by statically allocating the aiocb structure array.

> Signed-off-by: Martin Doucha <mdoucha@suse.cz>
> ---

> Another race condition fix by filling socket pair buffers until they
> block. Tested on kernel v4.4 and v6.12.

Tested on 6.17. (I was able to trigger "Error lio_listio() waited for list
completion" failure without the patch when running in loop, not with the patch).

Kind regards,
Petr