[gnutls-devel] GnuTLS | priority: rework config reloading logic and locking (!1483)

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Daiki Ueno commented on a discussion on lib/priority.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1483#note_721319877

>  			 * allow it to be updated without restarting
>  			 * all applications
>  			 */
> +			GNUTLS_STATIC_MUTEX_LOCK(system_wide_config_mutex);
>  			_gnutls_update_system_priorities();

One minor thing on excluding the mtime check from the wrlock section is that, when there is a contention, it would require extra `stat` syscall after obtaining wrlock (because the timestamp may have changed while waiting).

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