[PATCH 3/8] elf: Avoid redundant ld.so.cache reload after first load

[DJ Delorie]

Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:
> -  /* Any file is better than no file (likely the first time
> -     through).  */
> -  if (cache == NULL)
> -    return true;
> -
> -  /* Store the fields we check, in order they're likely to differ.  */
> +  /* Store the fields we check, in order they're likely to differ.  We
> +     must do this even for the first load (CACHE == NULL below), so that
> +     the next call copies an accurate NEW_CACHE_FILE_TIME into
> +     CACHE_FILE_TIME and does not spuriously reload the unchanged cache.  */
>    new_cache_file_time.mtime = new_cache_file_stat.st_mtime;
>    new_cache_file_time.ino = new_cache_file_stat.st_ino;
>    new_cache_file_time.size = new_cache_file_stat.st_size;
>    new_cache_file_time.dev = new_cache_file_stat.st_dev;
>  
> +  /* Any file is better than no file (likely the first time
> +     through).  */
> +  if (cache == NULL)
> +    return true;
> +
>    /* At this point, NEW_CACHE_FILE_TIME is valid as well as
>       CACHE_FILE_TIME, so we compare them.  */
>    return (memcmp (&new_cache_file_time, &cache_file_time,

LGTM
Reviewed-by: DJ Delorie <dj@redhat.com>