Hi,

On 8/3/22 09:45, GUO Zihua wrote:
> The O_NONBLOCK flag has been ignored since Linux 5.6 and this patch
> states this change in man page.
> 
> The commit that introduce this change in the Linux kernel is
> 30c08efec888 ("random: make /dev/random be almost like /dev/urandom")
> 
> Signed-off-by: GUO Zihua <guozihua@huawei.com>
> Reviewed-by: Petr Vorel <pvorel@suse.cz>

Patch applied.

Thanks,

Alex

> ---
> 
> v3:
> -Replaced "removed" with "ignored" as suggested by Florian. Added
> Reviewed-by by Petr
> 
> v2:
> -Fix formating issue.
> ---
>   man4/random.4 | 7 ++++++-
>   1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/man4/random.4 b/man4/random.4
> index bea860e7f0d7..3227a483d4a9 100644
> --- a/man4/random.4
> +++ b/man4/random.4
> @@ -68,7 +68,12 @@ high quality randomness, and can afford indeterminate delays.
>   .PP
>   When the entropy pool is empty, reads from \fI/dev/random\fP will block
>   until additional environmental noise is gathered.
> -If
> +Since Linux 5.6, the
> +.B O_NONBLOCK
> +flag is ignored as
> +.I /dev/random
> +will no longer block except during early boot process.
> +In eariler versions, if
>   .BR open (2)
>   is called for
>   .I /dev/random

-- 
Alejandro Colomar
<http://www.alejandro-colomar.es/>