On 2023-07-16 13:45, наб wrote:
> /proc/sys/fs/epoll/max_user_instances hasn't existed since
> commit 9df04e1f25effde823a600e755b51475d438f56b
> ("epoll: drop max_user_instances and rely only on max_user_watches")
> from
> Date: Thu Jan 29 14:25:26 2009 -0800
> which describes to v2.6.29-rc3-24-g9df04e1f25ef.
>
> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
> ---
> The sysctl(2) path would be "fs.epoll.m_u_i" so "kernel parameter" it is
> since we spec the filesystem-domain path.
Hi,
Patch applied. Thanks!
>
> man2/epoll_create.2 | 19 +++++++++++--------
> 1 file changed, 11 insertions(+), 8 deletions(-)
>
> diff --git a/man2/epoll_create.2 b/man2/epoll_create.2
> index 4d3566a79..2a21bbf8b 100644
> --- a/man2/epoll_create.2
> +++ b/man2/epoll_create.2
> @@ -83,14 +83,6 @@ .SH ERRORS
> .IR flags .
> .TP
> .B EMFILE
> -The per-user limit on the number of epoll instances imposed by
> -.I /proc/sys/fs/epoll/max_user_instances
> -was encountered.
> -See
> -.BR epoll (7)
> -for further details.
> -.TP
> -.B EMFILE
> The per-process limit on the number of open file descriptors has been reached.
> .TP
> .B ENFILE
> @@ -134,6 +126,17 @@ .SH HISTORY
> in order to ensure backward compatibility when new
> .B epoll
> applications are run on older kernels.
> +.PP
> +Prior to Linux 2.6.29,
> +.\" commit 9df04e1f25effde823a600e755b51475d438f56b
> +a
> +.I /proc/sys/fs/epoll/max_user_instances
> +kernel parameter limited live epolls for each real user ID,
> +and caused
> +.BR epoll_create ()
> +to fail with
> +.B EMFILE
> +on overrun.
> .SH SEE ALSO
> .BR close (2),
> .BR epoll_ctl (2),
--
<http://www.alejandro-colomar.es/>
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