From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 1 Aug 2023 16:14:04 +0000 (+0900)
Subject: udev: allow to set the maximum number of worker process to 0
X-Git-Tag: v255-rc1~807^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2cba1d3753d56322617c671cb4e5d3777eb0a5ef;p=thirdparty%2Fsystemd.git

udev: allow to set the maximum number of worker process to 0

In that case, the maximum is calculated based on the system resources.
---

diff --git a/src/udev/udev-manager.c b/src/udev/udev-manager.c
index 676e97a7f32..6653de6b452 100644
--- a/src/udev/udev-manager.c
+++ b/src/udev/udev-manager.c
@@ -947,7 +947,7 @@ static int on_ctrl_msg(UdevCtrl *uctrl, UdevCtrlMessageType type, const UdevCtrl
                 break;
         }
         case UDEV_CTRL_SET_CHILDREN_MAX:
-                if (value->intval <= 0) {
+                if (value->intval < 0) {
                         log_debug("Received invalid udev control message (SET_MAX_CHILDREN, %i), ignoring.", value->intval);
                         return 0;
                 }
@@ -955,6 +955,9 @@ static int on_ctrl_msg(UdevCtrl *uctrl, UdevCtrlMessageType type, const UdevCtrl
                 log_debug("Received udev control message (SET_MAX_CHILDREN), setting children_max=%i", value->intval);
                 manager->children_max = value->intval;
 
+                /* When 0 is specified, determine the maximum based on the system resources. */
+                manager_set_default_children_max(manager);
+
                 notify_ready(manager);
                 break;
         case UDEV_CTRL_PING: