6 uses of MAINTENANCE_MODE

hook_cache_flush in core/core.api.php
Flush all persistent and static caches.
StatusReport::preRenderGroupRequirements in core/lib/Drupal/Core/Render/Element/StatusReport.php
#pre_render callback to group requirements.
StatusReportPage::preRenderCounters in core/modules/system/src/Element/StatusReportPage.php
#pre_render callback to create counter elements.
template_preprocess_install_page in core/includes/theme.inc
Prepares variables for install page templates.
user_role_permissions in core/modules/user/user.module
Determine the permissions for one or more roles.
_drupal_maintenance_theme in core/includes/theme.maintenance.inc
Sets up the theming system for maintenance page.

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