// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/mm/swap.c
 *
 *  Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
 */

/*
 * This file contains the default values for the operation of the
 * Linux VM subsystem. Fine-tuning documentation can be found in
 * Documentation/admin-guide/sysctl/vm.rst.
 * Started 18.12.91
 * Swap aging added 23.2.95, Stephen Tweedie.
 * Buffermem limits added 12.3.98, Rik van Riel.
 */

/* Extracted unchanged from Linux v6.0, mm/swap.c:388-398.
 * Complete function definition; surrounding kernel context is required.
 * Source: https://github.com/torvalds/linux/blob/v6.0/mm/swap.c#L388
 * License text: GPL-2.0.txt (in this directory).
 */
static void folio_activate(struct folio *folio)
{
	struct lruvec *lruvec;

	if (folio_test_clear_lru(folio)) {
		lruvec = folio_lruvec_lock_irq(folio);
		folio_activate_fn(lruvec, folio);
		unlock_page_lruvec_irq(lruvec);
		folio_set_lru(folio);
	}
}