// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/mm/swapfile.c
 *
 *  Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
 *  Swap reorganised 29.12.95, Stephen Tweedie
 */

/*
 * Official Linux v6.12: mm/swapfile.c
 * https://github.com/torvalds/linux/blob/v6.12/mm/swapfile.c#L1869
 * Exact definition/declaration; not a reconstruction of a book listing.
 * See GPL-2.0.txt. Not a standalone translation unit.
 */

bool folio_free_swap(struct folio *folio)
{
	if (!folio_swapcache_freeable(folio))
		return false;
	if (folio_swapped(folio))
		return false;

	delete_from_swap_cache(folio);
	folio_set_dirty(folio);
	return true;
}