linux-5.15/first_zones_zonelist() の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-5.15/first_zones_zonelist() へ行く。
  • 1 (2025-10-24 (金) 11:59:00)

参照元†

• linux-5.15/get_page_from_freelist()
• linux-5.15/prepare_alloc_pages()

説明†

• パス: [[linux-5.15/]]

• FIXME: これは何？
  • 説明

引数†

• struct zonelist *zonelist
  • linux-5.15/zonelist
• enum zone_type highest_zoneidx,
  • linux-5.15/zone_type
• nodemask_t *nodes
  • linux-5.15/nodemask_t

返り値†

• struct zoneref *

参考†

実装†

/**
 * first_zones_zonelist - Returns the first zone at or below highest_zoneidx within the allowed nodemask in a zonelist
 * @zonelist: The zonelist to search for a suitable zone
 * @highest_zoneidx: The zone index of the highest zone to return
 * @nodes: An optional nodemask to filter the zonelist with
 *
 * This function returns the first zone at or below a given zone index that is
 * within the allowed nodemask. The zoneref returned is a cursor that can be
 * used to iterate the zonelist with next_zones_zonelist by advancing it by
 * one before calling.
 *
 * When no eligible zone is found, zoneref->zone is NULL (zoneref itself is
 * never NULL). This may happen either genuinely, or due to concurrent nodemask
 * update due to cpuset modification.
 *
 * Return: Zoneref pointer for the first suitable zone found
 */
static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist,
					enum zone_type highest_zoneidx,
					nodemask_t *nodes)
{
	return next_zones_zonelist(zonelist->_zonerefs,
							highest_zoneidx, nodes);
}

• • [[linux-5.15/]]

コメント†