linux-5.15/first_zones_zonelist() の変更点

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• linux-5.15/first_zones_zonelist() へ行く。
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#author("2025-10-24T11:59:00+09:00","default:guest","guest")

#author("2025-10-24T12:00:03+09:00","default:guest","guest")
*参照元 [#k31dd481]
#backlinks

*説明 [#p4997609]
-パス: [[linux-5.15/]]
-パス: [[linux-5.15/include/linux/mmzone.h]]

-FIXME: これは何？
--説明


**引数 [#cb9e4058]
-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 [#wce143c3]
-struct zoneref *
--
--[[linux-5.15/zoneref]]


**参考 [#wb02da06]


*実装 [#mbe6404c]

 /**
  * 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/]]
--[[linux-5.15/next_zones_zonelist()]]


*コメント [#ndf21c6c]