next_zones_zonelist(9)

💅 next_zones_zonelist 💅

okay so bestie, this is next_zones_zonelist(9) from the Kernel API Manual, and it's giving “tiny cursor go brrr inside a zonelist” energy. no cap, it's a little helper for walking zones without losing your place. 🦋

✨ NAME ✨

next_zones_zonelist — returns the next zone at or below highest_zoneidx within the allowed nodemask, using a cursor within a zonelist as a starting point. periodt. 💖

🌈 SYNOPSIS 🌈

struct zoneref * next_zones_zonelist (struct zoneref *z , enum zone_type
highest_zoneidx , const nodemask_t *nodes );

🎀 ARGUMENTS 🎀

• z — the cursor you're using as a starting point for the search. main character of the walk, fr fr. 👑
• highest_zoneidx — the zone index of the highest zone to return. like the ceiling, bestie. ⭐
• nodes — an optional nodemask to filter the zonelist with. optional but iconic. 💅

🦋 DESCRIPTION 🦋

This function returns the next zone at or below a given zone index that is within the allowed nodemask, using a cursor as the starting point for the search. The zoneref returned is a cursor that represents the current zone being examined. It should be advanced by one before calling next_zones_zonelist again. literally do not forget that advance-by-one step, iykyk. 😭

🔥 RETURN 🔥

the next zone at or below highest_zoneidx within the allowed nodemask, using a cursor within a zonelist as a starting point. that's the whole vibe check. ✨

🌸 SEE ALSO 🌸

Kernel file ./include/linux/mmzone.h is right here in the group chat, plus these iconic little refs:

• is_highmem(9)
• for_each_online_pgdat(9)
• for_each_zone(9)
• first_zones_zonelist(9)
• for_each_zone_zonelist_nodemask(9)
• for_each_zone_zonelist(9)
• pfn_valid(9)

okay that's the page, mwah 💋 — source/version is ./include/linux, dated October 2026, and the manpage is next_zones_zonelist(9). obsessed with this for you, bestie. 🫶