count_highmem_pages(9)

💖 count_highmem_pages(9) — Kernel API Manual 💖

okay bestie, welcome to the count_highmem_pages(9) page from the Kernel API Manual. It’s giving “small but important” and we’re gonna treat it with the respect it deserves. 💅

🌸 NAME 🌸

count_highmem_pages — compute the total number of saveable highmem pages. Fr fr, that’s the whole gig. ✨

✨ SYNOPSIS ✨

unsigned int count_highmem_pages (void );

🎀 ARGUMENTS 🎀

• void — no arguments. Literally none, bestie. The function takes nothing and wants nothing. 🫶

🔥 SEE ALSO 🔥

Kernel file ./kernel/power/snapshot.c, plus the whole squad:

• get_image_page(9)
• free_image_page(9)
• alloc_rtree_node(9)
• free_mem_extents(9)
• create_mem_extents(9)
• memory_bm_next_pfn(9)
• mark_nosave_pages(9)
• create_basic_memory_bitmaps(9)
• free_basic_memory_bitmaps(9)
• snapshot_additional_pages(9)
• count_free_highmem_pages(9)
• count_data_pages(9)
• swsusp_free(9)
• preallocate_image_pages(9)
• free_unnecessary_pages(9)
• minimum_image_size(9)
• hibernate_preallocate_memory(9)
• pack_pfns(9)
• snapshot_read_next(9)
• unpack_orig_pfns(9)
• count_highmem_image_pages(9)
• prepare_highmem_image(9)
• copy_last_highmem_page(9)
• prepare_image(9)
• snapshot_write_next(9)
• restore_highmem(9)

mwah 💋 this lil page is brought to you by source/version ./kernel/power, dated October 2026, and it’s literally count_highmem_pages(9) — iconic, no cap. 👑