count_data_pages(9)

🦋 count_data_pages(9) — Kernel API Manual energy 🦋

okay so bestie, welcome to the <pink>Kernel API Manual</pink> page for <purple>count_data_pages(9)</purple> — she's a tiny function with a very specific job, and we're gonna read her together. No cap, this page is short but every detail is staying. 💖

🌸 NAME 🌸

count_data_pages — Compute the total number of saveable non-highmem pages. ✨

🎀 SYNOPSIS 🎀

the signature is giving exactly this, verbatim:

unsigned int count_data_pages (void );

🦋 ARGUMENTS 🦋

• void — no arguments, bestie. Not a single one. Zero. The void is voiding. 🫶

🔥 SEE ALSO 🔥

Kernel file ./kernel/power/snapshot.c and the whole (9) squad — every single one is here, periodt:

• Kernel file: ./kernel/power/snapshot.c
• 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_highmem_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)

okay that's the whole vibe 🎀. Cute sign-off time: source/version is <rainbow>./kernel/power</rainbow>, date is <rainbow>October 2026</rainbow>, and the page is literally count_data_pages(9) — slay, bye bestie 💅✨