set_pageblock_migratetype(9)

💅 set_pageblock_migratetype(9) — the kernel API manual page, bestie edition

okay so this is set_pageblock_migratetype(9) from the Kernel API Manual and honestly? iconic little function. let's get into it ✨

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🎀 NAME 🎀

set_pageblock_migratetype — literally just: set the migratetype of a pageblock. that's the whole vibe. no cap.

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✨ SYNOPSIS ✨

void set_pageblock_migratetype (struct page *page , enum migratetype
migratetype );

like look at her. void, two args, zero drama. main character energy fr fr 🫶

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🌸 ARGUMENTS 🌸

• page — the page within the block of interest 👀 — not the block itself, bestie, the page inside it. read the room.
• migratetype — the migratetype you want to set. yes, that's it. that's the whole job. go off 💅

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🦋 SEE ALSO 🦋

a whole friend group, honestly. the kernel file ./mm/page_alloc.c and everyone she hangs with:

• __get_pfnblock_flags_mask(9)
• get_pfnblock_bit(9)
• get_pfnblock_migratetype(9)
• __set_pfnblock_flags_mask(9)
• set_pfnblock_bit(9)
• clear_pfnblock_bit(9)
• __move_freepages_block_isolate(9)
• __putback_isolated_page(9)
• __free_pages(9)
• free_pages(9)
• alloc_pages_exact(9)
• alloc_pages_exact_nid(9)
• free_pages_exact(9)
• nr_free_zone_pages(9)
• nr_free_buffer_pages(9)
• find_next_best_node(9)
• free_reserved_pages(9)
• setup_per_zone_wmarks(9)
• __free_contig_range(9)
• alloc_contig_frozen_range(9)
• alloc_contig_range(9)
• alloc_contig_frozen_pages(9)
• alloc_contig_pages(9)
• free_contig_frozen_range(9)
• free_contig_range(9)
• alloc_pages_nolock(9)

not me listing all 26 of them 😭 but every single one is here, so we ate. 💀

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and that's the page!! 🧚‍♀️ sourced straight outta ./mm, dated October 2026, and signed off with set_pageblock_migratetype(9) on the footer like the little legend she is. mwah 💖🍓