isolate_movable_ops_page(9)

💅 isolate_movable_ops_page(9) — like, the whole Kernel API Manual vibe, bestie 🎀

okay so real talk, this one is from the Kernel API Manual and it's lowkey one of those tiny functions that eats. let's get into it ✨

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✨ NAME ✨

isolate_movable_ops_page — isolates a movable_ops page so it can go migrate 🦋

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🌸 SYNOPSIS 🌸

bool isolate_movable_ops_page (struct page *page , isolate_mode_t mode
);

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🎀 ARGUMENTS 🎀

• page — bestie. the page. that's the one. 👑
• mode — the isolation mode, iykyk 💅

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💖 DESCRIPTION 💖

so the whole thing here is: we're trying to isolate a movable_ops page for migration. main character energy fr fr 🌈

it will fail if any of these happen, and honestly it's giving three separate heartbreaks 😭

• the page is not a movable_ops page 🙈
• the page is already isolated for migration 💀
• the page was just released by its owner 🫶

and like, once it is isolated? that page cannot get freed. periodt. it stays put until it's either putback or migrated — no in-between, no sneaky escape ⭐

returns true if the isolation actually succeeded, otherwise false ✨

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🧚 SEE ALSO 🧚

kernel file ./mm/migrate.c — go read it, it's iconic 🔥

• putback_movable_ops_page(9)
• migrate_movable_ops_page(9)
• migrate_folio(9)
• buffer_migrate_folio(9)
• buffer_migrate_folio_norefs(9)

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ngl this one is short but she's doing a lot of work in ./mm — treat her right 💜

k bye ily, this page lives in ./mm, version October 2026, and it's literally called isolate_movable_ops_page(9) — slay, go isolate something 🌸💅