isolate_migratepages_range(9)

🎀 NAME 🎀

isolate_migratepages_range — she isolates migrate-able pages inside a PFN range, and honestly? she ate. this is section 9 of the Kernel API Manual, bestie, so buckle up 💅

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✨ SYNOPSIS ✨

int isolate_migratepages_range (struct compact_control *cc , unsigned long start_pfn , unsigned long end_pfn );

like, that's the whole signature. no cap. 🦋

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🌸 ARGUMENTS 🌸

• cc — the compaction control structure. she carries the state, she's the main character here 👑
• start_pfn — the first PFN where the isolating begins. start is right there in the name, iykyk ✨
• end_pfn — the one-past-last PFN. yes, one past. that's just how it is, don't fight it 🫶

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🔥 DESCRIPTION 🔥

okay so here's the little return-value menu, keep it in your notes:

• -EAGAIN — returned when contented 🙈
• -EINTR — returned in case of a signal pending 💀
• -ENOMEM — returned when we could not allocate a page 😭
• 0 — the good ending. she succeeded. slay 🌈

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⭐ SEE ALSO ⭐

• Kernel file ./mm/compaction.c — go read the source, it's giving lore 🍓
• isolate_freepages_range(9)
• skip_isolation_on_order(9)
• isolate_migratepages_block(9)
• try_to_compact_pages(9)

ngl all five of these are low-key obsessed with each other, check 'em out 💖

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<div align="center">🧚 from the ./mm girlies, dated October 2026 — stay compact, stay iconic, mwah 💜</div>