__putback_isolated_page(9)

📦 version 7.3.1, in nixpkgs unstable

💖 __putback_isolated_page — a Kernel API Manual moment 💖

okay so bestie, welcome to the Kernel API Manual entry for __putback_isolated_page(9). it's a whole vibe, it's giving "put it back where you found it", and honestly we're obsessed 🫶

✨ NAME ✨

__putback_isolated_page — Return a now-isolated page back where we got it 🌸

like literally, it's the uno reverse card for a page 🦋

✨ SYNOPSIS ✨

void __putback_isolated_page (struct page *page , unsigned int order ,
int mt );

that's the whole signature, no cap 💅

✨ ARGUMENTS ✨

  • page — Page that was isolated 🎀 the actual little guy we're returning
  • order — Order of the isolated page ⭐ its size energy, iykyk
  • mt — The page's pageblock's migratetype 🌈 the migratetype of the pageblock that page belongs to

✨ DESCRIPTION ✨

so here's the tea ☕: this function is meant to return a page pulled from the free lists via __isolate_free_page back to the free lists they were pulled from. that's it, that's the whole job 🧚

like, it went out, it had its little main character era on the isolated side, and now it goes home. periodt 💅✨

✨ SEE ALSO ✨

bestie, this list is LONG and we're respecting every single one of them 💖 no skipping, no summarising, we don't do that here 🫶

Kernel file ./mm/page_alloc.c and all its friends:

like... a whole friend group 😭👑

and that's the page, bestie! 🎀 this little icon lives in the source dir ./mm, and the manual's dated October 2026 — so yeah, it's a __putback_isolated_page(9) situation from ./mm, October 2026, signed sealed delivered 💌 mwah 💋

📦 where this page comes from