mempool_alloc_bulk(9)

📦 version 7.3.1, in nixpkgs unstable

💖 mempool_alloc_bulk(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this one's all about mempool_alloc_bulk, and it's lowkey a vibe. it grabs a whole handful of elements out of a memory pool for you, no cap. 🫶

✨ NAME ✨

mempool_alloc_bulk — allocate multiple elements from a memory pool 🎀

🌸 SYNOPSIS 🌸

int mempool_alloc_bulk (struct mempool *pool , void **elems , unsigned int count );

like, that's the whole signature, she's right there 👑

🦋 ARGUMENTS 🦋

  • pool — pointer to the memory pool 💧 that's your pool, your main character
  • elems — a partially or fully populated elements array 📦 it can show up half-full or fully stacked, either way she's valid
  • count — the number of entries in elem that need to be allocated 🔢 yes bestie, literally how many slots we're filling

🌈 DESCRIPTION 🌈

so here's the tea ☕ — this bad boy allocates count elements into elems.

the way it works is: first it calls into the alloc_fn that you supplied back at pool initialization time ✨, and then, when alloc_fn fails to allocate an element (rude of it honestly 😭), it dips into the reserved pool instead. like a backup bestie. 💅

on return, all count elements in elems will be populated 🎉 every single one. fully seated. no empty chairs at this table. 🔥

⭐ RETURN ⭐

always 0. that's it. that's the whole return value. 🫶

fun fact: if it wasn't for %$#^$ alloc tags, it would return void. instead it returns 0 and we all just live with that 💀

👑 SEE ALSO 👑

kernel file ./mm/mempool.c — go read her, she's iconic 📖

okay and finally, the cute lil sign-off 🎀 this whole page lives in ./mm, it's dated October 2026, and yes — mempool_alloc_bulk(9) is the title, she's in the 9 section, periodt. 💜✨🧚

📦 where this page comes from