gen_pool_fixed_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gen_pool_fixed_alloc(9) — the Kernel API Manual moment

okay so first things first, bestie: this whole page is from the Kernel API Manual, section 9, and the star of the show is gen_pool_fixed_alloc. periodt. 🎀

✨ NAME ✨

gen_pool_fixed_alloc — reserve a specific region 🌸

like, you're not out here vibing with whatever region the allocator feels like handing you. you are choosing. main character energy fr fr.

🦋 SYNOPSIS 🦋

unsigned long gen_pool_fixed_alloc (unsigned long *map , unsigned long
size , unsigned long start , unsigned int nr , void *data , struct
gen_pool *pool , unsigned long start_addr );

look at her. seven arguments. she's that girl and she knows it. 💅

💖 ARGUMENTS 💖

  • map — the address to base the search on. it's the whole map of the situation, iykyk 🗺️
  • size — the bitmap size, measured in bits. yes, bits. not bytes. bits. be normal about it ✨
  • start — the bitnumber to start searching at, like your little starting point before you go looking for a spot 🎀
  • nr — the number of zeroed bits we're looking for. so basically how many clear bits you need to snatch up 🫶
  • data — data for alignment. it's the alignment info, doing alignment things 🧚
  • pool — pool to get order from, the actual pool we're pulling from 👑
  • start_addr — not used in this function. literally not used. she's just there. sitting pretty. iconic honestly 💀

🔥 SEE ALSO 🔥

lowkey the whole gen_pool family reunion is happening here, so lemme introduce everyone:

Kernel file ./lib/genalloc.c ✨

not me listing literally all 24 of them because every single one matters 💜

okay that's the whole page bestie, go reserve your specific region and slay 🦋💖

and that's a wrap on this little ./lib cutie from October 2026 — gen_pool_fixed_alloc(9), out. 🎀✨

📦 where this page comes from