gen_pool_has_addr(9)

📦 version 7.3.1, in nixpkgs unstable

💖 gen_pool_has_addr(9) 💖

okay bestie, welcome to the Kernel API Manual — this one's a tiny little function from the kernel, and honestly? she's a vibe check for addresses. let's get into it ✨

🌸 NAME 🌸

gen_pool_has_addr — checks if an address falls within the range of a pool

like... is this address in the pool or not? that's the whole gig 🫶

🎀 SYNOPSIS 🎀

bool gen_pool_has_addr (struct gen_pool *pool , unsigned long start ,
       size_t size );

she takes three things and gives you back a bool. simple. iconic. no notes 💅

🦋 ARGUMENTS 🦋

  • pool — the generic memory pool, aka the actual pool we're interrogating 🔍
  • start — start address, the beginning of the region you're asking about
  • size — size of the region, so we know how far the range stretches 🍓

⭐ DESCRIPTION ⭐

so here's the tea: this function checks if the range of addresses falls within the specified pool. that's it, that's the job 💀

returns true if the entire range is contained in the pool, and false otherwise. and yes bestie, i said entire — it's all-or-nothing, no partial credit, no "well most of it's in there" situations 🙈

fr fr: the whole range has to fit inside the pool for you to get a true. half in, half out = false. periodt.

🔥 SEE ALSO 🔥

the kernel file is ./lib/genalloc.c, and here's the whole friend group — go say hi 👑:

💜 sign-off 💜

and that's the page!! she lives in ./lib, dated October 2026, part of the Kernel API Manual, and you can find her under the name gen_pool_has_addr(9) anytime you need her 🌈💖 mwah, go check those addresses bestie 🧚✨

📦 where this page comes from