mas_nomem_nofail(9)

📦 version 7.3.1, in nixpkgs unstable

🍁 mas_nomem_nofail(9) — the Kernel API Manual moment 💅

okay so bestie, welcome to the mas_nomem_nofail(9) page — yes that's the whole title, and yes we're gonna get through it together 🫶 this is a kernel API manual entry and it's lowkey iconic, so grab a lil snack and let's go ✨

🌸 NAME 🌸

mas_nomem_nofail — retries allocations with __GFP_NOFAIL, but ONLY if the maple state has stored the -ENOMEM error. that's the whole vibe: no stored -ENOMEM, no retry. periodt 💅

🦋 SYNOPSIS 🦋

bool mas_nomem_nofail (struct ma_state *mas , unsigned long index ,
unsigned long last );

look at her. three args, returns a bool, main character energy fr fr 👑

🎀 ARGUMENTS 🎀

  • mas — the maple state, obviously. she's the star of the show 💖
  • index — the start of the range for the mas reset 🌈
  • last — the end of the range for the mas reset ⭐

✨ RETURN ✨

so here's the tea ☕:

  • returns false if mas isn't in an -ENOMEM state 🙈
  • returns true if the allocation actually happens — and when it does, the state is reset 🎉
⚠️ important bestie, don't skip this: the internal lock will be dropped, and external locks must allow blocking. like, literally must. no cap. if your locks can't block, this is not the function for you 💀

👑 SEE ALSO 👑

kernel file ./lib/maple_tree.c — and the whole friend group 💜:

and that's the page!! 🧚 this lil gem lives in ./lib and the manual dates it to October 2026, and obviously it's filed under mas_nomem_nofail(9) — slay, bye bestie, go retry those allocations responsibly 💖🌸🦋

📦 where this page comes from