vma_start_write_killable(9)

📦 version 7.3.1, in nixpkgs unstable

💖 vma_start_write_killable(9) — Kernel API Manual 💖

okay bestie, welcome to the Kernel API Manual page for vma_start_write_killable(9). this one is all about beginning a write to a VMA — locking girlies, this is literally your moment 🦋✨

🌸 NAME 🌸

vma_start_write_killable — Begin writing to a VMA. 💅

✨ SYNOPSIS ✨

int vma_start_write_killable (struct vm_area_struct *vma );

🎀 ARGUMENTS 🎀

  • vma — The VMA we are going to modify. 👑

🦋 DESCRIPTION 🦋

okay so the whole vibe: exclude concurrent readers under the per-VMA lock until the currently write-locked mmap_lock is dropped or downgraded. that's it, that's the job, and it ate 🔥

💅 CONTEXT 💅

this one may sleep 😴 while waiting for readers to drop the vma read lock. and the caller must already hold the mmap_lock for write — like, literally before you call this, bestie, no cap fr fr 🫶

🔥 RETURN 🔥

  • 0 — for a successful acquisition. slay 🎉
  • -EINTR — if a fatal signal was received. 💀

👑 SEE ALSO 👑

kernel file: ./include/linux/mmap_lock.h 📁

the besties to check out:

and that's the page, bestie 🫶 source/version ./include/linux, dated October 2026, for the vma_start_write_killable(9) manual — mwah 💋✨

📦 where this page comes from