mnt_get_write_access(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mnt_get_write_access — get write access to a mount without freeze protection ✨

ok so bestie, welcome to mnt_get_write_access(9), straight out of the Kernel API Manual (that's section 9, kernel API land, very internal, very main-character). sit down, hydrate, and let's get into it 🫶

✨ NAME ✨

mnt_get_write_access — get write access to a mount without freeze protection 🧊

🌸 SYNOPSIS 🌸

int mnt_get_write_access(struct vfsmount *m);

🎀 ARGUMENTS 🎀

  • m — the mount you're trying to take a write on, like, the actual struct vfsmount * in question 💫

🦋 DESCRIPTION 🦋

okay so here's the vibe: this function tells the low-level filesystem that a write is about to happen to it 👀 — and it makes sure that writes are actually allowed first (as in, the mount is read-write) before it comes back with success. gatekeeping, but make it responsible 💅

lowkey important: this operation does not protect against the filesystem being frozen. 😭 like, that's just not what it does. don't come for her.

and when your write operation is finally finished? you must call mnt_put_write_access. no cap, it's required — the two are a matched set, bestie 🤝

this thing is effectively a refcount, periodt. get it, do the write, put it back. balanced. iconic. 🌈

⭐ SEE ALSO ⭐

Kernel file ./fs/namespace.c — plus the whole friend group, fr fr 🫶

mwah 💋 this page came straight from the ./fs source, dated October 2026, and it's serving kernel-API realness. go get that write access, queen 👑

📦 where this page comes from