is_valid_state(9)

💅 is_valid_state(9) — Kernel API Manual 💅

okay so bestie, welcome to the is_valid_state(9) page from the Kernel API Manual. It’s short, it’s sweet, and it’s giving “tiny function, very important vibe check.” Let’s go ✨

🌸 NAME 🌸

is_valid_state — returns an SS_ error code if ns is not valid. periodt 💖

✨ SYNOPSIS ✨

enum drbd_state_rv is_valid_state (struct drbd_device *device , union
       drbd_state ns );

That’s the function signature, verbatim — no edits, no remix 🎀

🎀 ARGUMENTS 🎀

• device — DRBD device. 💅
• ns — state to consider. 🦋

🦋 SEE ALSO 🦋

Kernel file ./drivers/block/drbd/drbd_state.c — and the rest of the squad:

• cl_wide_st_chg(9)
• drbd_force_state(9)
• drbd_req_state(9)
• _drbd_request_state(9)
• is_valid_soft_transition(9)
• is_valid_transition(9)
• sanitize_state(9)
• _drbd_set_state(9)
• after_state_ch(9)

that’s the whole page, bestie 🫶 source/version: ./drivers/block/drbd · date: October 2026 · page: is_valid_state(9) 💖