media_reque...k_for_update(9)

📦 version 7.3.1, in nixpkgs unstable

💅 media_request_lock_for_update — bestie edition

okay so this is a page from the Kernel API Manual, and honestly? it's short, it's sweet, it's giving "small function, big responsibilities." Let's get into it 🎀

✨ NAME ✨

media_request_lock_for_update — locks the request so you can, like, actually update the objects inside it. gatekeeping but make it concurrency-safe 🔒

🌸 SYNOPSIS 🌸

int media_request_lock_for_update (struct media_request *req );

yes bestie, that's the whole signature. she's tidy 💅

🦋 ARGUMENTS 🦋

  • req — the media request in question. the main character of this whole operation 👑

⭐ DESCRIPTION ⭐

bestie, listen up, because this one has rules 📋

You call this before you update a request — and "update" here means adding, modifying or removing a request object inside it. that's the whole vibe. no sneaky edits without the lock, okay? 🫶

And here's the part people forget: a reference to the request must be held during the update. not optional, not a suggestion, it's a real requirement 😤 The manpage notes this usually happens automatically through a file handle, so most of the time it's just... handled for you. slay.

When you're done, call media_request_unlock_for_update to let go — don't just hold the lock forever like a raccoon with a snack 🦝

fr fr, remember to unlock. the vibes are immaculate but the deadlock is not 💀

🔥 SEE ALSO 🔥

like I said. a whole friend group 🌈

✨ that's the tea 🍓 this gem lives in ./include/media, and this particular printing is dated October 2026. go forth and lock responsibly, bestie 💖🎀🦋

📦 where this page comes from