BUF_UNLOCK(9)

📦 version 12.2, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 BUF_UNLOCK(9) — Kernel Developer's Manual 💖

okay bestie, so this one is from the Kernel Developer's Manual, section 9 — the big-kid kernel section, iykyk 🧚

✨ NAME ✨

BUF_UNLOCK — unlocks a locked buffer 🔓

like. it literally does the one thing. it unlocks the buffer. no cap.

🌸 SYNOPSIS 🌸

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/bio.h>
#include <sys/buf.h>

void
BUF_UNLOCK(struct buf *bp);

look at all those includes, she's thorough 💅 every single one stays, don't skip them, they're not decor they're load-bearing.

🎀 DESCRIPTION 🎀

The BUF_UNLOCK() function unlocks a buffer that was previously locked with BUF_LOCK() or BUF_TIMELOCK().

that's the whole vibe. lock it, then unlock it. the circle of life. 🦋

Its argument is:

  • bp — the buffer to unlock. the buffer must already be locked. 👑
okay so real talk: if you call this on a buffer that isn't locked, you're not being cute, you're being chaotic. it says "must already be locked" and it means it. lock her first. 🔥

🌈 SEE ALSO 🌈

go read BUF_LOCK(9) and BUF_TIMELOCK(9) too, they're the prequel, you can't just watch the last episode bestie 😭

👑 AUTHORS 👑

This manual page was written by Chad David <davidc@acns.ab.ca>.

Chad. iconic name, iconic contribution, we love him for it. 🫶

and that's the tea, bestie — this page is from Debian, dated July 9, 2001, and it's still out here doing its lil job in the kernel docs. go forth and unlock responsibly 💖✨🎀

📦 where this page comes from