BUF_LOCKFREE(9)

💅 BUF_LOCKFREE(9) — bestie edition

okay so you found your way into the Kernel Developer's Manual and you wanna know about BUF_LOCKFREE — the macro that yeets a buffer lock into the void. no cap, that's literally the whole vibe. let's get into it ✨

🌸 NAME 🌸

BUF_LOCKFREE — destroys a buffer's lock 🫶

✨ SYNOPSIS ✨

bestie you gotta bring the right headers to the function. don't show up empty-handed 💅

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

void
BUF_LOCKFREE(struct buf *bp);

🦋 DESCRIPTION 🦋

The BUF_LOCKFREE() macro destroys the buffer lock. that's it. that's the job. it's giving "demolition crew but for locks" 🎀

⚠️ THE LOCK MUST NOT BE HELD WHEN THIS MACRO IS CALLED — or a panic will result. and not the fun kind of panic. the kernel kind. 💀 like, do NOT call this while you're still holding the lock, fr fr. that's the whole boundary and you must respect it.

Its argument is:

• bp — the buffer whose lock is to be destroyed. yes queen, hand over the buffer, we're taking its lock out back 🌈

👑 SEE ALSO 👑

the whole squad, all linked up 🫶

• buf(9)
• BUF_LOCK(9)
• BUF_TIMELOCK(9)
• BUF_UNLOCK(9)
• lockdestroy(9)

💖 AUTHORS 💖

This manual page was written by Chad David <davidc@acns.ab.ca>. iconic behavior honestly, thank you for your service 🫡✨

and that's the whole page bestie, you ate it 💅🌸

Debian · July 9, 2001 · BUF_LOCKFREE(9) — periodt, no notes, go free those locks (safely!!) 🦋🎀