SYNOPSIS
In sys/param.h In sys/systm.h In sys/uio.h In sys/bio.h In sys/buf.h Ft int Fn BUF_LOCK struct buf *bp int locktypeDESCRIPTION
The Fn BUF_LOCK function locks the given buffer. If the lock is already held this call will block until it can acquire the lock unless LK_NOWAIT is set.Its arguments are:
- Fa bp
- The buffer to lock.
- Fa locktype
- Flags controlling the type of lock. See lockmgr(9) for details.