osf1 man page for buf_unlock

BUF_UNLOCK(9r)															    BUF_UNLOCK(9r)

NAME
       BUF_UNLOCK - General: Unlocks the specified I/O buffer

SYNOPSIS
       void BUF_UNLOCK(
	       struct buf *bp );

ARGUMENTS
       Specifies a pointer to a buf structure.

DESCRIPTION
       The  BUF_UNLOCK	routine  unlocks  the specified I/O buffer that was locked in a previous call to BUF_LOCK.  The routine masks all disk and
       tape controller interrupts (by calling the splbio routine). It resets the mutual exclusion buffer lock member, b_lock, of the specified buf
       structure pointer.

       The  BUF_UNLOCK	routine  then  resets  the b_flags member of the specified buf structure pointer to indicate that this buffer is not being
       used. Finally, BUF_UNLOCK resets the CPU priority level (by calling the splx routine).

NOTES
       You must have locked the specified I/O buffer by calling BUF_LOCK prior to calling the BUF_UNLOCK routine.

RETURN VALUES
       None

SEE ALSO
       Routines: BUF_LOCK(9r)

																    BUF_UNLOCK(9r)