NAME    [Toc]    [Back]

       brelse - General: Deallocates a buf structure

SYNOPSIS    [Toc]    [Back]

       void brelse(
               register struct buf *bp );

ARGUMENTS    [Toc]    [Back]

       Specifies  a  pointer  to a buf structure.  This structure
       contains information such as the binary status flags,  the
       major/minor device numbers, and the address of the associated
 buffer. This buffer is always a special buffer header
       owned exclusively by the device for handling I/O requests.

DESCRIPTION    [Toc]    [Back]

       The brelse routine deallocates a buf  structure  that  was
       previously  allocated  by  the  getnewbuf routine. The buf
       structure contains information describing an I/O  request.
       Device  drivers  call  the  brelse  routine  after the I/O
       request has completed to free the memory used by  the  buf
       structure.

RETURN VALUES    [Toc]    [Back]

       None

SEE ALSO    [Toc]    [Back]

       Routines: getnewbuf(9r)

       Data Structures: buf(9s)



                                                       brelse(9r)