bp_mapout(D3) bp_mapout(D3)
NAME
bp_mapout - deallocate virtual address space for buffer page
list
SYNOPSIS
#include <sys/types.h>
#include <sys/buf.h>
#include <sys/ddi.h>
void bp_mapout(struct buf_t *bp);
Arguments
bp Pointer to the buffer header structure.
DESCRIPTION
The bp_mapout function deallocates the system virtual address
space associated with a buffer header page list.
Return Values
None
USAGE
The virtual address space must have been allocated by a
previous call to bp_mapin(D3). Drivers should not reference
any virtual addresses in the mapped range after bp_mapout has
been called.
Level
Base or Interrupt.
Synchronization Constraints
Does not sleep.
Driver-defined basic locks, read/write locks, and sleep locks
may be held across calls to this function.
REFERENCES
bp_mapin(D3), buf(D4)
NOTICES
Portability
All processors
Applicability
ddi: 1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp
Copyright 1994 Novell, Inc. Page 1