.IX \f4bp_mapout\fP(D3DK)

NAME

bp_mapout − deallocate virtual address space for buffer page list

SYNOPSIS

#include <sys/types.h>
#include <sys/buf.h>
void bp_mapout(struct buf ∗bp);

ARGUMENTS

bpPointer to the buffer header structure. 

DESCRIPTION

This function deallocates the system virtual address space associated with a buffer header page list.  The virtual address space must have been allocated by a previous call to bp_mapin(D3DK).  Drivers should not reference any virtual addresses in the mapped range after bp_mapout has been called. 

RETURN VALUE

None. 

LEVEL

Base or Interrupt. 

NOTES

Driver-defined basic locks, read/write locks, and sleep locks may be held across calls to this function. 

SEE ALSO

bp_mapin(D3DK), buf(D4DK)

DDI/DKI