VM_MAP_CLEAN(9) BSD Kernel Developer's Manual VM_MAP_CLEAN(9)NAME
vm_map_clean -- push dirty pages to their pager
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>
int
vm_map_clean(vm_map_t map, vm_offset_t start, vm_offset_t end, boolean_t syncio, boolean_t invalidate);
DESCRIPTION
The vm_map_clean() function forces any dirty cached pages in the range start to end within the map to be pushed to their underlying pager.
If syncio is TRUE, dirty pages are written synchronously.
If invalidate is TRUE, any cached pages are also freed.
The range provided must be contiguous, it MUST NOT contain holes. The range provided MUST NOT contain any sub-map entries.
IMPLEMENTATION NOTES
This routine holds the Giant lock to prevent multiple entry.
RETURN VALUES
The vm_map_clean() function returns KERN_SUCCESS if successful.
Otherwise, KERN_INVALID_ADDRESS will be returned if the function encountered a sub-map entry; KERN_INVALID_ARGUMENT will be returned if the
function encountered a hole in the region provided, or if an entry could not be found for the given start address.
SEE ALSO vm_map(9)AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.
BSD July 19, 2003 BSD
Check Out this Related Man Page
VM_MAP_PROTECT(9) BSD Kernel Developer's Manual VM_MAP_PROTECT(9)NAME
vm_map_protect -- apply protection bits to a virtual memory region
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>
int
vm_map_protect(vm_map_t map, vm_offset_t start, vm_offset_t end, vm_prot_t new_prot, boolean_t set_max);
DESCRIPTION
The vm_map_protect() function sets the protection bits of the address region bounded by start and end within the map map to new_prot.
If set_max is TRUE, new_prot is treated as the new max_protection setting for each underlying entry. Otherwise, only the protection field is
affected.
The range MUST be contiguous, and MUST NOT contain sub-maps.
IMPLEMENTATION NOTES
The function acquires a lock on the map for the duration, by calling vm_map_lock(9).
RETURN VALUES
The vm_map_protect() function returns KERN_SUCCESS if the protection bits could be set successfully.
If a sub-map entry was encountered in the range, KERN_INVALID_ARGUMENT is returned. If the value of new_prot would exceed max_protection for
an entry within the range, KERN_PROTECTION_FAILURE is returned.
SEE ALSO vm_map(9)AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.
BSD July 19, 2003 BSD
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