diff options
Diffstat (limited to 'vm/vm_user.c')
| -rw-r--r-- | vm/vm_user.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/vm/vm_user.c b/vm/vm_user.c index 6c1e3d6f..b6a069a5 100644 --- a/vm/vm_user.c +++ b/vm/vm_user.c @@ -39,8 +39,10 @@ #include <mach/vm_param.h> #include <mach/vm_statistics.h> #include <mach/vm_cache_statistics.h> +#include <mach/vm_sync.h> #include <kern/host.h> #include <kern/task.h> +#include <kern/mach.server.h> #include <vm/vm_fault.h> #include <vm/vm_kern.h> #include <vm/vm_map.h> @@ -479,3 +481,53 @@ kern_return_t vm_wire_all(const ipc_port_t port, vm_map_t map, vm_wire_t flags) return vm_map_pageable_all(map, flags); } + +/* + * vm_object_sync synchronizes out pages from the memory object to its + * memory manager, if any. + */ +kern_return_t vm_object_sync( + vm_object_t object, + vm_offset_t offset, + vm_size_t size, + boolean_t should_flush, + boolean_t should_return, + boolean_t should_iosync) +{ + if (object == VM_OBJECT_NULL) + return KERN_INVALID_ARGUMENT; + + /* FIXME: we should rather introduce an internal function, e.g. + vm_object_update, rather than calling memory_object_lock_request. */ + vm_object_reference(object); + + /* This is already always synchronous for now. */ + (void) should_iosync; + + size = round_page(offset + size) - trunc_page(offset); + offset = trunc_page(offset); + + return memory_object_lock_request(object, offset, size, + should_return ? + MEMORY_OBJECT_RETURN_ALL : + MEMORY_OBJECT_RETURN_NONE, + should_flush, + VM_PROT_NO_CHANGE, + NULL, 0); +} + +/* + * vm_msync synchronizes out pages from the map to their memory manager, + * if any. + */ +kern_return_t vm_msync( + vm_map_t map, + vm_address_t address, + vm_size_t size, + vm_sync_t sync_flags) +{ + if (map == VM_MAP_NULL) + return KERN_INVALID_ARGUMENT; + + return vm_map_msync(map, (vm_offset_t) address, size, sync_flags); +} |