kernel/vm: Always use uint64 for memory amounts.

We want to be able to support more than 4GB of swap even on 32-bit.

Change-Id: I52c3aa8c0b77bbbd60a9b9ac37a4a7ad254aa201
Reviewed-on: https://review.haiku-os.org/c/haiku/+/11335
Reviewed-by: waddlesplash <[email protected]>
(cherry picked from commit e4c6bf453d4be138dbc8dd81a687c548cec6afdc)
Reviewed-on: https://review.haiku-os.org/c/haiku/+/11336

headers/private/kernel/vm/vm_priv.h

@@ -42,11 +42,11 @@ status_t vm_map_cache(VMAddressSpace* addressSpace,
 status_t vm_unmap_address_range(VMAddressSpace* addressSpace,
 	addr_t address, addr_t size, bool kernel);
 
-void vm_unreserve_memory(size_t bytes);
-status_t vm_try_reserve_memory(size_t bytes, int priority, bigtime_t timeout);
+void vm_unreserve_memory(uint64 bytes);
+status_t vm_try_reserve_memory(uint64 bytes, int priority, bigtime_t timeout);
 
-void vm_unreserve_memory_or_swap(size_t bytes);
-status_t vm_try_reserve_memory_or_swap(size_t bytes, int priority, bigtime_t timeout);
+void vm_unreserve_memory_or_swap(uint64 bytes);
+status_t vm_try_reserve_memory_or_swap(uint64 bytes, int priority, bigtime_t timeout);
 
 void vm_debug_init();
 void vm_kernel_args_init_post_area(kernel_args* args);

src/system/kernel/vm/vm.cpp

@@ -4401,7 +4401,7 @@ vm_kernel_address_space_left(void)
 
 
 void
-vm_unreserve_memory(size_t amount)
+vm_unreserve_memory(uint64 amount)
 {
 	ASSERT((amount % B_PAGE_SIZE) == 0);
 
@@ -4418,7 +4418,7 @@ vm_unreserve_memory(size_t amount)
 
 #if ENABLE_SWAP_SUPPORT
 void
-vm_unreserve_memory_or_swap(size_t amount)
+vm_unreserve_memory_or_swap(uint64 amount)
 {
 	ASSERT((amount % B_PAGE_SIZE) == 0);
 
@@ -4489,7 +4489,7 @@ vm_try_reserve_internal(int64& pool, uint32 resource,
 
 
 status_t
-vm_try_reserve_memory(size_t amount, int priority, bigtime_t timeout)
+vm_try_reserve_memory(uint64 amount, int priority, bigtime_t timeout)
 {
 	timeout += system_time();
 
@@ -4515,7 +4515,7 @@ vm_try_reserve_memory(size_t amount, int priority, bigtime_t timeout)
 
 #if ENABLE_SWAP_SUPPORT
 status_t
-vm_try_reserve_memory_or_swap(size_t amount, int priority, bigtime_t timeout)
+vm_try_reserve_memory_or_swap(uint64 amount, int priority, bigtime_t timeout)
 {
 	timeout += system_time();