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authorIan Moffett <ian@osmora.org>2024-04-16 20:21:16 -0400
committerIan Moffett <ian@osmora.org>2024-04-16 20:21:16 -0400
commit145bbb28313dd2ecb166946351c098f3118789e4 (patch)
tree8cf0509354b1565687889f8a719011646ceb134c /sys/vm
parentb287dd77d65fa197079d885b141b60476c63cd7a (diff)
kernel: vm_map: Allocate physmem for MAP_ANONYMOUS
Only allocate physical memory during an anonymous map request Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/vm')
-rw-r--r--sys/vm/vm_map.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c
index 266d696..49d1149 100644
--- a/sys/vm/vm_map.c
+++ b/sys/vm/vm_map.c
@@ -187,11 +187,6 @@ mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)
/* Invalid prot */
return MAP_FAILED;
- /* Allocate the physical memory */
- physmem = vm_alloc_pageframe(len / GRANULE);
- if (physmem == 0)
- return MAP_FAILED;
-
/*
* Handle address being NULL.
*
@@ -204,6 +199,11 @@ mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)
/* Handle an anonymous map request */
if (__TEST(flags, MAP_ANONYMOUS)) {
+ /* Allocate the physical memory */
+ physmem = vm_alloc_pageframe(len / GRANULE);
+ if (physmem == 0)
+ return MAP_FAILED;
+
/*
* XXX: There is no need to worry about alignment yet
* as vm_map_create() handles that internally.