diff options
| author | kib <kib@FreeBSD.org> | 2014-06-26 08:30:08 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2014-06-26 08:30:08 +0000 |
| commit | 15d33955d24d5a4bf051e41cff28951c6c2a54f2 (patch) | |
| tree | 2c593f33e1723fee9862fe84487989f08054fd73 /sys/vm/vm_map.c | |
| parent | b371ec04aaeccdccafd21a04b949901c090e50cb (diff) | |
| download | FreeBSD-src-15d33955d24d5a4bf051e41cff28951c6c2a54f2.zip FreeBSD-src-15d33955d24d5a4bf051e41cff28951c6c2a54f2.tar.gz | |
MFC r267630:
Add MAP_EXCL flag for mmap(2).
Diffstat (limited to 'sys/vm/vm_map.c')
| -rw-r--r-- | sys/vm/vm_map.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index 1cc125b..62785f1 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -1407,7 +1407,8 @@ vm_map_fixed(vm_map_t map, vm_object_t object, vm_ooffset_t offset, ("vm_map_fixed: non-NULL backing object for stack")); vm_map_lock(map); VM_MAP_RANGE_CHECK(map, start, end); - (void) vm_map_delete(map, start, end); + if ((cow & MAP_CHECK_EXCL) == 0) + vm_map_delete(map, start, end); if ((cow & (MAP_STACK_GROWS_DOWN | MAP_STACK_GROWS_UP)) != 0) { result = vm_map_stack_locked(map, start, length, sgrowsiz, prot, max, cow); |
