svn commit: r326076 - user/jeff/numa/sys/vm
Jeff Roberson
jeff at FreeBSD.org
Tue Nov 21 21:16:49 UTC 2017
Author: jeff
Date: Tue Nov 21 21:16:48 2017
New Revision: 326076
URL: https://svnweb.freebsd.org/changeset/base/326076
Log:
Update for r325992
Just return if the caller specifies a zero size. This can happen when
kmem_back fails to allocate the first page.
Modified:
user/jeff/numa/sys/vm/vm_kern.c
Modified: user/jeff/numa/sys/vm/vm_kern.c
==============================================================================
--- user/jeff/numa/sys/vm/vm_kern.c Tue Nov 21 20:46:21 2017 (r326075)
+++ user/jeff/numa/sys/vm/vm_kern.c Tue Nov 21 21:16:48 2017 (r326076)
@@ -528,6 +528,8 @@ _kmem_unback(vm_object_t object, vm_offset_t addr, vm_
KASSERT(object == kernel_object,
("kmem_unback: only supports kernel object."));
+ if (size == 0)
+ return 0;
pmap_remove(kernel_pmap, addr, addr + size);
offset = addr - VM_MIN_KERNEL_ADDRESS;
end = offset + size;
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