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Code Issues Releases Activity

Eliminate an unnecessary check from vm_fault_prefault().

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This commit is contained in:
Alan Cox 2009-10-25 17:30:50 +00:00
parent 573cb89b8d
commit 36930fc947
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=198472
1 changed files with 2 additions and 2 deletions
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4
sys/vm/vm_fault.c
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@ -1011,8 +1011,8 @@ vm_fault_prefault(pmap_t pmap, vm_offset_t addra, vm_map_entry_t entry)
while ((m = vm_page_lookup(lobject, pindex)) == NULL &&
lobject->type == OBJT_DEFAULT &&
(backing_object = lobject->backing_object) != NULL) {
if (lobject->backing_object_offset & PAGE_MASK)
break;
KASSERT((lobject->backing_object_offset & PAGE_MASK) ==
0, ("vm_fault_prefault: unaligned object offset"));
pindex += lobject->backing_object_offset >> PAGE_SHIFT;
VM_OBJECT_LOCK(backing_object);
VM_OBJECT_UNLOCK(lobject);