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Extend the scope of the vm_object locking in vm_object_split().

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This commit is contained in:
Alan Cox 2003-05-01 05:06:33 +00:00
parent ec4eecb60b
commit 8e3a76fb6f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=114387
1 changed files with 4 additions and 4 deletions
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8
sys/vm/vm_object.c
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@ -1185,17 +1185,18 @@ vm_object_split(vm_map_entry_t entry)
source = orig_object->backing_object;
if (source != NULL) {
vm_object_reference(source); /* Referenced by new_object */
VM_OBJECT_LOCK(source);
TAILQ_INSERT_TAIL(&source->shadow_head,
new_object, shadow_list);
VM_OBJECT_LOCK(source);
source->shadow_count++;
source->generation++;
vm_object_clear_flag(source, OBJ_ONEMAPPING);
VM_OBJECT_UNLOCK(source);
new_object->backing_object_offset =
orig_object->backing_object_offset + offset;
new_object->backing_object = source;
source->shadow_count++;
source->generation++;
}
VM_OBJECT_LOCK(orig_object);
for (idx = 0; idx < size; idx++) {
retry:
m = vm_page_lookup(orig_object, offidxstart + idx);
@ -1219,7 +1220,6 @@ vm_object_split(vm_map_entry_t entry)
vm_page_busy(m);
vm_page_unlock_queues();
}
VM_OBJECT_LOCK(orig_object);
if (orig_object->type == OBJT_SWAP) {
vm_object_pip_add(orig_object, 1);
VM_OBJECT_UNLOCK(orig_object);