FuseDaemon: Make Acquire atomic with Lookup.

Otherwise, we will suffer from race conditions caused by
the following sequence of events on racing threads T1 and T2.

T1: p2 = LookupChildByName(p1);
T2: p2->Release() -> delete p2 (if refcount_ == 0);
T1: p2->Acquire()

Test: atest fuse_node_test
Test: fs-stress run for 14 hours with no errors.
Bug: 148709965
Change-Id: Ic3f2e78e386e523966b69c45320a59b8f2f77f91

1 files changed, 1 insertions, 1 deletions

diff --git a/jni/node.cpp b/jni/node.cpp
index 1974a9129..8898b7b5b 100644
--- a/jni/node.cpp
+++ b/jni/node.cpp
@@ -68,7 +68,7 @@ const node* node::LookupAbsolutePath(const node* root, const std::string& absolu
 
     const node* node = root;
     for (const std::string& segment : segments) {
-        node = node->LookupChildByName(segment);
+        node = node->LookupChildByName(segment, false /* acquire */);
         if (!node) {
             return nullptr;
         }