From cc358fadce7cf565e11cfe19eb1bcb60aa2126c1 Mon Sep 17 00:00:00 2001
From: Gregory Cooke <gregorycooke@google.com>
Date: Fri, 8 Mar 2024 16:12:51 +0000
Subject: [PATCH] Revert "Adding locking around LoadFile in
 FileExternalAccountCredentials"

This reverts commit c51d063ff28b0fd8c4c330e01255e8dc3a045867.
---
 .../external/file_external_account_credentials.cc           | 6 +-----
 .../external/file_external_account_credentials.h            | 1 -
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/core/lib/security/credentials/external/file_external_account_credentials.cc b/src/core/lib/security/credentials/external/file_external_account_credentials.cc
index 6f0fddd0546..6ae3c5a7198 100644
--- a/src/core/lib/security/credentials/external/file_external_account_credentials.cc
+++ b/src/core/lib/security/credentials/external/file_external_account_credentials.cc
@@ -102,11 +102,7 @@ void FileExternalAccountCredentials::RetrieveSubjectToken(
     std::function<void(std::string, grpc_error_handle)> cb) {
   // To retrieve the subject token, we read the file every time we make a
   // request because it may have changed since the last request.
-  absl::StatusOr<Slice> content_slice;
-  {
-    grpc_core::MutexLock l(&m_);
-    content_slice = LoadFile(file_, /*add_null_terminator=*/false);
-  }
+  auto content_slice = LoadFile(file_, /*add_null_terminator=*/false);
   if (!content_slice.ok()) {
     cb("", content_slice.status());
     return;
diff --git a/src/core/lib/security/credentials/external/file_external_account_credentials.h b/src/core/lib/security/credentials/external/file_external_account_credentials.h
index 3bbf82898bf..c8cf12177bd 100644
--- a/src/core/lib/security/credentials/external/file_external_account_credentials.h
+++ b/src/core/lib/security/credentials/external/file_external_account_credentials.h
@@ -52,7 +52,6 @@ class FileExternalAccountCredentials final : public ExternalAccountCredentials {
   std::string file_;
   std::string format_type_;
   std::string format_subject_token_field_name_;
-  grpc_core::Mutex m_;
 };
 
 }  // namespace grpc_core