From 5c064d3e8e575b2397270cb635c7c93ed265fb5a Mon Sep 17 00:00:00 2001
From: Idan Horowitz <idan.horowitz@gmail.com>
Date: Sat, 9 Apr 2022 23:08:20 +0300
Subject: [PATCH] Kernel: Remove big lock from sys$rmdir

This syscall doesn't access any unprotected shared data.
---
 Kernel/API/Syscall.h      | 2 +-
 Kernel/Syscalls/rmdir.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Kernel/API/Syscall.h b/Kernel/API/Syscall.h
index 9284e22647..cb91e67441 100644
--- a/Kernel/API/Syscall.h
+++ b/Kernel/API/Syscall.h
@@ -143,7 +143,7 @@ enum class NeedsBigProcessLock {
     S(recvfd, NeedsBigProcessLock::No)                      \
     S(recvmsg, NeedsBigProcessLock::Yes)                    \
     S(rename, NeedsBigProcessLock::Yes)                     \
-    S(rmdir, NeedsBigProcessLock::Yes)                      \
+    S(rmdir, NeedsBigProcessLock::No)                       \
     S(sched_getparam, NeedsBigProcessLock::No)              \
     S(sched_setparam, NeedsBigProcessLock::No)              \
     S(sendfd, NeedsBigProcessLock::No)                      \
diff --git a/Kernel/Syscalls/rmdir.cpp b/Kernel/Syscalls/rmdir.cpp
index 7002115c28..32f943f0c4 100644
--- a/Kernel/Syscalls/rmdir.cpp
+++ b/Kernel/Syscalls/rmdir.cpp
@@ -12,7 +12,7 @@ namespace Kernel {
 
 ErrorOr<FlatPtr> Process::sys$rmdir(Userspace<char const*> user_path, size_t path_length)
 {
-    VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
+    VERIFY_NO_PROCESS_BIG_LOCK(this)
     TRY(require_promise(Pledge::cpath));
     auto path = TRY(get_syscall_path_argument(user_path, path_length));
     TRY(VirtualFileSystem::the().rmdir(path->view(), current_directory()));