From 6cb92dc4197357c95891243eab0ce293cd88d8fc Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <wedsonaf@google.com>
Date: Mon, 29 Mar 2021 12:28:56 +0100
Subject: [PATCH] Implementers of `FileOperations` need to be `Send` as well.

---
 rust/kernel/file_operations.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/file_operations.rs b/rust/kernel/file_operations.rs
index 24d6f9ed0a41f4..2784298f71b0ea 100644
--- a/rust/kernel/file_operations.rs
+++ b/rust/kernel/file_operations.rs
@@ -415,8 +415,9 @@ impl IoctlCommand {
 /// You implement this trait whenever you would create a `struct file_operations`.
 ///
 /// File descriptors may be used from multiple threads/processes concurrently, so your type must be
-/// [`Sync`].
-pub trait FileOperations: Sync + Sized {
+/// [`Sync`]. It must also be [`Send`] because [`FileOperations::release`] will be called from the
+/// thread that decrements that associated file's refcount to zero.
+pub trait FileOperations: Send + Sync + Sized {
     /// The methods to use to populate [`struct file_operations`].
     const TO_USE: ToUse;