linux-kernel - [PATCH 2/3] fs: predict not having to do anything in fdput()

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Message-ID: <20250406235806.1637000-2-mjguzik@gmail.com>
Date: Mon,  7 Apr 2025 01:58:05 +0200
From: Mateusz Guzik <mjguzik@...il.com>
To: brauner@...nel.org
Cc: viro@...iv.linux.org.uk,
	jack@...e.cz,
	linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	Mateusz Guzik <mjguzik@...il.com>
Subject: [PATCH 2/3] fs: predict not having to do anything in fdput()

This matches the annotation in fdget().

Signed-off-by: Mateusz Guzik <mjguzik@...il.com>
---
 include/linux/file.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/file.h b/include/linux/file.h
index 302f11355b10..af1768d934a0 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -59,7 +59,7 @@ static inline struct fd CLONED_FD(struct file *f)
 
 static inline void fdput(struct fd fd)
 {
-	if (fd.word & FDPUT_FPUT)
+	if (unlikely(fd.word & FDPUT_FPUT))
 		fput(fd_file(fd));
 }
 
-- 
2.43.0