linux-kernel - [PATCH 1/2] vfs: predict the error in retry

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Message-Id: <20231004111916.728135-2-mjguzik@gmail.com>
Date:   Wed,  4 Oct 2023 13:19:15 +0200
From:   Mateusz Guzik <mjguzik@...il.com>
To:     brauner@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Mateusz Guzik <mjguzik@...il.com>
Subject: [PATCH 1/2] vfs: predict the error in retry_estale as unlikely

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

diff --git a/include/linux/namei.h b/include/linux/namei.h
index 1463cbda4888..689b16f3031b 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -112,7 +112,7 @@ static inline void nd_terminate_link(void *name, size_t len, size_t maxlen)
 static inline bool
 retry_estale(const long error, const unsigned int flags)
 {
-	return error == -ESTALE && !(flags & LOOKUP_REVAL);
+	return unlikely(error == -ESTALE && !(flags & LOOKUP_REVAL));
 }
 
 #endif /* _LINUX_NAMEI_H */
-- 
2.39.2