vfs: predict the error in retry_estale as unlikely

mjguzik · brauner · commit 95e93d17cb11 · 2023-10-19T11:02:49.000+02:00
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://lore.kernel.org/r/20231004111916.728135-2-mjguzik@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
diff --git a/include/linux/namei.h b/include/linux/namei.h
@@ -136,7 +136,7 @@ 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 */

Original file line number	Diff line number	Diff line change
`@@ -136,7 +136,7 @@ static inline void nd_terminate_link(void *name, size_t len, size_t maxlen)`
`136`	`136`	`static inline bool`
`137`	`137`	`retry_estale(const long error, const unsigned int flags)`
`138`	`138`	`{`
`139`		`- return error == -ESTALE && !(flags & LOOKUP_REVAL);`
	`139`	`+ return unlikely(error == -ESTALE && !(flags & LOOKUP_REVAL));`
`140`	`140`	`}`
`141`	`141`
`142`	`142`	`#endif /* _LINUX_NAMEI_H */`