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From:   Will Deacon <will@kernel.org>
To:     linux-kernel@vger.kernel.org
Cc:     Will Deacon <will@kernel.org>, Kees Cook <keescook@chromium.org>,
        Ingo Molnar <mingo@kernel.org>,
        Elena Reshetova <elena.reshetova@intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Hanjun Guo <guohanjun@huawei.com>
Subject: [RESEND PATCH v4 07/10] lib/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions
Date:   Thu, 21 Nov 2019 11:58:59 +0000
Message-Id: <20191121115902.2551-8-will@kernel.org>
In-Reply-To: <20191121115902.2551-1-will@kernel.org>
References: <20191121115902.2551-1-will@kernel.org>
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The definitions of REFCOUNT_MAX and REFCOUNT_SATURATED are the same,
regardless of CONFIG_REFCOUNT_FULL, so consolidate them into a single
pair of definitions.

Cc: Ingo Molnar <mingo@kernel.org>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Will Deacon <will@kernel.org>
---
 include/linux/refcount.h | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/include/linux/refcount.h b/include/linux/refcount.h
index 1cd0a876a789..757d4630115c 100644
--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -22,6 +22,8 @@ typedef struct refcount_struct {
 } refcount_t;
 
 #define REFCOUNT_INIT(n)	{ .refs = ATOMIC_INIT(n), }
+#define REFCOUNT_MAX		INT_MAX
+#define REFCOUNT_SATURATED	(INT_MIN / 2)
 
 enum refcount_saturation_type {
 	REFCOUNT_ADD_NOT_ZERO_OVF,
@@ -57,9 +59,6 @@ static inline unsigned int refcount_read(const refcount_t *r)
 #ifdef CONFIG_REFCOUNT_FULL
 #include <linux/bug.h>
 
-#define REFCOUNT_MAX		INT_MAX
-#define REFCOUNT_SATURATED	(INT_MIN / 2)
-
 /*
  * Variant of atomic_t specialized for reference counts.
  *
@@ -300,10 +299,6 @@ static inline void refcount_dec(refcount_t *r)
 		refcount_warn_saturate(r, REFCOUNT_DEC_LEAK);
 }
 #else /* CONFIG_REFCOUNT_FULL */
-
-#define REFCOUNT_MAX		INT_MAX
-#define REFCOUNT_SATURATED	(INT_MIN / 2)
-
 # ifdef CONFIG_ARCH_HAS_REFCOUNT
 #  include <asm/refcount.h>
 # else
-- 
2.24.0.432.g9d3f5f5b63-goog