linux-kernel - [PATCH] x86/uaccess: Remove unused __addr

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Date:   Mon, 25 Feb 2019 20:11:09 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Andy Lutomirski <luto@...nel.org>, Jann Horn <jannh@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        "Tobin C. Harding" <tobin@...nel.org>
Subject: [PATCH] x86/uaccess: Remove unused __addr_ok() macro

From: Borislav Petkov <bp@...e.de>

This was caught while staring at the whole {set,get}_fs() machinery.

No functional changes.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Jann Horn <jannh@...gle.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: the arch/x86 maintainers <x86@...nel.org>
Cc: "Tobin C. Harding" <tobin@...nel.org>
---
 arch/x86/include/asm/uaccess.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 780f2b42c8ef..e2ffedd51fd8 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -35,10 +35,7 @@ static inline void set_fs(mm_segment_t fs)
 }
 
 #define segment_eq(a, b)	((a).seg == (b).seg)
-
 #define user_addr_max() (current->thread.addr_limit.seg)
-#define __addr_ok(addr) 	\
-	((unsigned long __force)(addr) < user_addr_max())
 
 /*
  * Test whether a block of memory is a valid user space address.
-- 
2.21.0