linux-kernel - [tip:sched/mm] arm64: uaccess s/might_sleep/might

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Date:	Tue, 28 May 2013 06:15:40 -0700
From:	"tip-bot for Michael S. Tsirkin" <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	a.p.zijlstra@...llo.nl, torvalds@...ux-foundation.org,
	catalin.marinas@....com, mst@...hat.com, peterz@...radead.org,
	akpm@...ux-foundation.org, tglx@...utronix.de
Subject: [tip:sched/mm] arm64: uaccess s/might_sleep/might_fault/

Commit-ID:  56d2ef789f7c424918abdf6b95d84a64c1473220
Gitweb:     http://git.kernel.org/tip/56d2ef789f7c424918abdf6b95d84a64c1473220
Author:     Michael S. Tsirkin <mst@...hat.com>
AuthorDate: Sun, 26 May 2013 17:30:42 +0300
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 28 May 2013 09:41:06 +0200

arm64: uaccess s/might_sleep/might_fault/

The only reason uaccess routines might sleep
is if they fault. Make this explicit.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Acked-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Peter Zijlstra <peterz@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1369577426-26721-2-git-send-email-mst@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/arm64/include/asm/uaccess.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 008f848..edb3d5c 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -166,7 +166,7 @@ do {									\
 
 #define get_user(x, ptr)						\
 ({									\
-	might_sleep();							\
+	might_fault();							\
 	access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) ?			\
 		__get_user((x), (ptr)) :				\
 		((x) = 0, -EFAULT);					\
@@ -227,7 +227,7 @@ do {									\
 
 #define put_user(x, ptr)						\
 ({									\
-	might_sleep();							\
+	might_fault();							\
 	access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) ?		\
 		__put_user((x), (ptr)) :				\
 		-EFAULT;						\
--
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