[PATCH v2 02/10] arm64: uaccess s/might_sleep/might_fault/

From: Michael S. Tsirkin
Date: Thu May 16 2013 - 07:12:00 EST


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

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
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; \
--
MST

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