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 <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 008f8481da65d97d5022c3763ec8ba909e9d38b8..edb3d5c73a3232c35532bd5e489add1cabf7201c 100644 (file)
--- 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;                                                \