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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-22 17:21:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-22 17:21:27 -0700
commitbd28b14591b98f696bc9f94c5ba2e598ca487dfd (patch)
tree5cd165412fa7dec2dbbac28ff6d8d5b12d3011f4 /kernel/futex.c
parent5b09c3edecd37ec1a52fbd5ae97a19734edc7a77 (diff)
downloadlinux-bd28b14591b98f696bc9f94c5ba2e598ca487dfd.tar.bz2
x86: remove more uaccess_32.h complexity
I'm looking at trying to possibly merge the 32-bit and 64-bit versions of the x86 uaccess.h implementation, but first this needs to be cleaned up. For example, the 32-bit version of "__copy_from_user_inatomic()" is mostly the special cases for the constant size, and it's actually almost never relevant. Most users aren't actually using a constant size anyway, and the few cases that do small constant copies are better off just using __get_user() instead. So get rid of the unnecessary complexity. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/futex.c')
-rw-r--r--kernel/futex.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index c20f06f38ef3..ee25f5ba4aca 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -729,7 +729,7 @@ static int get_futex_value_locked(u32 *dest, u32 __user *from)
int ret;
pagefault_disable();
- ret = __copy_from_user_inatomic(dest, from, sizeof(u32));
+ ret = __get_user(*dest, from);
pagefault_enable();
return ret ? -EFAULT : 0;