From bd28b14591b98f696bc9f94c5ba2e598ca487dfd Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 22 May 2016 17:21:27 -0700 Subject: 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 --- mm/maccess.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'mm') diff --git a/mm/maccess.c b/mm/maccess.c index d159b1c96e48..78f9274dd49d 100644 --- a/mm/maccess.c +++ b/mm/maccess.c @@ -96,8 +96,7 @@ long strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count) pagefault_disable(); do { - ret = __copy_from_user_inatomic(dst++, - (const void __user __force *)src++, 1); + ret = __get_user(*dst++, (const char __user __force *)src++); } while (dst[-1] && ret == 0 && src - unsafe_addr < count); dst[-1] = '\0'; -- cgit v1.2.3