new helper: uaccess_kernel()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-03-20 21:08:07 -04:00
parent aaa2e7ac80
commit db68ce10c4
32 changed files with 44 additions and 42 deletions
@@ -76,7 +76,7 @@ DECLARE_PER_CPU(struct exception_data, exception_data);
 		goto label;						\
 } while (0)

-#define get_user_space() (segment_eq(get_fs(), KERNEL_DS) ? 0 : mfsp(3))
+#define get_user_space() (uaccess_kernel() ? 0 : mfsp(3))
 #define get_kernel_space() (0)

 #define MERGE(w0, sh_1, w1, sh_2)  ({					\