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-rw-r--r--arch/x86/include/asm/uaccess.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 30269dafec47..184eb9894dae 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -26,7 +26,12 @@
#define get_ds() (KERNEL_DS)
#define get_fs() (current->thread.addr_limit)
-#define set_fs(x) (current->thread.addr_limit = (x))
+static inline void set_fs(mm_segment_t fs)
+{
+ current->thread.addr_limit = fs;
+ /* On user-mode return, check fs is correct */
+ set_thread_flag(TIF_FSCHECK);
+}
#define segment_eq(a, b) ((a).seg == (b).seg)