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-rw-r--r--mm/maccess.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/mm/maccess.c b/mm/maccess.c
index 9073695ff25f..4e348dbaecd7 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -14,7 +14,11 @@
14 * Safely read from address @src to the buffer at @dst. If a kernel fault 14 * Safely read from address @src to the buffer at @dst. If a kernel fault
15 * happens, handle that and return -EFAULT. 15 * happens, handle that and return -EFAULT.
16 */ 16 */
17long probe_kernel_read(void *dst, void *src, size_t size) 17
18long __weak probe_kernel_read(void *dst, void *src, size_t size)
19 __attribute__((alias("__probe_kernel_read")));
20
21long __probe_kernel_read(void *dst, void *src, size_t size)
18{ 22{
19 long ret; 23 long ret;
20 mm_segment_t old_fs = get_fs(); 24 mm_segment_t old_fs = get_fs();
@@ -39,7 +43,10 @@ EXPORT_SYMBOL_GPL(probe_kernel_read);
39 * Safely write to address @dst from the buffer at @src. If a kernel fault 43 * Safely write to address @dst from the buffer at @src. If a kernel fault
40 * happens, handle that and return -EFAULT. 44 * happens, handle that and return -EFAULT.
41 */ 45 */
42long notrace __weak probe_kernel_write(void *dst, void *src, size_t size) 46long __weak probe_kernel_write(void *dst, void *src, size_t size)
47 __attribute__((alias("__probe_kernel_write")));
48
49long __probe_kernel_write(void *dst, void *src, size_t size)
43{ 50{
44 long ret; 51 long ret;
45 mm_segment_t old_fs = get_fs(); 52 mm_segment_t old_fs = get_fs();