s390/mm: uninline copy_oldmem_kernel() function

Uninline copy_oldmem_kernel() function and make it consistent
with a very similar memcpy_real() implementation, by moving
to code to crash_dump.c, where it actually belongs.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index 438fe696a4a3..dd74fe664ed1 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -115,7 +115,7 @@ void __init save_area_add_vxrs(struct save_area *sa, __vector128 *vxrs)
 	memcpy(sa->vxrs_high, vxrs + 16, 16 * sizeof(__vector128));
 }
 
-size_t copy_oldmem_iter(struct iov_iter *iter, unsigned long src, size_t count)
+static size_t copy_oldmem_iter(struct iov_iter *iter, unsigned long src, size_t count)
 {
 	size_t len, copied, res = 0;
 
@@ -146,6 +146,19 @@ size_t copy_oldmem_iter(struct iov_iter *iter, unsigned long src, size_t count)
 	return res;
 }
 
+int copy_oldmem_kernel(void *dst, unsigned long src, size_t count)
+{
+	struct iov_iter iter;
+	struct kvec kvec;
+
+	kvec.iov_base = dst;
+	kvec.iov_len = count;
+	iov_iter_kvec(&iter, WRITE, &kvec, 1, count);
+	if (copy_oldmem_iter(&iter, src, count) < count)
+		return -EFAULT;
+	return 0;
+}
+
 /*
  * Copy one page from "oldmem"
  */