compat-3.11.h: Mask sg_copy_buffer as it defined in RHEL7.4

Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.com>

diff --git a/compat/compat-3.11.c b/compat/compat-3.11.c
index f74a0f0173e13d2c463379f31bc00adaccaccc32..4cbfc897cdedfeef8676697cc95e4ada0a1cf193 100644 (file)
--- a/compat/compat-3.11.c
+++ b/compat/compat-3.11.c
@@ -313,6 +313,7 @@ void sg_miter_stop(struct sg_mapping_iter *miter)
  * Returns the number of copied bytes.
  *
  **/
+#define sg_copy_buffer LINUX_BACKPORT(sg_copy_buffer)
 static size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents,
                             void *buf, size_t buflen, off_t skip,
                             bool to_buffer)