net: use release_pages() in zerocopy_sg_from_iovec()
To reduce the duplicated codes.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/datagram.c b/net/core/datagram.c
index a8a795c..badcd93 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -48,6 +48,7 @@
#include <linux/highmem.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
+#include <linux/pagemap.h>
#include <net/protocol.h>
#include <linux/skbuff.h>
@@ -638,10 +639,7 @@
return -EMSGSIZE;
num_pages = get_user_pages_fast(base, size, 0, &page[i]);
if (num_pages != size) {
- int j;
-
- for (j = 0; j < num_pages; j++)
- put_page(page[i + j]);
+ release_pages(&page[i], num_pages, 0);
return -EFAULT;
}
truesize = size * PAGE_SIZE;