1 files changed, 6 insertions, 3 deletions

diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 995c3fdc16c2..79a55d56cc98 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -244,7 +244,7 @@ _copy_to_pages(struct page **pages, size_t pgbase, const char *p, size_t len)
         pgto = pages + (pgbase >> PAGE_CACHE_SHIFT);
         pgbase &= ~PAGE_CACHE_MASK;
 
-        do {
+        for (;;) {
                 copy = PAGE_CACHE_SIZE - pgbase;
                 if (copy > len)
                         copy = len;
@@ -253,6 +253,10 @@ _copy_to_pages(struct page **pages, size_t pgbase, const char *p, size_t len)
                 memcpy(vto + pgbase, p, copy);
                 kunmap_atomic(vto, KM_USER0);
 
+                len -= copy;
+                if (len == 0)
+                        break;
+
                 pgbase += copy;
                 if (pgbase == PAGE_CACHE_SIZE) {
                         flush_dcache_page(*pgto);
@@ -260,8 +264,7 @@ _copy_to_pages(struct page **pages, size_t pgbase, const char *p, size_t len)
                         pgto++;
                 }
                 p += copy;
-
-        } while ((len -= copy) != 0);
+        }
         flush_dcache_page(*pgto);
 }