1 files changed, 5 insertions, 8 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index abca870d8ff6..198f75b7bdd3 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1249,6 +1249,9 @@ csum_copy_err:
 
         if (noblock)
                 return -EAGAIN;
+
+        /* starting over for a new packet */
+        msg->msg_flags &= ~MSG_TRUNC;
         goto try_again;
 }
 
@@ -2206,16 +2209,10 @@ void __init udp_table_init(struct udp_table *table, const char *name)
 
 void __init udp_init(void)
 {
-        unsigned long nr_pages, limit;
+        unsigned long limit;
 
         udp_table_init(&udp_table, "UDP");
-        /* Set the pressure threshold up by the same strategy of TCP. It is a
-         * fraction of global memory that is up to 1/2 at 256 MB, decreasing
-         * toward zero with the amount of memory, with a floor of 128 pages.
-         */
-        nr_pages = totalram_pages - totalhigh_pages;
-        limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
-        limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+        limit = nr_free_buffer_pages() / 8;
         limit = max(limit, 128UL);
         sysctl_udp_mem[0] = limit / 4 * 3;
         sysctl_udp_mem[1] = limit;