[PATCH] net: use non-compound pages in frag allocator
From: Ilya Lesokhin <hidden>
Date: 2016-08-04 12:47:47
Subsystem:
networking [general], networking [sockets], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Kuniyuki Iwashima, Willem de Bruijn, Linus Torvalds
The code currently always references the first page in the frag therefore there is no need to pay the extra overhead of making the frag page compound Signed-off-by: Ilya Lesokhin <redacted> --- net/core/sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/sock.c b/net/core/sock.c
index 08bf97e..77432ba 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c@@ -1993,7 +1993,7 @@ bool skb_page_frag_refill(unsigned int sz, struct page_frag *pfrag, gfp_t gfp) if (SKB_FRAG_PAGE_ORDER) { /* Avoid direct reclaim but allow kswapd to wake */ pfrag->page = alloc_pages((gfp & ~__GFP_DIRECT_RECLAIM) | - __GFP_COMP | __GFP_NOWARN | + __GFP_NOWARN | __GFP_NORETRY, SKB_FRAG_PAGE_ORDER); if (likely(pfrag->page)) {
--
1.8.3.1