From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id AF0D06B00EB for ; Thu, 9 Jun 2011 04:03:11 -0400 (EDT) From: Mel Gorman Subject: [PATCH 09/14] netvm: Propagate page->pfmemalloc to skb Date: Thu, 9 Jun 2011 09:02:48 +0100 Message-Id: <1307606573-24704-10-git-send-email-mgorman@suse.de> In-Reply-To: <1307606573-24704-1-git-send-email-mgorman@suse.de> References: <1307606573-24704-1-git-send-email-mgorman@suse.de> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Linux-MM , Linux-Netdev , LKML , David Miller , Neil Brown , Peter Zijlstra , Mel Gorman The skb->pfmemalloc flag gets set to true iff during the slab allocation of data in __alloc_skb that the the PFMEMALLOC reserves were used. If the packet is fragmented, it is possible that pages will be allocated from the PFMEMALLOC reserve without propagating this information to the skb. This patch propagates page->pfmemalloc from pages allocated for fragments to the skb. Signed-off-by: Mel Gorman --- include/linux/skbuff.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ff8918f..f924ca8 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1124,6 +1124,8 @@ static inline void skb_fill_page_desc(struct sk_buff *skb, int i, { skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + if (page->pfmemalloc) + skb->pfmemalloc = true; frag->page = page; frag->page_offset = off; frag->size = size; -- 1.7.3.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org