linux-kernel - [PATCH] net, skbuff: Get rid of unused skb_propagate

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Date:	Thu, 27 Aug 2015 10:46:37 +0200
From:	mhocko@...nel.org
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Mel Gorman <mgorman@...e.de>, Eric Dumazet <edumazet@...gle.com>,
	linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...e.com>
Subject: [PATCH] net, skbuff: Get rid of unused skb_propagate_pfmemalloc

From: Michal Hocko <mhocko@...e.com>

It seems that skb_propagate_pfmemalloc has never had a user since it was
introduced by 0614002bb5f7 ("netvm: propagate page->pfmemalloc from
skb_alloc_page to skb"). Remove it.

Signed-off-by: Michal Hocko <mhocko@...e.com>
---
Hi,
this has been noticed while working on 2f064f3485cd ("mm: make page
pfmemalloc check more robust").

 include/linux/skbuff.h | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 9b88536487e6..9fcf69daa26c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2252,18 +2252,6 @@ static inline struct page *dev_alloc_page(void)
 }
 
 /**
- *	skb_propagate_pfmemalloc - Propagate pfmemalloc if skb is allocated after RX page
- *	@page: The page that was allocated from skb_alloc_page
- *	@skb: The skb that may need pfmemalloc set
- */
-static inline void skb_propagate_pfmemalloc(struct page *page,
-					     struct sk_buff *skb)
-{
-	if (page_is_pfmemalloc(page))
-		skb->pfmemalloc = true;
-}
-
-/**
  * skb_frag_page - retrieve the page referred to by a paged fragment
  * @frag: the paged fragment
  *
-- 
2.5.0

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