linux-kernel - [patch 1/2] mm: make swap token dummies static inlines

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Date:	Tue, 16 Jun 2009 23:50:36 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Izik Eidus <ieidus@...hat.com>, Rik van Riel <riel@...hat.com>,
	Nick Piggin <nickpiggin@...oo.com.au>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [patch 1/2] mm: make swap token dummies static inlines

Make use of the compiler's typechecking on !CONFIG_SWAP as well.

Signed-off-by: Johannes Weiner <hannes@...xchg.org>
---
 include/linux/swap.h |   20 ++++++++++++++++----
 1 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index d476aad..3c6e856 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -426,10 +426,22 @@ static inline swp_entry_t get_swap_page(void)
 }
 
 /* linux/mm/thrash.c */
-#define put_swap_token(x) do { } while(0)
-#define grab_swap_token()  do { } while(0)
-#define has_swap_token(x) 0
-#define disable_swap_token() do { } while(0)
+static inline void put_swap_token(struct mm_struct *mm)
+{
+}
+
+static inline void grab_swap_token(void)
+{
+}
+
+static inline int has_swap_token(struct mm_struct *mm)
+{
+	return 0;
+}
+
+static inline void disable_swap_token(struct mm_struct *mm)
+{
+}
 
 static inline int mem_cgroup_cache_charge_swapin(struct page *page,
 			struct mm_struct *mm, gfp_t mask, bool locked)
-- 
1.6.3

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