linux-kernel - [PATCH] mm: Fix section mismatch in memcontrol.c

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Message-ID: <b9df5fa10901122139t5176104ep640342718d2f1666@mail.gmail.com>
Date:	Tue, 13 Jan 2009 11:39:11 +0600
From:	"Rakib Mullick" <rakib.mullick@...il.com>
To:	"Linux-kernel Mailing List" <linux-kernel@...r.kernel.org>
Cc:	mingo@...e.hu, "Andrew Morton" <akpm@...ux-foundation.org>
Subject: [PATCH] mm: Fix section mismatch in memcontrol.c

Impact: Fix section mismatch warning.

The annotation for __init in enable_swap_cgroup() and __initdata for
really_do_swap_account produces the following warning. Which is not
right, since this function is called from non-init section. This patch
fixes it.

  LD      mm/built-in.o
WARNING: mm/built-in.o(.text+0x277d9): Section mismatch in reference
from the function mem_cgroup_create() to the function
.init.text:enable_swap_cgroup()
The function mem_cgroup_create() references
the function __init enable_swap_cgroup().
This is often because mem_cgroup_create lacks a __init
annotation or the annotation of enable_swap_cgroup is wrong.

Signed-off-by: Rakib Mullick <rakib.mullick@...il.com>

--- linux-2.6-orig/mm/memcontrol.c	2009-01-12 09:53:10.000000000 +0600
+++ linux-2.6/mm/memcontrol.c	2009-01-12 19:40:06.134648480 +0600
@@ -46,7 +46,7 @@ struct cgroup_subsys mem_cgroup_subsys _
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
 /* Turned on only when memory cgroup is enabled &&
really_do_swap_account = 0 */
 int do_swap_account __read_mostly;
-static int really_do_swap_account __initdata = 1; /* for remember boot option*/
+static int really_do_swap_account = 1; /* for remember boot option*/
 #else
 #define do_swap_account		(0)
 #endif
@@ -2170,13 +2170,13 @@ static void mem_cgroup_put(struct mem_cg


 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
-static void __init enable_swap_cgroup(void)
+static void enable_swap_cgroup(void)
 {
 	if (!mem_cgroup_disabled() && really_do_swap_account)
 		do_swap_account = 1;
 }
 #else
-static void __init enable_swap_cgroup(void)
+static void enable_swap_cgroup(void)
 {
 }
 #endif
--
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