linux-kernel - [PATCH] xen/balloon: Fix declared-but-not-defined warning

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Date:	Mon, 9 May 2016 14:29:49 +0100
From:	Ross Lagerwall <ross.lagerwall@...rix.com>
To:	<xen-devel@...ts.xenproject.org>
CC:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Juergen Gross <jgross@...e.com>,
	<linux-kernel@...r.kernel.org>, <pebolle@...cali.nl>,
	<geert@...ux-m68k.org>, Ross Lagerwall <ross.lagerwall@...rix.com>
Subject: [PATCH] xen/balloon: Fix declared-but-not-defined warning

Fix a declared-but-not-defined warning when building with
XEN_BALLOON_MEMORY_HOTPLUG=n. This fixes a regression introduced by
commit dfd74a1edfab
("xen/balloon: Fix crash when ballooning on x86 32 bit PAE").

Signed-off-by: Ross Lagerwall <ross.lagerwall@...rix.com>
---
 drivers/xen/balloon.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index d46839f..0e57906 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -151,8 +151,6 @@ static DECLARE_WAIT_QUEUE_HEAD(balloon_wq);
 static void balloon_process(struct work_struct *work);
 static DECLARE_DELAYED_WORK(balloon_worker, balloon_process);
 
-static void release_memory_resource(struct resource *resource);
-
 /* When ballooning out (allocating memory to return to Xen) we don't really
    want the kernel to try too hard since that can trigger the oom killer. */
 #define GFP_BALLOON \
@@ -248,6 +246,8 @@ static enum bp_state update_schedule(enum bp_state state)
 }
 
 #ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
+static void release_memory_resource(struct resource *resource);
+
 static struct resource *additional_memory_resource(phys_addr_t size)
 {
 	struct resource *res;
-- 
2.4.3