[PATCH 4.4 096/146] xen/balloon: Fix declared-but-not-defined warning

Greg Kroah-Hartman
2016-07-25T21:17:29Z

From: Ross Lagerwall <ross.lagerwall@citrix.com>

commit 842775f1509054ea969f1787f38d6a0ec2ccfaba upstream.

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@citrix.com>
Acked-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/xen/balloon.c | 28 +++++++++++++---------------
1 file changed, 13 insertions(+), 15 deletions(-)

--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -152,8 +152,6 @@ static DECLARE_WAIT_QUEUE_HEAD(balloon_w
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 \
@@ -249,6 +247,19 @@ static enum bp_state update_schedule(enu
}

#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
+static void release_memory_resource(struct resource *resource)
+{
+ if (!resource)
+ return;
+
+ /*
+ * No need to reset region to identity mapped since we now
+ * know that no I/O can be in this region
+ */
+ release_resource(resource);
+ kfree(resource);
+}
+
static struct resource *additional_memory_resource(phys_addr_t size)
{
struct resource *res;
@@ -287,19 +298,6 @@ static struct resource *additional_memor
return res;
}

-static void release_memory_resource(struct resource *resource)
-{
- if (!resource)
- return;
-
- /*
- * No need to reset region to identity mapped since we now
- * know that no I/O can be in this region
- */
- release_resource(resource);
- kfree(resource);
-}
-
static enum bp_state reserve_additional_memory(void)
{
long credit;