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[Xen-devel] [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@xxxxxxxxxx>
 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)
+static void release_memory_resource(struct resource *resource);
 static struct resource *additional_memory_resource(phys_addr_t size)
        struct resource *res;

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