4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Ross Lagerwall <[email protected]> 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 <[email protected]> Acked-by: Juergen Gross <[email protected]> Signed-off-by: David Vrabel <[email protected]> Cc: Arnd Bergmann <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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;
