[XFS] fix non-smp xfs build

xfs_reserve_blocks() calls xfs_icsb_sync_counters_locked(), which is not
defined if !CONFIG_SMP/!HAVE_PERCPU_SB

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30991a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
1 file changed