[XFS] Either handle preemption with get/put or not, but don't

get without a put!  Fix code for preemptable kernels.

SGI Modid: 2.5.x-xfs:slinx:159379a

fs/xfs/linux/xfs_stats.h

@@ -130,9 +130,11 @@ struct xfsstats {
 
 DECLARE_PER_CPU(struct xfsstats, xfsstats);
 
-# define XFS_STATS_INC(count)		( get_cpu_var(xfsstats).count++ )
-# define XFS_STATS_DEC(count)		( get_cpu_var(xfsstats).count-- )
-# define XFS_STATS_ADD(count, inc)	( get_cpu_var(xfsstats).count += (inc) )
+/* We don't disable preempt, not too worried about poking the
+ * wrong cpu's stat for now */
+#define XFS_STATS_INC(count)		(__get_cpu_var(xfsstats).count++)
+#define XFS_STATS_DEC(count)		(__get_cpu_var(xfsstats).count--)
+#define XFS_STATS_ADD(count, inc)	(__get_cpu_var(xfsstats).count += (inc))
 
 extern void xfs_init_procfs(void);
 extern void xfs_cleanup_procfs(void);

fs/xfs/pagebuf/page_buf_internal.h

@@ -123,7 +123,9 @@ struct pbstats {
 
 DECLARE_PER_CPU(struct pbstats, pbstats);
 
-#define PB_STATS_INC(count)   ( get_cpu_var(pbstats).count++ )
+/* We don't disable preempt, not too worried about poking the
+ * wrong cpu's stat for now */
+#define PB_STATS_INC(count)	(__get_cpu_var(pbstats).count++)
 
 #ifndef STATIC
 # define STATIC	static