lib: percpu_counter_add

 s/percpu_counter_mod/percpu_counter_add/

Because its a better name, _mod implies modulo.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index baf71dd..53be251 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -124,7 +124,7 @@
 			return 0;
 	}
 
-	percpu_counter_mod(&sbi->s_freeblocks_counter, -count);
+	percpu_counter_add(&sbi->s_freeblocks_counter, -count);
 	sb->s_dirt = 1;
 	return count;
 }
@@ -134,7 +134,7 @@
 	if (count) {
 		struct ext2_sb_info *sbi = EXT2_SB(sb);
 
-		percpu_counter_mod(&sbi->s_freeblocks_counter, count);
+		percpu_counter_add(&sbi->s_freeblocks_counter, count);
 		sb->s_dirt = 1;
 	}
 }