Ext2: remove the static function release_blocks to optimize the kernel

Because the static function 'release_blocks' is only called
when releasing blocks,it will be more simple and efficient to
call the function 'percpu_counter_add' directly.
Signed-off-by: NWang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: NJan Kara <jack@suse.cz>

fs/ext2/balloc.c

@@ -159,15 +159,6 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group)
 	return bh;
 }
 
-static void release_blocks(struct super_block *sb, int count)
-{
-	if (count) {
-		struct ext2_sb_info *sbi = EXT2_SB(sb);
-
-		percpu_counter_add(&sbi->s_freeblocks_counter, count);
-	}
-}
-
 static void group_adjust_blocks(struct super_block *sb, int group_no,
 	struct ext2_group_desc *desc, struct buffer_head *bh, int count)
 {
@@ -569,7 +560,7 @@ void ext2_free_blocks (struct inode * inode, unsigned long block,
 error_return:
 	brelse(bitmap_bh);
 	if (freed) {
-		release_blocks(sb, freed);
+		percpu_counter_add(&sbi->s_freeblocks_counter, freed);
 		dquot_free_block_nodirty(inode, freed);
 		mark_inode_dirty(inode);
 	}