ocfs2: Fix up i_blocks calculation to know about holes

Older file systems which didn't support holes did a dumb calculation of
i_blocks based on i_size. This is no longer accurate, so fix things up to
take actual allocation into account.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 8de6678..43267ee 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -1495,8 +1495,7 @@
 	if (S_ISLNK(inode->i_mode) && !oi->ip_clusters)
 		inode->i_blocks = 0;
 	else
-		inode->i_blocks =
-			ocfs2_align_bytes_to_sectors(i_size_read(inode));
+		inode->i_blocks = ocfs2_inode_sector_count(inode);
 
 	inode->i_uid     = be32_to_cpu(lvb->lvb_iuid);
 	inode->i_gid     = be32_to_cpu(lvb->lvb_igid);