ocfs2: Simplify ocfs2_read_block()

More than 30 callers of ocfs2_read_block() pass exactly OCFS2_BH_CACHED.
Only six pass a different flag set.  Rather than have every caller care,
let's make ocfs2_read_block() take no flags and always do a cached read.
The remaining six places can call ocfs2_read_blocks() directly.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 8788dc2..cbd03df 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -84,10 +84,7 @@
 
 	mlog_entry_void();
 
-	status = ocfs2_read_block(inode,
-				  OCFS2_I(inode)->ip_blkno,
-				  bh,
-				  OCFS2_BH_CACHED);
+	status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, bh);
 	if (status < 0) {
 		mlog_errno(status);
 		link = ERR_PTR(status);