udf: Cleanup metadata flags handling

Use simple ->s_flags variable instead of u8 variable for each flag.
Signed-off-by: Jan Kara <jack@suse.cz>

fs/udf/partition.c

@@ -323,10 +323,10 @@ uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
 	retblk = udf_try_read_meta(inode, block, partition, offset);
 	if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
 		udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
-		if (!mdata->s_mirror_loaded_flag) {
+		if (!(mdata->s_flags & MF_MIRROR_FE_LOADED)) {
 			mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
 				mdata->s_mirror_file_loc, map->s_partition_num);
-			mdata->s_mirror_loaded_flag = 1;
+			mdata->s_flags |= MF_MIRROR_FE_LOADED;
 		}
 
 		inode = mdata->s_mirror_fe;

fs/udf/super.c

@@ -1333,8 +1333,8 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 					le32_to_cpu(mdm->allocUnitSize);
 				mdata->s_align_unit_size =
 					le16_to_cpu(mdm->alignUnitSize);
-				mdata->s_dup_md_flag 	 =
-					mdm->flags & 0x01;
+				if (mdm->flags & 0x01)
+					mdata->s_flags |= MF_DUPLICATE_MD;
 
 				udf_debug("Metadata Ident suffix=0x%x\n",
 					  le16_to_cpu(*(__le16 *)
@@ -1349,8 +1349,8 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 					  le32_to_cpu(mdm->metadataMirrorFileLoc));
 				udf_debug("Bitmap file loc=%d\n",
 					  le32_to_cpu(mdm->metadataBitmapFileLoc));
-				udf_debug("Duplicate Flag: %d %d\n",
-					  mdata->s_dup_md_flag, mdm->flags);
+				udf_debug("Flags: %d %d\n",
+					  mdata->s_flags, mdm->flags);
 			} else {
 				udf_debug("Unknown ident: %s\n",
 					  upm2->partIdent.ident);

fs/udf/udf_sb.h

@@ -54,14 +54,16 @@
 
 #pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */
 
+#define MF_DUPLICATE_MD		0x01
+#define MF_MIRROR_FE_LOADED	0x02
+
 struct udf_meta_data {
 	__u32	s_meta_file_loc;
 	__u32	s_mirror_file_loc;
 	__u32	s_bitmap_file_loc;
 	__u32	s_alloc_unit_size;
 	__u16	s_align_unit_size;
-	__u8 	s_dup_md_flag;
-	__u8	s_mirror_loaded_flag;
+	int	s_flags;
 	struct inode *s_metadata_fe;
 	struct inode *s_mirror_fe;
 	struct inode *s_bitmap_fe;