block,fs: use REQ_* flags directly

Remove the WRITE_* and READ_SYNC wrappers, and just use the flags
directly.  Where applicable this also drops usage of the
bio_set_op_attrs wrapper.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

fs/hfsplus/super.c

@@ -221,7 +221,7 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
 	error2 = hfsplus_submit_bio(sb,
 				   sbi->part_start + HFSPLUS_VOLHEAD_SECTOR,
 				   sbi->s_vhdr_buf, NULL, REQ_OP_WRITE,
-				   WRITE_SYNC);
+				   REQ_SYNC);
 	if (!error)
 		error = error2;
 	if (!write_backup)
@@ -230,7 +230,7 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
 	error2 = hfsplus_submit_bio(sb,
 				  sbi->part_start + sbi->sect_count - 2,
 				  sbi->s_backup_vhdr_buf, NULL, REQ_OP_WRITE,
-				  WRITE_SYNC);
+				  REQ_SYNC);
 	if (!error)
 		error2 = error;
 out: