Please add subsystem prefixes to your subject lines, e.g.

fs:

for all the generic fs ones,

xfs:

for XFS,

block:

for block layer changes, etc.

 
-	if (flags & ~(RWF_HIPRI | RWF_DSYNC | RWF_SYNC))
-		return -EOPNOTSUPP;
-
 	init_sync_kiocb(&kiocb, filp);
-	if (flags & RWF_HIPRI)
-		kiocb.ki_flags |= IOCB_HIPRI;
-	if (flags & RWF_DSYNC)
-		kiocb.ki_flags |= IOCB_DSYNC;
-	if (flags & RWF_SYNC)
-		kiocb.ki_flags |= (IOCB_DSYNC | IOCB_SYNC);
+	ret = kiocb_set_rw_flags(&kiocb, flags);
+	if (ret)
+		return ret;

And please split factoring out kiocb_set_rw_flags into a separate
prep patch.

Otherwise these changes look fine:

Reviewed-by: Christoph Hellwig <hch@lst.de>