dm error: mark as DM_TARGET_PASSES_INTEGRITY

Mark dm error as DM_TARGET_PASSES_INTEGRITY so that it can be stacked on
top of PI capable devices. The claim is strictly speaking as lie as dm
error fails all I/O and doesn't pass anything on, but doing the same for
integrity I/O work just fine :)

This helps to make about two dozen xfstests test cases pass on PI capable
devices.

Signed-off-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Mikulas Patocka <[e-mail]>

drivers/md/dm-target.c

···
 static struct target_type error_target = {
 	.name = "error",
 	.version = {1, 7, 0},
-	.features = DM_TARGET_WILDCARD | DM_TARGET_ZONED_HM,
+	.features = DM_TARGET_WILDCARD | DM_TARGET_ZONED_HM |
+		DM_TARGET_PASSES_INTEGRITY,
 	.ctr  = io_err_ctr,
 	.dtr  = io_err_dtr,
 	.map  = io_err_map,