From: Allison Karlitskaya <allison.karlitskaya@redhat.com>
Subject: mke2fs: disallow -O verity without extents

Similar to 64-bit support, fs-verity support requires extents, so don't
allow to create a filesystem that has -O verity unless it also supports
extents.

Origin: upstream, https://github.com/tytso/e2fsprogs/commit/03fa1a5ee55d0653f5931cea3cab760599bab216
---
 misc/mke2fs.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index f24076bc1..017838d43 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -2385,6 +2385,14 @@ profile_error:
 		exit(1);
 	}
 
+	/* fs-verity support requires extents */
+	if (ext2fs_has_feature_verity(&fs_param) &&
+	    !ext2fs_has_feature_extents(&fs_param)) {
+		printf("%s", _("Extents MUST be enabled for fs-verity "
+			       "support.  Pass -O extents to rectify.\n"));
+		exit(1);
+	}
+
 	/* Set first meta blockgroup via an environment variable */
 	/* (this is mostly for debugging purposes) */
 	if (ext2fs_has_feature_meta_bg(&fs_param) &&
-- 
2.47.2