Re: [PATCH 20/51] e2fsck: Verify extent tree blocks and clear the bad ones

When we encounter an extent tree block that passes the header check but fails
the checksum, offer to clear just that extent block instead of failing the
whole tree, which results in the entire inode being wiped out.

diff --git a/e2fsck/problem.c b/e2fsck/problem.c
index e74ad79..96b0de5 100644
--- a/e2fsck/problem.c
+++ b/e2fsck/problem.c

@@ -946,6 +946,12 @@ static struct e2fsck_problem problem_table[] = {
     N_("The bad @b @i looks @n.  "),
     PROMPT_CLEAR, 0 },

+    /* Extent block does not match extent */
+    { PR_1_EXTENT_CSUM_INVALID,
+      N_("@i %i extent block checksum does not match extent\n\t(logical @b "
+         "%c, @n physical @b %b, len %N)\n"),
+      PROMPT_CLEAR, 0 },