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Date:   Thu, 23 Nov 2017 08:43:43 +0200
From:   Amir Goldstein <>
To:     Theodore Ts'o <>
Cc:     Eryu Guan <>, Josef Bacik <>,
        "Darrick J . Wong" <>,,
Subject: [PATCH 2/2] generic/456: document the fix commit

Add a link to Ted's post with more details about the bug
and the fix.

Signed-off-by: Amir Goldstein <>


It may be better to include a digest of the refered post embedded
in the test. For now, I just added the link to mailing list archive.
Maybe Ted can add the digest later.


 tests/generic/456 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/generic/456 b/tests/generic/456
index 8debd3f..ed3cacc 100755
--- a/tests/generic/456
+++ b/tests/generic/456
@@ -4,6 +4,9 @@
 # This test is motivated by a bug found in ext4 during random crash
 # consistency tests.
+# Fixed by commit 51e3ae81ec58 ("ext4: fix interaction between i_size,
+# fallocate, and delalloc after a crash")
 # Copyright (C) 2017 CTERA Networks. All Rights Reserved.
 # Author: Amir Goldstein <>
@@ -58,6 +61,8 @@ _require_metadata_journaling $SCRATCH_DEV
+# See this post for reverse engineering of this auto generated test:
 cat <<EOF > $fsxops
 write 0x137dd 0xdc69 0x0

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