linux-ext4 - [PATCH 17/33] ext4/045: don't run the long dirent test on fuse2fs

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Message-ID: <176169820296.1433624.772708549799292809.stgit@frogsfrogsfrogs>
Date: Tue, 28 Oct 2025 18:24:51 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: djwong@...nel.org, zlang@...hat.com
Cc: neal@...pa.dev, fstests@...r.kernel.org, linux-ext4@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, joannelkoong@...il.com, bernd@...ernd.com
Subject: [PATCH 17/33] ext4/045: don't run the long dirent test on fuse2fs

From: Darrick J. Wong <djwong@...nel.org>

fuse2fs doesn't create htree indices for directories because libext2fs
doesn't support creating them.  When testing the kernel driver this test
runs in a few seconds, but on fuse2fs it takes ten minutes to create the
small directory with minimally sized names, and three hours more to
create a very large directory with long names.

This is silly for a test that really just wants to make sure that we can
create a directory with a lot of child subdirectories.  Skip the long
test on fuse2fs.  We probably don't even need the long test.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 tests/ext4/045 |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tests/ext4/045 b/tests/ext4/045
index 15b2541ee342fa..1ccb33dc361682 100755
--- a/tests/ext4/045
+++ b/tests/ext4/045
@@ -84,10 +84,18 @@ workout()

 # main
 DIR_NUM=65537
-DIR_LEN=( $SHORT_DIR $LONG_DIR )
+DIR_LEN=( $SHORT_DIR )
+# fuse2fs doesn't actually write htree indices to large directories, which
+# means this test becomes excruciatingly slow when the dirent names are long.
+# Skip the test to reduce the runtime from ~3.5h to about 15 minutes.
+if [[ ! "$FSTYP" =~ fuse* ]]; then
+	DIR_LEN+=( $LONG_DIR )
+fi
 PARENT_DIR="$SCRATCH_MNT/subdir"

-for ((i = 0; i < 2; i++)); do
+echo "${DIR_LEN[*]}" >> $seqres.full
+
+for ((i = 0; i < ${#DIR_LEN[@]}; i++)); do
        workout $DIR_NUM ${DIR_LEN[$i]} $PARENT_DIR
 done