tests/f2fs/011

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2025 Chao Yu.  All Rights Reserved.
#
# FS QA Test No. f2fs/011
#
# This is a regression testcase to check whether we will handle
# out-of-space case correctly during fallocate() on pinned file
# once we disable checkpoint.
# 1. mount f2fs w/ checkpoint=disable option
# 2. create fragmented file data
# 3. set flag w/ pinned flag
# 4. fallocate space for pinned file, expects panic due to running
# out of space
# We should apply both commit ("f2fs: fix to avoid panic once
# fallocation fails for pinfile") and commit ("f2fs: fix to avoid
# running out of free segments") to avoid system panic.
# Note that w/ these two commit, we fixed such issue in both
# convential and zoned block device.
#
. ./common/preamble
_begin_fstest auto quick

_fixed_by_kernel_commit 48ea8b200414 \
	"f2fs: fix to avoid panic once fallocation fails for pinfile"
_fixed_by_kernel_commit f7f8932ca6bb \
	"f2fs: fix to avoid running out of free segments"

_require_scratch
_require_command "$F2FS_IO_PROG" f2fs_io

_scratch_mkfs_sized $((1*1024*1024*1024)) >> $seqres.full
_scratch_mount -o checkpoint=disable:10%

pinfile=$SCRATCH_MNT/file

# simulate fragment status in f2fs
for ((i=0;i<256;i++)) do
	$XFS_IO_PROG -f -c "pwrite -i /dev/urandom 0 1m" $SCRATCH_MNT/$i >>$seqres.full
done
sync

for ((i=0;i<256;i+=2)) do
	rm -f $SCRATCH_MNT/$i
done
sync

touch $pinfile
$F2FS_IO_PROG pinfile set $pinfile >> $seqres.full
$XFS_IO_PROG -c "falloc 0 $((3*256*1024*1024))" $pinfile

status=0
exit