| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2019 Red Hat, Inc. All Rights Reserved. |
| # |
| # FS QA Test No. generic/567 |
| # |
| # Test mapped writes against punch-hole to ensure we get the data |
| # correctly written. This can expose data corruption bugs on filesystems |
| # where the block size is smaller than the page size. |
| # |
| # (generic/029 is a similar test but for truncate.) |
| # |
| . ./common/preamble |
| _begin_fstest auto quick rw punch |
| |
| # Import common functions. |
| . ./common/filter |
| |
| _require_scratch |
| _require_xfs_io_command "fpunch" |
| |
| testfile=$SCRATCH_MNT/testfile |
| |
| _scratch_mkfs > /dev/null 2>&1 |
| _scratch_mount |
| |
| # Punch a hole straddling two pages to check that the mapped write after the |
| # hole-punching is correctly handled. |
| |
| $XFS_IO_PROG -t -f \ |
| -c "pwrite -S 0x58 0 12288" \ |
| -c "mmap -rw 0 12288" \ |
| -c "mwrite -S 0x5a 2048 8192" \ |
| -c "fpunch 2048 8192" \ |
| -c "mwrite -S 0x59 2048 8192" \ |
| -c "close" \ |
| $testfile | _filter_xfs_io |
| |
| echo "==== Pre-Remount ===" |
| _hexdump $testfile |
| _scratch_cycle_mount |
| echo "==== Post-Remount ==" |
| _hexdump $testfile |
| |
| status=0 |
| exit |
