The new behavior of DAX on xfs/ext4 has been merged into main kernel so it is time for fstests to support new behavior of DAX. 1) Refactor common functions and take use of them. 2) Move and update xfs/260. 3) Add three new tests to verify some features. References: https://lkml.org/lkml/2019/10/20/96 https://lkml.org/lkml/2020/5/28/949 V7->V8: 1) Rebase against the latest xfstests. 2) Factor out _check_s_dax() and _check_xflag(). V8->V9: 1) Squash a new test(generic/608) into the patch set. 2) Add a new combination(without dax option) for all related tests(generic/605, generic/606, generic/608). 3) In generic/607, factor out _scratch_mkfs() and export MOUNT_OPTIONS="" for a combination(without dax option). Xiao Yang (8): common/rc: Introduce helpers for new dax mount options and FS_XFLAG_DAX fstests: Use _require_scratch_dax_mountopt() and _require_dax_iflag() generic/223: Don't clear MKFS_OPTION before calling _scratch_mkfs_geom() generic/413, xfs/260: Improve format operation for PMD fault testing xfs/260: Move and update xfs/260 generic: Verify if statx() can qurey S_DAX flag on regular file correctly generic: Verify the inheritance behavior of FS_XFLAG_DAX flag in various combinations generic: Verify how to change the S_DAX flag on an existing file common/rc | 105 ++++++++++++++++-- tests/ext4/030 | 2 +- tests/ext4/031 | 4 +- tests/generic/223 | 1 - tests/generic/413 | 12 +-- tests/generic/462 | 2 +- tests/{xfs/260 => generic/605} | 79 +++++++------- tests/generic/605.out | 2 + tests/generic/606 | 92 ++++++++++++++++ tests/generic/606.out | 2 + tests/generic/607 | 189 +++++++++++++++++++++++++++++++++ tests/generic/607.out | 2 + tests/generic/608 | 121 +++++++++++++++++++++ tests/generic/608.out | 2 + tests/generic/group | 4 + tests/xfs/260.out | 2 - tests/xfs/group | 1 - 17 files changed, 559 insertions(+), 63 deletions(-) rename tests/{xfs/260 => generic/605} (54%) create mode 100644 tests/generic/605.out create mode 100644 tests/generic/606 create mode 100644 tests/generic/606.out create mode 100644 tests/generic/607 create mode 100644 tests/generic/607.out create mode 100644 tests/generic/608 create mode 100644 tests/generic/608.out delete mode 100644 tests/xfs/260.out -- 2.21.0