Lukàš ran over a nasty regression in our xfs_write_zeroes() function (sorry, my fault) made apparent by a recent patch from Anton that makes qcow2 images heavily exercise the offending code path.
This series fixes the bug and adds a test to prevent it from reoccurring. Max Reitz (2): block/file-posix: Fix xfs_write_zeroes() iotests: Test reverse sub-cluster qcow2 writes block/file-posix.c | 16 ++++++--- tests/qemu-iotests/265 | 67 ++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/265.out | 6 ++++ tests/qemu-iotests/group | 1 + 4 files changed, 85 insertions(+), 5 deletions(-) create mode 100755 tests/qemu-iotests/265 create mode 100644 tests/qemu-iotests/265.out -- 2.21.0
