On Wed, Jun 17, 2026 at 11:44:47AM +0200, Pankaj Raghav (Samsung) wrote:

quoted

Maybe we also want xfstests that try unaligned FALLOC_FL_WRITE_ZEROES
and make sure no existing data before the range is lost and the
entire range is zeroed?

I added FALLOC_FL_WRITE_ZEROES support to ltp (both fsx and fsstress).
For example, generic/363 tests for unaligned writes and checks for any
stale data. By default, I think we do unaligned reads, writes and
truncate in fsx.

But I guess not unaligned FALLOC_FL_WRITE_ZEROES?