generic/767: require fallocate support

This test fails on filesystems that don't support fallocate, so screen
them out.

Cc: fstests@vger.kernel.org # v2025.07.13
Fixes: fa8694c823d853 ("generic: various atomic write tests with hardware and scsi_debug")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>
1 file changed