On Sat, Dec 23, 2017 at 04:56:43PM -0800, Dan Williams wrote:
In support of testing truncate colliding with dma add a mechanism
delays the completion of block I/O requests by a programmable number of
seconds. This allows a truncate operation to be issued while page
references are held for direct-I/O.
Signed-off-by: Dan Williams <dan.j.williams(a)intel.com>
Why not put this in the generic bio layer code and then write a
generic fstest to exercise this truncate vs direct IO completion
race condition on all types of storage and filesystems?
i.e. if it sits in a nvdimm test suite, it's never going to be run
by filesystem developers....