On Mon, Sep 25, 2017 at 01:29:18PM -0700, Bart Van Assche wrote:
> Some people use the md driver on laptops and use the suspend and
> resume functionality. Since it is essential that submitting of
> new I/O requests stops before device quiescing starts, make the
> md resync and reshape threads freezable.
As I explained, if SCSI quiesce is safe, this patch shouldn't
be needed.
The issue isn't MD specific, and in theory can be triggered
on all devices. And you can see the I/O hang report on BTRFS(RAID)
without MD involved:
https://marc.info/?l=linux-block&m=150634883816965&w=2
So please remove this patch from the patchset.
--
Ming
