On 2016/11/30 8:01, Marc MERLIN wrote:
> And, after 5H of copying, not a single hang, or USB disconnect, or anything.
> Obviously this seems to point to other problems in the code, and I have no
> idea which layer is a culprit here, but reducing the buffers absolutely
> helped a lot.

Maybe you can try commit 63f53dea0c9866e9 ("mm: warn about allocations which 
stall for too long")
or 
http://lkml.kernel.org/r/1478416501-10104-1-git-send-email-penguin-ker...@i-love.sakura.ne.jp
for finding the culprit.

Reply via email to