On Tue, 3 Oct 2017, Bart Van Assche wrote: > If just a single driver would use that API to prevent that I/O occurs while > processes are frozen then this patch will break that driver. I would like to > know your opinion about the following patch in particular: "[PATCH v4 1/7] md: > Make md resync and reshape threads freezable" > (https://www.spinics.net/lists/linux-block/msg17854.html). Alright, if there are kthreads which are actually *creating* new I/O (contrary to kthreads being I/O completion helpers) -- which apparently is the md case here, then those definitely have to be frozen in some form. -- Jiri Kosina SUSE Labs
