On Thu, Mar 4, 2010 at 1:15 PM, Pavel Machek <pavel@xxxxxx> wrote: > Hi! > >> > My thought exactly. This is the only approach that also solves the >> > following race: >> > >> > A driver is unloaded at the same time as a suspend starts. >> > >> > The writeback thread gets frozen. >> > >> > Then before the rmmod thread is frozen, it calls del_gendisk. >> > >> > Delaying things by means of a workqueue (or the equivalent) might also >> > work, but it doesn't seem as safe. For example, some important >> > writebacks might end up getting delayed until too late. > > Delaying writebacks during sleep should be ok... That's why we do > sync() after userspace is frozen -- nothing really important should be > waiting for writeback after that point. Has this been fixed, or has a consensus about how to fix this been achieved? I'm hitting the same problem and have some time to work on a fix. Matt _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
