> > That's weird, I never had a suspend problem due to a fuse mount, > > though I have them all the time. And I suspect, that even the sync() > > Well, I don't either, because we don't freeze processes on > powerbooks. But I have heard that other people have problems with > suspending with a fuse filesystem mounted. Maybe the difference is > whether or not the filesystem is writable? > > > thing that suspend does is not the real cause, because sync() actually > > does nothing in fuse filesystems. > > It's not the filesystem sync method, as I understand it, it's that if > there are dirty pages in the page cache for files on the fuse > filesystem, Currently fuse doesn't produce dirty pages. Normal writes are done synchronously, and writable mmap is not supported. So sync() should really be a no-op for fuse. > the system will initiate a write-out on them and wait for it to > finish. But if the fuse userspace is frozen, the write-out will > never complete. Maybe there is some other fs operation being done, possibly not directly, but by waiting for a kernel thread, that does that. It would be nice, if someone who can reproduce the deadlock could debug it. Does sysrq still work during suspend? Miklos _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
