On Wed, 29 Oct 2008, Nigel Cunningham wrote: > Hi. > > On Wed, 2008-10-29 at 00:24 +0100, Miklos Szeredi wrote: > > On Wed, 29 Oct 2008, Nigel Cunningham wrote: > > > Remember, though, that we're only freezing fuse at the moment, and > > > strictly one filesystem at a time. We can thus happily wait for the > > > i_mutex taken by some other process to be released. > > > > Not going to work: you need to wait for all requests to be finished, > > but those might depend on some other fuse filesystem which has already > > been frozen. > > Okay. In that case, am I right in thinking that the request waiting on > the frozen filesystem will be stuck in request_wait_answer, Yes. > and the > userspace process that was trying to satisfy the request will be stuck > in the FUSE_MIGHT_FREEZE call that was invoked for the frozen > filesystem? No, it already passed that, before the filesystem got frozen. But it doesn't matter, in either case i_mutex will already have been taken by the VFS and it won't be released until the request completely finishes. Miklos _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
