Hi, On Thursday, 9 November 2006 22:17, Pavel Machek wrote: > Hi! > > > > > OTOH I have no idea _how_ we can tell xfs that the processes have been > > > > frozen. Should we introduce a global flag for that or something? > > > > > > I guess XFS should just do all the writes from process context, and > > > refuse any writing when its threads are frozen... I actually still > > > believe it is doing the right thing, because you can't really write to > > > disk from timer. > > > > This is from a work queue, so in fact from a process context, but from > > a process that is running with PF_NOFREEZE. > > Why not simply &~ PF_NOFREEZE on that particular process? Filesystems > are free to use threads/work queues/whatever, but refrigerator should > mean "no writes to filesystem" for them... But how we differentiate worker_threads used by filesystems from the other ones? BTW, I think that worker_threads run with PF_NOFREEZE for a reason, but what exactly is it? Rafael -- You never change things by fighting the existing reality. R. Buckminster Fuller -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
