hi, > YAMAMOTO Takashi <y...@mwd.biglobe.ne.jp> wrote: > >> if it trapped forever, it's a bug and should be fixed. my point was >> that your change didn't fix the bug. blocking ioflush is merely a symptom. > > The problem with userland filesystems is that we may have little control > as theses may be third pary programs. Should kernel threads trust theses > processes in order to run as intended?
i guess it depends. is ioflush blocking forever worse than a userland application blocking forever? it depends. even if it's a problem, it isn't a problem specific to userland filesystems. filesystems have varying performance and reliability. > > One way to fix that may be to have one ioflush thread for each userland > filesystem. That way a broken filesystem will not prevent ioflush from > working for others. But we have hit similar problems with others kernel > threads. sure, it can be a good idea. YAMAMOTO Takashi > > -- > Emmanuel Dreyfus > http://hcpnet.free.fr/pubz > m...@netbsd.org
