hi, > On Sat, Feb 05, 2011 at 10:07:13PM -0500, der Mouse wrote: > > Of course, still better would be to fix vnd, though I'm not sure what > > the right fix would be. > > What's the problem? My vague understanding was that you could get into > deadlocks allocating blocks, but maybe I'm confusing it with something > else.
i vaguely remember: - vnd doesn't have code to allocate blocks. even the current use of VOP_BMAP is racy. we don't have good VOPs for vnd's purpose. - block allocation always involve page cache population at least for ffs. doing it in a pageout path is deadlock-prune. YAMAMOTO Takashi > > -- > David A. Holland > dholl...@netbsd.org
