On Mon Jun 9 23:55:00 EDT 2014, cinap_len...@felloff.net wrote: > while you'r at it. take a look at 9front imageattach() code. > it allows the chan attached to the image to be released when the > image is not in use. this avoids all these chans and mounts > being kept arround until the image is reclaimed. the problem > is worked arround in iostats by killing the filesystem process > once the command exits. you can reproduce by copying a binary > to a fresh ramfs, executing and then unmount. ramfs will stay > arround because the image cache still holds onto the binaries > channel.
i noticed that the private channel free queue was dropped in favor of ccloseq. good idea. if i understand correctly, there's an other hand to this solution. if a process exits and is then run again, it will always be re-read from storage. (since channel comparisons factor in to finding an image.) only if the lifetime overlaps will the cached image be used. i think it would make more sense to simply reclaim pages with p->image != nil quicker, if you don't like the current set up. - erik
