On Thu, Jul 16, 2020 at 6:09 AM nerdopolis <bluescreen_avenger@xxxxxxxxxxx> wrote: > > Hi > > A while back I opened up https://bugzilla.kernel.org/show_bug.cgi?id=195113 describing a documentation problem in > https://www.kernel.org/doc/Documentation/filesystems/overlayfs.txt but for whatever reason, it hasn't been seen. > > > The problem is that it says "The lower filesystem can be any filesystem supported by Linux" > however, this is not the case, as Linux supports vfat, and vfat doesn't work as a lower filesystem > > So there's no way to tell what filesystems are applicable for an overlay lowerfs, > and I don't think any existing userspace utilities can detect it. > > Could it be possible for the .txt file to be updated? > The way it works usually in this project is you can submit a patch to fix the problem: https://www.kernel.org/doc/html/v4.17/process/submitting-patches.html But if you don't want to go through that process, you can offer a text to fix documentation. But I myself cannot offer anything better than: "The lower filesystem can be one of many filesystem supported by Linux". I don't think that we want to start listing the supported filesystems in documentation. FWIW the description of upper fs isn't uptodate either. Thanks, Amir.
