On Mon, May 27, 2024 at 03:38:40PM +0000, Trond Myklebust wrote: > > It > > does not matter what mount you use to access it. > > Sure. However if you are providing a path argument, then presumably you > need to know which file system (aka super_block) it eventually resolves > to. Except that you can't, at least not without running into potential races. The only way to fix a race vs unmount/remount is to include the fsid part in the kernel generated file handle. > > If your use case isn't NFS servers, then what use case are you > targeting, and how do you expect those applications to use this API? The main user of the open by handle syscalls seems to be fanotify magic.
