On Mon, Aug 3, 2020 at 5:50 PM David Howells <dhowells@xxxxxxxxxx> wrote: > > > Hi Linus, > > Here's a set of patches that adds a system call, fsinfo(), that allows > information about the VFS, mount topology, superblock and files to be > retrieved. > > The patchset is based on top of the mount notifications patchset so that > the mount notification mechanism can be hooked to provide event counters > that can be retrieved with fsinfo(), thereby making it a lot faster to work > out which mounts have changed. > > Note that there was a last minute change requested by Miklós: the event > counter bits got moved from the mount notification patchset to this one. > The counters got made atomic_long_t inside the kernel and __u64 in the > UAPI. The aggregate changes can be assessed by comparing pre-change tag, > fsinfo-core-20200724 to the requested pull tag. > > Karel Zak has created preliminary patches that add support to libmount[*] > and Ian Kent has started working on making systemd use these and mount > notifications[**]. So why are you asking to pull at this stage? Has anyone done a review of the patchset? I think it's obvious that this API needs more work. The integration work done by Ian is a good direction, but it's not quite the full validation and review that a complex new API needs. At least that's my opinion. Thanks, Miklos
