On Tue, Aug 25, 2020 at 02:05:54PM +0200, Jan Kara wrote: > Discarding blocks and buffers under a mounted filesystem is hardly > anything admin wants to do. Usually it will confuse the filesystem and > sometimes the loss of buffer_head state (including b_private field) can > even cause crashes like: Doesn't work if the file system uses multiple devices. I think we just really need to split the fs buffer_head address space from the block device one. Everything else is just going to cause a huge mess.
