On Fri, Sep 17, 2021 at 05:07:03PM -0700, Yang Shi wrote: > > The debugging showed the page passed to invalidatepage is a huge page > > and the length is the size of huge page instead of single page due to > > read only FS THP support. But block_invalidatepage() would throw BUG if > > the size is greater than single page. Things have already gone wrong before we get to this point. See do_dentry_open(). You aren't supposed to be able to get a writable file descriptor on a file which has had huge pages added to the page cache without the filesystem's knowledge. That's the problem that needs to be fixed.
