On Thu, Mar 17, 2022 at 04:48:19PM -0700, Yang Shi wrote: > > The patch 1 ~ 7 are minor bug fixes, clean up and preparation patches. > The patch 8 converts ext4 and xfs. We may need convert more filesystems, > but I'd like to hear some comments before doing that. Adding a hard-coded call to khugepage_enter_file() in ext4 and xfs, and potentially, each file system, seems kludgy as all heck. Is there any reason not to simply call it in the mm code which calls f_op->mmap()? - Ted