Hello Mike, On 04/25/2017 06:29 PM, Mike Rapoport wrote: > Hello Michael, > > These patches are some kind of brief highlights of the changes to the > userfaultfd pages.
Thanks for the patches. All merged. A few tweaks made, and pushed to Git. > The changes to userfaultfd functionality are also described at update to > Documentation/vm/userfaultfd.txt [1]. > > In general, there were three major additions: > * hugetlbfs support > * shmem support > * non-page fault events > > I think we should add some details about using userfaultfd with different > memory types, describe meaning of each feature bits and add some text about > the new events. Agreed. > I haven't updated 'struct uffd_msg' yet, and I hesitate whether it's > description belongs to userfaultfd.2 or ioctl_userfaultfd.2 My guess is userfaultfd.2. But, maybe I missed something. What suggests to you that it could be ioctl_userfaultfd.2 instead? > As for the userfaultfd.7 we've discussed earlier, I believe it would > repeat Documentation/vm/userfaultfd.txt in way, so I'm not really sure it > is required. The thing about kernel Doc files is they are a lot less visible. It would be best I think to have the user-space visible API fully described in man pages... Cheers, Michael > [1] > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5a02026d390ea1bb0c16a0e214e45613a3e3d885 > > Mike Rapoport (5): > userfaultfd.2: describe memory types that can be used from 4.11 > ioctl_userfaultfd.2: describe memory types that can be used from 4.11 > ioctl_userfaultfd.2: update UFFDIO_API description > userfaultfd.2: add Linux container migration use-case to NOTES > usefaultfd.2: add brief description of "non-cooperative" mode > > man2/ioctl_userfaultfd.2 | 46 ++++++++++++++++++++++++++++++++++++++-------- > man2/userfaultfd.2 | 25 ++++++++++++++++++++++--- > 2 files changed, 60 insertions(+), 11 deletions(-) > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
