Hi Mike, I've applied this, but have a question. On 05/01/2017 07:43 AM, Mike Rapoport wrote: > The features handshake is not quite convenient. > Elaborate about it in the BUGS section. > > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> > --- > man2/ioctl_userfaultfd.2 | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2 > index e12b9de..50316de 100644 > --- a/man2/ioctl_userfaultfd.2 > +++ b/man2/ioctl_userfaultfd.2 > @@ -650,6 +650,15 @@ operations are Linux-specific. > .SH EXAMPLE > See > .BR userfaultfd (2). > +.SH BUGS > +In order to detect available userfault features and > +enable certain subset of those features I changed "certain" to "some". ("certain subset" here also would sound like "some particular subset" of those features.) Okay? > +the usefault file descriptor must be closed after the first > +.BR UFFDIO_API > +operation that queries features availability and re-opened before > +the second > +.BR UFFDIO_API > +call that actually enables the desired features. > .SH SEE ALSO > .BR ioctl (2), > .BR mmap (2), Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>