On Tue, Mar 19, 2019 at 03:19:30PM -0700, Andrew Morton wrote: > On Sun, 17 Mar 2019 11:34:31 -0700 ira.weiny@xxxxxxxxx wrote: > > > Resending after rebasing to the latest mm tree. > > > > HFI1, qib, and mthca, use get_user_pages_fast() due to it performance > > advantages. These pages can be held for a significant time. But > > get_user_pages_fast() does not protect against mapping FS DAX pages. > > > > Introduce FOLL_LONGTERM and use this flag in get_user_pages_fast() which > > retains the performance while also adding the FS DAX checks. XDP has also > > shown interest in using this functionality.[1] > > > > In addition we change get_user_pages() to use the new FOLL_LONGTERM flag and > > remove the specialized get_user_pages_longterm call. > > It would be helpful to include your response to Christoph's question > (http://lkml.kernel.org/r/20190220180255.GA12020@xxxxxxxxxxxxxxxxxxxxxxxxx) > in the changelog. Because if one person was wondering about this, > others will likely do so. > > We have no record of acks or reviewed-by's. At least one was missed > (http://lkml.kernel.org/r/CAOg9mSTTcD-9bCSDfC0WRYqfVrNB4TwOzL0c4+6QXi-N_Y43Vw@xxxxxxxxxxxxxx), > but that is very very partial. That is my bad. Sorry to Mike. And I have added him. > > This patchset is fairly DAX-centered, but Dan wasn't cc'ed! Agreed, I'm new to changing things which affect this many sub-systems and I struggled with who should be CC'ed (get_maintainer.pl returned a very large list :-(. I fear I may have cc'ed too many people, and the wrong people apparently, so that may be affecting the review... So again my apologies. I don't know if Dan is going to get a chance to put a reviewed-by on them this week but I thought I would send this note to let you know I'm not ignoring your feedback. Just waiting a bit before resending to hopefully get some more acks/reviewed bys. Thanks, Ira > > So ho hum. I'll scoop them up and shall make the above changes to the > [1/n] changelog, but we still have some work to do. >
