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SubjectRe: Automatic NUMA balancing patches for tip-urgent/stable

* Mel Gorman <> wrote:

> Bah, I have tip as a remote tree but looked at my local copy of
> the commits in the incorrect branch. Lets try this again
> 37bf06375c90a42fe07b9bebdb07bc316ae5a0ce..afcae2655b0ab67e65f161b1bb214efcfa1db415

Ok, these work a lot better and cherry-pick cleanly on top of -rc7.

> 10fc05d0e551146ad6feb0ab8902d28a2d3c5624 mm: numa: Document automatic NUMA balancing sysctls

We can certainly leave out this one - the rest still cherry-picks

> c69307d533d7aa7cc8894dbbb8a274599f8630d7 sched/numa: Fix comments

I was able to leave out this one as well.

> 0c3a775e1e0b069bf765f8355b723ce0d18dcc6c mm: numa: Do not account for a hinting fault if we raced
> ff9042b11a71c81238c70af168cd36b98a6d5a3c mm: Wait for THP migrations to complete during NUMA hinting faults
> b8916634b77bffb233d8f2f45703c80343457cc1 mm: Prevent parallel splits during THP migration
> 8191acbd30c73e45c24ad16c372e0b42cc7ac8f8 mm: numa: Sanitize task_numa_fault() callsites
> a54a407fbf7735fd8f7841375574f5d9b0375f93 mm: Close races between THP migration and PMD numa clearing
> afcae2655b0ab67e65f161b1bb214efcfa1db415 mm: Account for a THP NUMA hinting update as one PTE update

Ok, these seem essential and cherry-pick cleanly.

Would be nice to avoid the 'Sanitize task_numa_fault() callsites'
change, but the remaining fixes rely on it and are well tested

I've stuck these into tip:core/urgent with a -stable tag and will
send them to Linus if he cuts an -rc8 (which seems unlikely at this
point though).

If there's no -rc8 then please forward the above list of 6 commits
to Greg so that it can be applied to -stable.



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