On Thu, 15 Apr 2021, Axel Rasmussen wrote:

Base

This series is based on (and therefore should apply cleanly to) the tag "v5.12-rc7-mmots-2021-04-11-20-49", additionally with Peter's selftest cleanup series applied first:

https://lore.kernel.org/patchwork/cover/1412450/

Changelog

v2->v3:

• Picked up {Reviewed,Acked}-by's.
• Reorder commits: introduce CONTINUE before MINOR registration. [Hugh, Peter]
• Don't try to {unlock,put}_page an xarray value in shmem_getpage_gfp. [Hugh]
• Move enum mcopy_atomic_mode forward declare out of CONFIG_HUGETLB_PAGE. [Hugh]
• Keep mistakenly removed UFFD_USER_MODE_ONLY in selftest. [Peter]
• Cleanup context management in self test (make clear implicit, remove unneeded return values now that we have err()). [Peter]
• Correct dst_pte argument to dst_pmd in shmem_mcopy_atomic_pte macro. [Hugh]
• Mention the new shmem support feature in documentation. [Hugh]

I shall ignore this v3 completely: "git send-email" is a wonderful tool for mailing out patchsets in quick succession, but I have not yet mastered "git send-review" to do the thinking for me as quickly.

Still deliberating on 4/9 and 9/9 of v2: they're very close, but raise userfaultfd questions I still have to answer myself.

Hugh