On Fri, Nov 20, 2020 at 09:20:43AM -0800, Linus Torvalds wrote:

On Fri, Nov 20, 2020 at 6:36 AM Will Deacon [off-list ref] wrote:

quoted

tlb_finish_mmu() takes two confusing and unused 'start'/'end' address
arguments. Remove them.

Ack, but please add the history to it.

Those arguments were used, up until 7a30df49f63a ("mm: mmu_gather:
remove __tlb_reset_range() for force flush").

And the thing is, using a range flush in theory might be better, but
for simplicity it's now doing a "fullmm" one, which is why those
arguments no longer matter.

(And I think we track the range better now too, which may be another
reason they aren't needed)

Yes, thanks for digging that up. I'll add it to the commit message in v2.

Will

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