Messages in this thread | | | From | Linus Torvalds <> | Date | Thu, 17 Sep 2020 15:25:35 -0700 | Subject | Re: [PATCH 1/4] mm: Trial do_wp_page() simplification |
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On Thu, Sep 17, 2020 at 3:09 PM Jason Gunthorpe <jgg@ziepe.ca> wrote: > > My advice for this -rc fix is to go with a single bit in the mm_struct > set on any call to pin_user_pages*
Ack, except make sure it's a byte rather than a bitfield that could have races. Or even just a separate atomic_t.
Keep it simple ans stupid and obvious. As you say, we can aim for cleanups later, make it obvious and reliable right now.
Linus
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