Messages in this thread | | | Subject | Re: [PATCH v4 1/1] mm: introduce put_user_page*(), placeholder versions | From | William Kucharski <> | Date | Wed, 20 Mar 2019 08:55:17 -0600 |
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> On Mar 19, 2019, at 10:33 PM, Jerome Glisse <jglisse@redhat.com> wrote: > > So i believe best we could do is send a SIGBUS to the process that has > GUPed a range of a file that is being truncated this would match what > we do for CPU acces. There is no reason access through GUP should be > handled any differently.
This should be done lazily, as there's no need to send the SIGBUS unless the GUPed page is actually accessed post-truncate.
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