https://bugzilla.kernel.org/show_bug.cgi?id=201631 --- Comment #28 from Jan Kara (jack@xxxxxxx) --- (In reply to Benjamin Herrenschmidt from comment #24) > Out of curiosity, how does this work in the context of pages that are GUPed > either by a driver or by KVM when using file backed guest memory ? > > GUP will not "see" the mkclean or attempt at making read only... That's a good question :) Well behaved GUP users use mmu notifiers as Aneesh wrote to "see" mkclean. Badly behaved GUP users (and there's quite a few of them) don't and that can result in kernel crashes, data loss, or checksum failures in storage stack. The latest discussion on this topic is here if you're interested: https://lwn.net/Articles/774411/ -- You are receiving this mail because: You are watching the assignee of the bug.
