[Bug 201631] WARNING: CPU: 11 PID: 29593 at fs/ext4/inode.c:3927 .ext4_set_page_dirty+0x70/0xb0

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https://bugzilla.kernel.org/show_bug.cgi?id=201631

aneesh.kumar@xxxxxxxxxxxxx changed:

           What    |Removed                     |Added
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                 CC|                            |aneesh.kumar@xxxxxxxxxxxxx

--- Comment #25 from aneesh.kumar@xxxxxxxxxxxxx ---
(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...

page_mkclean_one do call
        mmu_notifier_invalidate_range_start(vma->vm_mm, start, end);

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