On Wed, Jan 31, 2024 at 05:20:10AM +0000, Matthew Wilcox wrote: > I'd suggest that saving off current->journal_info is risky because > it might cover a real problem where you've taken a pagefault inside > a transaction (eg ext4 faulting while in the middle of a transaction on > the same filesystem that contains the faulting file). Agreed. > Seems to me that we shouldn't be writing to userspace while in the > middle of a transaction. We could even assert that in copy_to_user()? That sounds useful, but also rather expensive.
