Re: [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone

From: Christoph Hellwig
Date: Wed Jan 25 2017 - 05:20:17 EST

On Wed, Jan 25, 2017 at 11:15:17AM +0100, Michal Hocko wrote:
> I think we are missing a check for fatal_signal_pending in
> iomap_file_buffered_write. This means that an oom victim can consume the
> full memory reserves. What do you think about the following? I haven't
> tested this but it mimics generic_perform_write so I guess it should
> work.

Hi Michal,

this looks reasonable to me. But we have a few more such loops,
maybe it makes sense to move the check into iomap_apply?