Re: [PATCH RFC] iomap: invalidate pages past eof in iomap_do_writepage()

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On Thu, Jun 02, 2022 at 08:59:01PM +0100, Matthew Wilcox wrote:
> On Thu, Jun 02, 2022 at 07:41:55PM +0000, Chris Mason wrote:
> > 
> > > On Jun 2, 2022, at 11:32 AM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote:
> > > 
> > > On Thu, Jun 02, 2022 at 04:52:52PM +1000, Dave Chinner wrote:
> > >> 
> > >> Further, I don't think we need to invalidate the folio, either. If
> > >> it's beyond EOF, then it is because a truncate is in progress that
> > >> means it is somebody else's problem to clean up. Hence we should
> > >> leave it to the truncate to deal with, just like the pre-2013 code
> > >> did....
> > > 
> > > Perfect, that works.
> > 
> > Ok, I’ll run it through xfstests and resend a v2.  Will this cover all of the subpage blocksize concerns?
> 
> I run with:
> export MKFS_OPTIONS="-m reflink=1,rmapbt=1 -i sparse=1 -b size=1024"
> 
> Dave may have other options he'd like to see.

No, that above is what I'd suggest.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx



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