On Wed 02-11-16 07:30:06, Christoph Hellwig wrote:
> On Tue, Nov 01, 2016 at 10:06:18PM +0100, Jan Kara wrote:
> > Convert DAX faults to use iomap infrastructure. We would not have to start
> > transaction in ext4_dax_fault() anymore since ext4_iomap_begin takes
> > care of that but so far we do that to avoid lock inversion of
> > transaction start with DAX entry lock which gets acquired in
> > dax_iomap_fault() before calling ->iomap_begin handler.
>
> So far I've tried to avoid the need to avoid having multiple iomap_ops
> for the same fs. Would you be fine with a new IOMAP_FAULT flag for write
> faults?
Yes, that's another option. If that's better, I'll redo the patch like
that.
Honza
--
Jan Kara <[email protected]>
SUSE Labs, CR
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