Re: [PATCH v3 0/8] iomap, xfs: improve zero range flushing and lookup

[Christoph Hellwig <hch@infradead.org>]

On Mon, Mar 09, 2026 at 09:44:58AM -0400, Brian Foster wrote:
> Christoph discovered a regression with zero range in zoned mode on v2 of
> the series. The problem is that the zoned mode iomap_begin() relied on
> the hole mapping flush to handle the case where writes are pending but
> blocks have not yet been mapped into the data fork for the first time.
> Patches 1-2 lift the flush into the begin handler, document the purpose,
> and clean up the logic a bit. They are inserted at the beginning of the
> series to avoid regression from removing the flush from iomap in patch
> 3, but ordering is not critical as zoned support is experimental.

Thanks!  I've run this through my usual zoned testing over last night
and it passes without regression.  I'll also add it to bigger automated
CI, but I expect it to do just fine there as well.