Re: [PATCH v5 03/10] xfs: Refactor xfs_reflink_end_cow_extent()

[Christoph Hellwig]

On Mon, Mar 10, 2025 at 06:39:39PM +0000, John Garry wrote:
> Refactor xfs_reflink_end_cow_extent() into separate parts which process
> the CoW range and commit the transaction.
> 
> This refactoring will be used in future for when it is required to commit
> a range of extents as a single transaction, similar to how it was done
> pre-commit d6f215f359637.

Darrick pointed out that if you do more than just a tiny number
of extents per transactions you run out of log reservations very
quickly here:

https://lore.kernel.org/all/20240329162936.GI6390@frogsfrogsfrogs/

how does your scheme deal with that?