[PATCH 01/12] mm: Remove PFN_MAP, PFN_SG_CHAIN and PFN_SG_LAST

[Christoph Hellwig]

On Thu, May 29, 2025 at 04:32:02PM +1000, Alistair Popple wrote:
> The PFN_MAP flag is no longer used for anything, so remove it. The
> PFN_SG_CHAIN and PFN_SG_LAST flags never appear to have been used so
> also remove them.
> 
> Signed-off-by: Alistair Popple <apopple at nvidia.com>
> Reviewed-by: Christoph Hellwig <hch at lst.de>

FYI, unlike the rest of the series that has some non-trivial work
this feels like a 6.16-rc candidate as it just removes dead code
and we'd better get that in before a new user or even just a conflict
sneaks in.