Re: [PATCH v2] mm/filemap: avoid costly reclaim for high-order folio allocations

From: Christoph Hellwig

Date: Wed Apr 22 2026 - 02:11:44 EST


On Mon, Apr 20, 2026 at 07:41:03PM +0100, Matthew Wilcox wrote:
> > 5d8edfb900d5 came with no performance testing results. Does anyone
> > have any evidence that it improved anything? By how much?
>
> Christoph reported it doubled write performance with NFS once NFS was
> converted to use it.

For the right workloads the same is true for local file systems.