Re: [RFC PATCH v4 0/6] Promotion of Unmapped Page Cache Folios.

[Donet Tom]

On 4/12/25 5:19 AM, Matthew Wilcox wrote:
> On Fri, Apr 11, 2025 at 06:11:05PM -0400, Gregory Price wrote:
> > Unmapped page cache pages can be demoted to low-tier memory, but
> No.  Page cache should never be demoted to low-tier memory.
> NACK this patchset.

Hi Mathew,

I have one doubt. Under memory pressure, page cache allocations can
fall back to lower-tier memory, right? So later, if those page cache pages
become hot, shouldn't we promote them?

Thanks
Donet