Re: [PATCH] fuse: enable large folios (if writeback cache is unused)

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On Wed, 13 Aug 2025 at 01:02, Joanne Koong <joannelkoong@xxxxxxxxx> wrote:

> My understanding of strictlimit is that it's a way of preventing
> non-trusted filesystems from dirtying too many pages too quickly and
> thus taking up too much bandwidth. It imposes stricter / more
> conservative limits on how many pages a filesystem can dirty before it
> gets forcibly throttled (the bulk of the logic happens in
> balance_dirty_pages()). This is needed for fuse because fuse servers
> may be unprivileged and malicious or buggy. The feature was introduced
> in commit 5a53748568f7 ("mm/page-writeback.c: add strictlimit

Hmm, the commit message says that temp pages were causing the issues
that strictlimit is solving.  So maybe now that temp pages are gone,
strictlimit can also be removed?

Thanks,
Miklos




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