Re: [PATCH 1/5] mm/filemap: gate dropbehind invalidate on folio !dirty && !writeback

On Tue, May 27, 2025 at 07:28:52AM -0600, Jens Axboe wrote:

It's possible for the folio to either get marked for writeback or redirtied. Add a helper, filemap_end_dropbehind(), which guards the folio_unmap_invalidate() call behind check for the folio being both non-dirty and not under writeback AFTER the folio lock has been acquired. Use this helper folio_end_dropbehind_write().

Looks good:

Reviewed-by: Christoph Hellwig hch@lst.de