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Date: Tue, 10 Aug 2021 22:41:30 +0100 From: David Howells <dhowells@...hat.com> To: "Matthew Wilcox (Oracle)" <willy@...radead.org> Cc: dhowells@...hat.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, Christoph Hellwig <hch@....de> Subject: Re: [PATCH v14 081/138] mm: Add folio_evictable() Matthew Wilcox (Oracle) <willy@...radead.org> wrote: > This is the folio equivalent of page_evictable(). Unfortunately, it's > different from !folio_test_unevictable(), but I think it's used in places > where you have to be a VM expert and can reasonably be expected to know > the difference. It would be useful to say how it is different. I'm guessing it's because a page is always entirely mlocked or not, but a folio might be partially mlocked? David
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