Re: [PATCH v3 2/2] secretmem: optimize page_is_secretmem()
From: Matthew Wilcox <willy@infradead.org>
Date: 2021-05-07 15:04:34
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linux-api, linux-arch, linux-fsdevel, linux-kselftest, linux-mm, linux-riscv, lkml
On Tue, Apr 20, 2021 at 06:00:49PM +0300, Mike Rapoport wrote:
+ mapping = (struct address_space *) + ((unsigned long)page->mapping & ~PAGE_MAPPING_FLAGS); + + if (mapping != page->mapping) + return false; + + return page->mapping->a_ops == &secretmem_aops;
... why do you go back to page->mapping here? return mapping->a_ops == &secretmem_aops _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel