| Date | Wed, 16 Jun 2021 12:38:45 +0100 | From | Matthew Wilcox <> | Subject | Re: [PATCH v11 13/33] mm/filemap: Add folio_index(), folio_file_page() and folio_contains() |
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On Wed, Jun 16, 2021 at 11:03:23AM +0100, David Howells wrote: > Matthew Wilcox (Oracle) <willy@infradead.org> wrote: > > > folio_index() is the equivalent of page_index() for folios. > > folio_file_page() is the equivalent of find_subpage(). > > folio_contains() is the equivalent of thp_contains(). > > > > No changes to generated code. > > > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> > > Reviewed-by: Christoph Hellwig <hch@lst.de> > > Acked-by: Jeff Layton <jlayton@kernel.org> > > Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> > > Acked-by: Vlastimil Babka <vbabka@suse.cz> > > Reviewed-by: William Kucharski <william.kucharski@oracle.com> > > folio_subpage() might be a better name than folio_file_page().
I want it to be clear that you can't call this for folios which aren't part of a file. For example, anonymous memory.
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