Messages in this thread | | | Date | Tue, 20 Jul 2021 13:42:11 +0300 | From | Mike Rapoport <> | Subject | Re: [PATCH v14 014/138] mm/filemap: Add folio_next_index() |
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On Thu, Jul 15, 2021 at 04:35:00AM +0100, Matthew Wilcox (Oracle) wrote: > This helper returns the page index of the next folio in the file (ie > the end of this folio, plus one). > > 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> > Reviewed-by: David Howells <dhowells@redhat.com> > --- > include/linux/pagemap.h | 11 +++++++++++ > 1 file changed, 11 insertions(+)
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
> diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h > index f7c165b5991f..bd0e7e91bfd4 100644 > --- a/include/linux/pagemap.h > +++ b/include/linux/pagemap.h > @@ -406,6 +406,17 @@ static inline pgoff_t folio_index(struct folio *folio) > return folio->index; > } > > +/** > + * folio_next_index - Get the index of the next folio. > + * @folio: The current folio. > + * > + * Return: The index of the folio which follows this folio in the file. > + */
Maybe note that index is in units of pages?
> +static inline pgoff_t folio_next_index(struct folio *folio) > +{ > + return folio->index + folio_nr_pages(folio); > +} > + > /** > * folio_file_page - The page for a particular index. > * @folio: The folio which contains this index. > -- > 2.30.2 > >
-- Sincerely yours, Mike.
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