| Message ID | 20210331184728.1188084-12-willy@infradead.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Memory Folios | expand |
On Wed, Mar 31, 2021 at 07:47:12PM +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). Looks good, Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 6749c47d3c33..3aefe6558f7d 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -482,6 +482,17 @@ 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. + */ +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.
This helper returns the page index of the next folio in the file (ie the end of this folio, plus one). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- include/linux/pagemap.h | 11 +++++++++++ 1 file changed, 11 insertions(+)