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) <wi...@infradead.org>
Reviewed-by: Christoph Hellwig <h...@lst.de>
Acked-by: Jeff Layton <jlay...@kernel.org>
---
include/linux/pagemap.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index a8b108a9ac6e..5130503519b0 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.
--
2.30.2
