On 06.08.25 15:16, Jason Gunthorpe wrote:
On Wed, Aug 06, 2025 at 02:35:15PM +0200, David Hildenbrand wrote:
On 05.08.25 03:24, Alex Williamson wrote:
+/**
+ * num_pages_contiguous() - determine the number of contiguous pages
+ * that represent contiguous PFNs
+ * @pages: an array of page pointers
+ * @nr_pages: length of the array, at least 1
+ *
+ * Determine the number of contiguous pages that represent contiguous PFNs
+ * in @pages, starting from the first page.
+ *
+ * In kernel configs where contiguous pages might not imply contiguous PFNs
+ * over memory section boundaries, this function will stop at the memory
+ * section boundary.
Maybe:
In some kernel configs contiguous PFNs will not have contiguous struct
pages. In these configurations num_pages_contiguous() will return a
smaller than ideal number. The caller should continue to check for pfn
contiguity after each call to num_pages_contiguous().
Yeah, sounds great, thanks!
--
Cheers,
David / dhildenb
