Commit d5170ce4 authored by David Hildenbrand's avatar David Hildenbrand Committed by Andrew Morton
Browse files

block: update comment of "struct bio_vec" regarding nth_page() 

Ever since commit 858c708d ("block: move the bi_size update out of
__bio_try_merge_page"), page_is_mergeable() no longer exists, and the
logic in bvec_try_merge_page() is now a simple page pointer comparison.

Link: https://lkml.kernel.org/r/20250901150359.867252-37-david@redhat.com


Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarLorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 56531761

include/linux/bvec.h

+2 −5
Original line number Diff line number Diff line
@@ -22,11 +22,8 @@ struct page; 
 * @bv_len:    Number of bytes in the address range.

 * @bv_offset: Start of the address range relative to the start of @bv_page.

 *

 * The following holds for a bvec if n * PAGE_SIZE < bv_offset + bv_len:

 *

 *   nth_page(@bv_page, n) == @bv_page + n

 *

 * This holds because page_is_mergeable() checks the above property.

 * All pages within a bio_vec starting from @bv_page are contiguous and

 * can simply be iterated (see bvec_advance()).

 */

struct bio_vec {

	struct page	*bv_page;