Warnings before patch:
files: ['include/linux/mm.h', 'net/9p/trans_virtio.c']
Warning: include/linux/mm.h:244 No description found for return value of 'folio_page_idx'
Warning: include/linux/mm.h:1666 No description found for return value of 'thp_order'
Warning: include/linux/mm.h:2395 No description found for return value of 'is_zero_page'
Warning: include/linux/mm.h:2406 No description found for return value of 'is_zero_folio'
Warning: include/linux/mm.h:2672 No description found for return value of 'folio_expected_ref_count'
Warning: include/linux/mm.h:3387 No description found for return value of 'ptdesc_test_kernel'
Warning: net/9p/trans_virtio.c:171 No description found for return value of 'pack_sg_list'
Warning: net/9p/trans_virtio.c:218 No description found for return value of 'pack_sg_list_p'
Warning: net/9p/trans_virtio.c:255 No description found for return value of 'p9_virtio_request'
Warning: net/9p/trans_virtio.c:422 No description found for return value of 'p9_virtio_zc_request'
Warning: net/9p/trans_virtio.c:591 No description found for return value of 'p9_virtio_probe'
Warning: net/9p/trans_virtio.c:692 No description found for return value of 'p9_virtio_create'
Warning: include/linux/mm.h:244 No description found for return value of 'folio_page_idx'
Warning: include/linux/mm.h:1666 No description found for return value of 'thp_order'
Warning: include/linux/mm.h:2395 No description found for return value of 'is_zero_page'
Warning: include/linux/mm.h:2406 No description found for return value of 'is_zero_folio'
Warning: include/linux/mm.h:2672 No description found for return value of 'folio_expected_ref_count'
Warning: include/linux/mm.h:3387 No description found for return value of 'ptdesc_test_kernel'
Warning: net/9p/trans_virtio.c:171 No description found for return value of 'pack_sg_list'
Warning: net/9p/trans_virtio.c:218 No description found for return value of 'pack_sg_list_p'
Warning: net/9p/trans_virtio.c:255 No description found for return value of 'p9_virtio_request'
Warning: net/9p/trans_virtio.c:422 No description found for return value of 'p9_virtio_zc_request'
Warning: net/9p/trans_virtio.c:591 No description found for return value of 'p9_virtio_probe'
Warning: net/9p/trans_virtio.c:692 No description found for return value of 'p9_virtio_create'

Current warnings:
files: ['include/linux/mm.h', 'net/9p/trans_virtio.c']
Warning: include/linux/mm.h:244 No description found for return value of 'folio_page_idx'
Warning: include/linux/mm.h:1666 No description found for return value of 'thp_order'
Warning: include/linux/mm.h:2395 No description found for return value of 'is_zero_page'
Warning: include/linux/mm.h:2406 No description found for return value of 'is_zero_folio'
Warning: include/linux/mm.h:2672 No description found for return value of 'folio_expected_ref_count'
Warning: include/linux/mm.h:3389 No description found for return value of 'ptdesc_test_kernel'
Warning: net/9p/trans_virtio.c:165 No description found for return value of 'pack_sg_list'
Warning: net/9p/trans_virtio.c:212 No description found for return value of 'pack_sg_list_p'
Warning: net/9p/trans_virtio.c:249 No description found for return value of 'p9_virtio_request'
Warning: net/9p/trans_virtio.c:416 No description found for return value of 'p9_virtio_zc_request'
Warning: net/9p/trans_virtio.c:585 No description found for return value of 'p9_virtio_probe'
Warning: net/9p/trans_virtio.c:686 No description found for return value of 'p9_virtio_create'
Warning: include/linux/mm.h:244 No description found for return value of 'folio_page_idx'
Warning: include/linux/mm.h:1666 No description found for return value of 'thp_order'
Warning: include/linux/mm.h:2395 No description found for return value of 'is_zero_page'
Warning: include/linux/mm.h:2406 No description found for return value of 'is_zero_folio'
Warning: include/linux/mm.h:2672 No description found for return value of 'folio_expected_ref_count'
Warning: include/linux/mm.h:3389 No description found for return value of 'ptdesc_test_kernel'
Warning: net/9p/trans_virtio.c:165 No description found for return value of 'pack_sg_list'
Warning: net/9p/trans_virtio.c:212 No description found for return value of 'pack_sg_list_p'
Warning: net/9p/trans_virtio.c:249 No description found for return value of 'p9_virtio_request'
Warning: net/9p/trans_virtio.c:416 No description found for return value of 'p9_virtio_zc_request'
Warning: net/9p/trans_virtio.c:585 No description found for return value of 'p9_virtio_probe'
Warning: net/9p/trans_virtio.c:686 No description found for return value of 'p9_virtio_create'

Warnings before: 24 after: 24