Commit f5443d0d authored by Gao Xiang's avatar Gao Xiang
Browse files

erofs: use memcpy_to_folio() to replace copy_to_iter() 



Using copy_to_iter() here is overkill and even messy.

Signed-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250709034614.2780117-1-hsiangkao@linux.alibaba.com
parent 99f7619a

fs/erofs/fileio.c

+1 −9
Original line number Diff line number Diff line
@@ -96,8 +96,6 @@ static int erofs_fileio_scan_folio(struct erofs_fileio *io, struct folio *folio) 
	struct erofs_map_blocks *map = &io->map;

	unsigned int cur = 0, end = folio_size(folio), len, attached = 0;

	loff_t pos = folio_pos(folio), ofs;

	struct iov_iter iter;

	struct bio_vec bv;

	int err = 0;



	erofs_onlinefolio_init(folio);
@@ -122,13 +120,7 @@ static int erofs_fileio_scan_folio(struct erofs_fileio *io, struct folio *folio) 
				err = PTR_ERR(src);

				break;

			}

			bvec_set_folio(&bv, folio, len, cur);

			iov_iter_bvec(&iter, ITER_DEST, &bv, 1, len);

			if (copy_to_iter(src, len, &iter) != len) {

				erofs_put_metabuf(&buf);

				err = -EIO;

				break;

			}

			memcpy_to_folio(folio, cur, src, len);

			erofs_put_metabuf(&buf);

		} else if (!(map->m_flags & EROFS_MAP_MAPPED)) {

			folio_zero_segment(folio, cur, cur + len);