137 static inline bool is_partial_io(struct bio_vec *bvec)  in is_partial_io()  argument
139 	return bvec->bv_len != PAGE_SIZE;  in is_partial_io()
142 static inline bool is_partial_io(struct bio_vec *bvec)  in is_partial_io()  argument
172 static void update_position(u32 *index, int *offset, struct bio_vec *bvec)  in update_position()  argument
174 	*index  += (*offset + bvec->bv_len) / PAGE_SIZE;  in update_position()
175 	*offset = (*offset + bvec->bv_len) % PAGE_SIZE;  in update_position()
484 static int read_from_bdev_async(struct zram *zram, struct bio_vec *bvec,  in read_from_bdev_async()  argument
495 	if (!bio_add_page(bio, bvec->bv_page, bvec->bv_len, bvec->bv_offset)) {  in read_from_bdev_async()
522 	struct bio_vec bvec;  in zram_sync_read()  local
528 	read_from_bdev_async(zram, &bvec, entry, bio);  in zram_sync_read()
536 static int read_from_bdev_sync(struct zram *zram, struct bio_vec *bvec,  in read_from_bdev_sync()  argument
553 static int read_from_bdev_sync(struct zram *zram, struct bio_vec *bvec,  in read_from_bdev_sync()  argument
561 static int read_from_bdev(struct zram *zram, struct bio_vec *bvec,  in read_from_bdev()  argument
565 		return read_from_bdev_sync(zram, bvec, entry, parent);  in read_from_bdev()
567 		return read_from_bdev_async(zram, bvec, entry, parent);  in read_from_bdev()
570 static int write_to_bdev(struct zram *zram, struct bio_vec *bvec,  in write_to_bdev()  argument
589 	if (!bio_add_page(bio, bvec->bv_page, bvec->bv_len,  in write_to_bdev()
590 					bvec->bv_offset)) {  in write_to_bdev()
623 static int write_to_bdev(struct zram *zram, struct bio_vec *bvec,  in write_to_bdev()  argument
631 static int read_from_bdev(struct zram *zram, struct bio_vec *bvec,  in read_from_bdev()  argument
993 			struct bio_vec bvec;  in __zram_bvec_read()  local
997 			bvec.bv_page = page;  in __zram_bvec_read()
998 			bvec.bv_len = PAGE_SIZE;  in __zram_bvec_read()
999 			bvec.bv_offset = 0;  in __zram_bvec_read()
1000 			return read_from_bdev(zram, &bvec,  in __zram_bvec_read()
1047 static int zram_bvec_read(struct zram *zram, struct bio_vec *bvec,  in zram_bvec_read()  argument
1053 	page = bvec->bv_page;  in zram_bvec_read()
1054 	if (is_partial_io(bvec)) {  in zram_bvec_read()
1061 	ret = __zram_bvec_read(zram, page, index, bio, is_partial_io(bvec));  in zram_bvec_read()
1065 	if (is_partial_io(bvec)) {  in zram_bvec_read()
1066 		void *dst = kmap_atomic(bvec->bv_page);  in zram_bvec_read()
1069 		memcpy(dst + bvec->bv_offset, src + offset, bvec->bv_len);  in zram_bvec_read()
1074 	if (is_partial_io(bvec))  in zram_bvec_read()
1080 static int __zram_bvec_write(struct zram *zram, struct bio_vec *bvec,  in __zram_bvec_write()  argument
1089 	struct page *page = bvec->bv_page;  in __zram_bvec_write()
1121 			ret = write_to_bdev(zram, bvec, index, bio, &element);  in __zram_bvec_write()
1210 static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,  in zram_bvec_write()  argument
1218 	vec = *bvec;  in zram_bvec_write()
1219 	if (is_partial_io(bvec)) {  in zram_bvec_write()
1233 		src = kmap_atomic(bvec->bv_page);  in zram_bvec_write()
1235 		memcpy(dst + offset, src + bvec->bv_offset, bvec->bv_len);  in zram_bvec_write()
1246 	if (is_partial_io(bvec))  in zram_bvec_write()
1294 static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,  in zram_bvec_rw()  argument
1301 	generic_start_io_acct(q, op, bvec->bv_len >> SECTOR_SHIFT,  in zram_bvec_rw()
1306 		ret = zram_bvec_read(zram, bvec, index, offset, bio);  in zram_bvec_rw()
1307 		flush_dcache_page(bvec->bv_page);  in zram_bvec_rw()
1310 		ret = zram_bvec_write(zram, bvec, index, offset, bio);  in zram_bvec_rw()
1333 	struct bio_vec bvec;  in __zram_make_request()  local
1350 	bio_for_each_segment(bvec, bio, iter) {  in __zram_make_request()
1351 		struct bio_vec bv = bvec;  in __zram_make_request()
1352 		unsigned int unwritten = bvec.bv_len;  in __zram_make_request()