109 		struct io_mapped_ubuf *imu = node->buf;  in io_buffer_unmap()  local
111 		if (!refcount_dec_and_test(&imu->refs))  in io_buffer_unmap()
113 		for (i = 0; i < imu->nr_bvecs; i++)  in io_buffer_unmap()
114 			unpin_user_page(imu->bvec[i].bv_page);  in io_buffer_unmap()
115 		if (imu->acct_pages)  in io_buffer_unmap()
116 			io_unaccount_mem(ctx, imu->acct_pages);  in io_buffer_unmap()
117 		kvfree(imu);  in io_buffer_unmap()
579 		struct io_mapped_ubuf *imu;  in headpage_already_acct()  local
583 		imu = node->buf;  in headpage_already_acct()
584 		for (j = 0; j < imu->nr_bvecs; j++) {  in headpage_already_acct()
585 			if (!PageCompound(imu->bvec[j].bv_page))  in headpage_already_acct()
587 			if (compound_head(imu->bvec[j].bv_page) == hpage)  in headpage_already_acct()
596 				 int nr_pages, struct io_mapped_ubuf *imu,  in io_buffer_account_pin()  argument
601 	imu->acct_pages = 0;  in io_buffer_account_pin()
604 			imu->acct_pages++;  in io_buffer_account_pin()
614 			imu->acct_pages += page_size(hpage) >> PAGE_SHIFT;  in io_buffer_account_pin()
618 	if (!imu->acct_pages)  in io_buffer_account_pin()
621 	ret = io_account_mem(ctx, imu->acct_pages);  in io_buffer_account_pin()
623 		imu->acct_pages = 0;  in io_buffer_account_pin()
719 	struct io_mapped_ubuf *imu = NULL;  in io_sqe_buffer_register()  local
751 	imu = kvmalloc(struct_size(imu, bvec, nr_pages), GFP_KERNEL);  in io_sqe_buffer_register()
752 	if (!imu)  in io_sqe_buffer_register()
755 	ret = io_buffer_account_pin(ctx, pages, nr_pages, imu, last_hpage);  in io_sqe_buffer_register()
763 	imu->ubuf = (unsigned long) iov->iov_base;  in io_sqe_buffer_register()
764 	imu->len = iov->iov_len;  in io_sqe_buffer_register()
765 	imu->nr_bvecs = nr_pages;  in io_sqe_buffer_register()
766 	imu->folio_shift = PAGE_SHIFT;  in io_sqe_buffer_register()
768 		imu->folio_shift = data.folio_shift;  in io_sqe_buffer_register()
769 	refcount_set(&imu->refs, 1);  in io_sqe_buffer_register()
770 	off = (unsigned long) iov->iov_base & ((1UL << imu->folio_shift) - 1);  in io_sqe_buffer_register()
771 	node->buf = imu;  in io_sqe_buffer_register()
777 		vec_len = min_t(size_t, size, (1UL << imu->folio_shift) - off);  in io_sqe_buffer_register()
778 		bvec_set_page(&imu->bvec[i], pages[i], vec_len, off);  in io_sqe_buffer_register()
784 		kvfree(imu);  in io_sqe_buffer_register()
864 			   struct io_mapped_ubuf *imu,  in io_import_fixed()  argument
870 	if (WARN_ON_ONCE(!imu))  in io_import_fixed()
875 	if (unlikely(buf_addr < imu->ubuf || buf_end > (imu->ubuf + imu->len)))  in io_import_fixed()
882 	offset = buf_addr - imu->ubuf;  in io_import_fixed()
883 	iov_iter_bvec(iter, ddir, imu->bvec, imu->nr_bvecs, len);  in io_import_fixed()
902 		const struct bio_vec *bvec = imu->bvec;  in io_import_fixed()
911 			seg_skip = 1 + (offset >> imu->folio_shift);  in io_import_fixed()
915 			iter->iov_offset = offset & ((1UL << imu->folio_shift) - 1);  in io_import_fixed()