115 	struct io_mapped_ubuf *imu = *slot;  in io_buffer_unmap()  local
119 	if (imu != &dummy_ubuf) {  in io_buffer_unmap()
120 		if (!refcount_dec_and_test(&imu->refs))  in io_buffer_unmap()
122 		for (i = 0; i < imu->nr_bvecs; i++)  in io_buffer_unmap()
123 			unpin_user_page(imu->bvec[i].bv_page);  in io_buffer_unmap()
124 		if (imu->acct_pages)  in io_buffer_unmap()
125 			io_unaccount_mem(ctx, imu->acct_pages);  in io_buffer_unmap()
126 		kvfree(imu);  in io_buffer_unmap()
414 		struct io_mapped_ubuf *imu;  in __io_sqe_buffers_update()  local
434 		err = io_sqe_buffer_register(ctx, iov, &imu, &last_hpage);  in __io_sqe_buffers_update()
443 				io_buffer_unmap(ctx, &imu);  in __io_sqe_buffers_update()
449 		ctx->user_bufs[i] = imu;  in __io_sqe_buffers_update()
816 		struct io_mapped_ubuf *imu = ctx->user_bufs[i];  in headpage_already_acct()  local
818 		for (j = 0; j < imu->nr_bvecs; j++) {  in headpage_already_acct()
819 			if (!PageCompound(imu->bvec[j].bv_page))  in headpage_already_acct()
821 			if (compound_head(imu->bvec[j].bv_page) == hpage)  in headpage_already_acct()
830 				 int nr_pages, struct io_mapped_ubuf *imu,  in io_buffer_account_pin()  argument
835 	imu->acct_pages = 0;  in io_buffer_account_pin()
838 			imu->acct_pages++;  in io_buffer_account_pin()
848 			imu->acct_pages += page_size(hpage) >> PAGE_SHIFT;  in io_buffer_account_pin()
852 	if (!imu->acct_pages)  in io_buffer_account_pin()
855 	ret = io_account_mem(ctx, imu->acct_pages);  in io_buffer_account_pin()
857 		imu->acct_pages = 0;  in io_buffer_account_pin()
957 	struct io_mapped_ubuf *imu = NULL;  in io_sqe_buffer_register()  local
981 	imu = kvmalloc(struct_size(imu, bvec, nr_pages), GFP_KERNEL);  in io_sqe_buffer_register()
982 	if (!imu)  in io_sqe_buffer_register()
985 	ret = io_buffer_account_pin(ctx, pages, nr_pages, imu, last_hpage);  in io_sqe_buffer_register()
993 	imu->ubuf = (unsigned long) iov->iov_base;  in io_sqe_buffer_register()
994 	imu->len = iov->iov_len;  in io_sqe_buffer_register()
995 	imu->nr_bvecs = nr_pages;  in io_sqe_buffer_register()
996 	imu->folio_shift = PAGE_SHIFT;  in io_sqe_buffer_register()
998 		imu->folio_shift = data.folio_shift;  in io_sqe_buffer_register()
999 	refcount_set(&imu->refs, 1);  in io_sqe_buffer_register()
1000 	off = (unsigned long) iov->iov_base & ((1UL << imu->folio_shift) - 1);  in io_sqe_buffer_register()
1001 	*pimu = imu;  in io_sqe_buffer_register()
1007 		vec_len = min_t(size_t, size, (1UL << imu->folio_shift) - off);  in io_sqe_buffer_register()
1008 		bvec_set_page(&imu->bvec[i], pages[i], vec_len, off);  in io_sqe_buffer_register()
1014 		kvfree(imu);  in io_sqe_buffer_register()
1089 			   struct io_mapped_ubuf *imu,  in io_import_fixed()  argument
1095 	if (WARN_ON_ONCE(!imu))  in io_import_fixed()
1100 	if (unlikely(buf_addr < imu->ubuf || buf_end > (imu->ubuf + imu->len)))  in io_import_fixed()
1107 	offset = buf_addr - imu->ubuf;  in io_import_fixed()
1108 	iov_iter_bvec(iter, ddir, imu->bvec, imu->nr_bvecs, offset + len);  in io_import_fixed()
1127 		const struct bio_vec *bvec = imu->bvec;  in io_import_fixed()
1138 			seg_skip = 1 + (offset >> imu->folio_shift);  in io_import_fixed()
1143 			iter->iov_offset = offset & ((1UL << imu->folio_shift) - 1);  in io_import_fixed()