+int echo_commitrw(int cmd, struct lustre_handle *conn, int objcount,
+ struct obd_ioobj *obj, int niocount, struct niobuf_local *res,
+ void *desc_private)
+{
+ struct niobuf_local *r = res;
+ int rc = 0;
+ int i;
+ ENTRY;
+
+ CDEBUG(D_PAGE, "%s %d obdos with %d IOs\n",
+ cmd == OBD_BRW_READ ? "reading" : "writing", objcount, niocount);
+
+ if (niocount && !r) {
+ CERROR("NULL res niobuf with niocount %d\n", niocount);
+ RETURN(-EINVAL);
+ }
+
+ for (i = 0; i < objcount; i++, obj++) {
+ int j;
+
+ for (j = 0 ; j < obj->ioo_bufcnt ; j++, r++) {
+ struct page *page = r->page;
+ unsigned long addr;
+
+ if (!page ||
+ !(addr = (unsigned long)page_address(page)) ||
+ !kern_addr_valid(addr)) {
+
+ CERROR("bad page %p, id %Ld (%d), buf %d/%d\n",
+ page, (unsigned long long)obj->ioo_id, i,
+ j, obj->ioo_bufcnt);
+ GOTO(commitrw_cleanup, rc = -EFAULT);
+ }
+
+ kunmap(page);
+ __free_pages(page, 0);
+ echo_pages--;
+ }
+ }
+ CDEBUG(D_PAGE, "%ld pages remain after commit\n", echo_pages);
+ RETURN(0);
+
+commitrw_cleanup:
+ CERROR("cleaning up %ld pages (%d obdos)\n",
+ niocount - (long)(r - res) - 1, objcount);
+ while (++r < res + niocount) {
+ struct page *page = r->page;
+
+ kunmap(page);
+ __free_pages(page, 0);
+ echo_pages--;
+ }
+ return rc;