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    SubjectRe: [PATCH v5 3/5] fs: Add aio iopriority support
    Hi Adam,

    Thank you for the patch! Yet something to improve:

    [auto build test ERROR on next-20180517]
    [cannot apply to linus/master block/for-next v4.17-rc6 v4.17-rc5 v4.17-rc4 v4.17-rc6]
    [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

    url: https://github.com/0day-ci/linux/commits/adam-manzanares-wdc-com/AIO-add-per-command-iopriority/20180522-232203
    config: x86_64-randconfig-s0-05230027 (attached as .config)
    compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
    reproduce:
    # save the attached .config to linux build tree
    make ARCH=x86_64

    All errors (new ones prefixed by >>):

    fs/aio.o: In function `aio_prep_rw':
    >> fs/aio.c:1460: undefined reference to `ioprio_check_cap'

    vim +1460 fs/aio.c

    1440
    1441 static int aio_prep_rw(struct kiocb *req, struct iocb *iocb)
    1442 {
    1443 int ret;
    1444
    1445 req->ki_filp = fget(iocb->aio_fildes);
    1446 if (unlikely(!req->ki_filp))
    1447 return -EBADF;
    1448 req->ki_complete = aio_complete_rw;
    1449 req->ki_pos = iocb->aio_offset;
    1450 req->ki_flags = iocb_flags(req->ki_filp);
    1451 if (iocb->aio_flags & IOCB_FLAG_RESFD)
    1452 req->ki_flags |= IOCB_EVENTFD;
    1453 req->ki_hint = file_write_hint(req->ki_filp);
    1454 if (iocb->aio_flags & IOCB_FLAG_IOPRIO) {
    1455 /*
    1456 * If the IOCB_FLAG_IOPRIO flag of aio_flags is set, then
    1457 * aio_reqprio is interpreted as an I/O scheduling
    1458 * class and priority.
    1459 */
    > 1460 ret = ioprio_check_cap(iocb->aio_reqprio);
    1461 if (ret) {
    1462 pr_debug("aio ioprio check cap error\n");
    1463 return -EINVAL;
    1464 }
    1465
    1466 req->ki_ioprio = iocb->aio_reqprio;
    1467 } else
    1468 req->ki_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 0);
    1469
    1470 ret = kiocb_set_rw_flags(req, iocb->aio_rw_flags);
    1471 if (unlikely(ret))
    1472 fput(req->ki_filp);
    1473 return ret;
    1474 }
    1475

    ---
    0-DAY kernel test infrastructure Open Source Technology Center
    https://lists.01.org/pipermail/kbuild-all Intel Corporation
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