From: kbuild test robot <lkp@intel.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: kbuild-all@01.org, linux-xfs@vger.kernel.org,
Brian Foster <bfoster@redhat.com>
Subject: [xfs-linux:xfs-4.18-merge 66/85] fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
Date: Wed, 16 May 2018 06:59:58 +0800 [thread overview]
Message-ID: <201805160657.uyigUTOB%fengguang.wu@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git xfs-4.18-merge
head: 68932e193b273d94e4291d70301e42c3658d1805
commit: a919a9fe5506389209d5e0759d8965d966802162 [66/85] xfs: refactor quota limits initialization
reproduce:
# apt-get install sparse
git checkout a919a9fe5506389209d5e0759d8965d966802162
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
>> fs/xfs/xfs_qm.c:639:39: sparse: cast from restricted __be16
>> fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
>> fs/xfs/xfs_qm.c:639:39: sparse: cast from restricted __be16
>> fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
>> fs/xfs/xfs_qm.c:639:39: sparse: cast from restricted __be16
>> fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
>> fs/xfs/xfs_qm.c:639:39: sparse: cast from restricted __be16
>> fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
>> fs/xfs/xfs_qm.c:639:39: sparse: cast from restricted __be16
>> fs/xfs/xfs_qm.c:639:39: sparse: cast to restricted __be32
>> fs/xfs/xfs_qm.c:639:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:641:39: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:641:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:641:39: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:641:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:641:39: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:641:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:641:39: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:641:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:641:39: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:641:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:641:39: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:641:39: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:643:41: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:643:41: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:643:41: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:643:41: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:643:41: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:643:41: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:643:41: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:643:41: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:643:41: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:643:41: sparse: cast from restricted __be16
fs/xfs/xfs_qm.c:643:41: sparse: cast to restricted __be32
fs/xfs/xfs_qm.c:643:41: sparse: cast from restricted __be16
vim +639 fs/xfs/xfs_qm.c
586
587 /* Initialize quota time limits from the root dquot. */
588 static void
589 xfs_qm_init_timelimits(
590 struct xfs_mount *mp,
591 struct xfs_quotainfo *qinf)
592 {
593 struct xfs_disk_dquot *ddqp;
594 struct xfs_dquot *dqp;
595 uint type;
596 int error;
597
598 qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
599 qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
600 qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
601 qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
602 qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
603 qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
604
605 /*
606 * We try to get the limits from the superuser's limits fields.
607 * This is quite hacky, but it is standard quota practice.
608 *
609 * Since we may not have done a quotacheck by this point, just read
610 * the dquot without attaching it to any hashtables or lists.
611 *
612 * Timers and warnings are globally set by the first timer found in
613 * user/group/proj quota types, otherwise a default value is used.
614 * This should be split into different fields per quota type.
615 */
616 if (XFS_IS_UQUOTA_RUNNING(mp))
617 type = XFS_DQ_USER;
618 else if (XFS_IS_GQUOTA_RUNNING(mp))
619 type = XFS_DQ_GROUP;
620 else
621 type = XFS_DQ_PROJ;
622 error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
623 if (error)
624 return;
625
626 ddqp = &dqp->q_core;
627 /*
628 * The warnings and timers set the grace period given to
629 * a user or group before he or she can not perform any
630 * more writing. If it is zero, a default is used.
631 */
632 if (ddqp->d_btimer)
633 qinf->qi_btimelimit = be32_to_cpu(ddqp->d_btimer);
634 if (ddqp->d_itimer)
635 qinf->qi_itimelimit = be32_to_cpu(ddqp->d_itimer);
636 if (ddqp->d_rtbtimer)
637 qinf->qi_rtbtimelimit = be32_to_cpu(ddqp->d_rtbtimer);
638 if (ddqp->d_bwarns)
> 639 qinf->qi_bwarnlimit = be32_to_cpu(ddqp->d_bwarns);
640 if (ddqp->d_iwarns)
641 qinf->qi_iwarnlimit = be32_to_cpu(ddqp->d_iwarns);
642 if (ddqp->d_rtbwarns)
643 qinf->qi_rtbwarnlimit = be32_to_cpu(ddqp->d_rtbwarns);
644
645 xfs_qm_dqdestroy(dqp);
646 }
647
---
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