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Date: Mon, 24 Jan 2022 15:54:23 +0800
From: kernel test robot <lkp@...el.com>
To: Allison Henderson <allison.henderson@...cle.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Mark Tinguely <tinguely@....com>,
Dave Chinner <dchinner@...hat.com>
Subject: [allisonhenderson-xfs-work:delayed_attrs_v26_extended 17/30]
fs/xfs/libxfs/xfs_attr.c:666:72: warning: bitwise comparison always
evaluates to true
tree: https://github.com/allisonhenderson/xfs_work.git delayed_attrs_v26_extended
head: 19459f5cfa422b0a6a9cd3898892e43ecb49f8f3
commit: 721a69ffe0e2561371de01822bef355354eee926 [17/30] xfs: add parent pointer support to attribute code
config: nds32-randconfig-r024-20220124 (https://download.01.org/0day-ci/archive/20220124/202201241531.xVqSa0gQ-lkp@intel.com/config)
compiler: nds32le-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/allisonhenderson/xfs_work/commit/721a69ffe0e2561371de01822bef355354eee926
git remote add allisonhenderson-xfs-work https://github.com/allisonhenderson/xfs_work.git
git fetch --no-tags allisonhenderson-xfs-work delayed_attrs_v26_extended
git checkout 721a69ffe0e2561371de01822bef355354eee926
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nds32 SHELL=/bin/bash fs/xfs/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
fs/xfs/libxfs/xfs_attr.c: In function 'xfs_attr_set':
>> fs/xfs/libxfs/xfs_attr.c:666:72: warning: bitwise comparison always evaluates to true [-Wtautological-compare]
666 | rsvd = ((args->attr_filter & XFS_ATTR_ROOT) | XFS_ATTR_PARENT) != 0;
| ^~
vim +666 fs/xfs/libxfs/xfs_attr.c
648
649 /*
650 * Note: If args->value is NULL the attribute will be removed, just like the
651 * Linux ->setattr API.
652 */
653 int
654 xfs_attr_set(
655 struct xfs_da_args *args)
656 {
657 struct xfs_inode *dp = args->dp;
658 struct xfs_mount *mp = dp->i_mount;
659 struct xfs_trans_res tres;
660 bool rsvd;
661 int error, local;
662 int rmt_blks = 0;
663 unsigned int total;
664 int delayed = xfs_has_larp(mp);
665
> 666 rsvd = ((args->attr_filter & XFS_ATTR_ROOT) | XFS_ATTR_PARENT) != 0;
667
668 if (xfs_is_shutdown(dp->i_mount))
669 return -EIO;
670
671 error = xfs_qm_dqattach(dp);
672 if (error)
673 return error;
674
675 args->geo = mp->m_attr_geo;
676 args->whichfork = XFS_ATTR_FORK;
677 args->hashval = xfs_da_hashname(args->name, args->namelen);
678
679 /*
680 * We have no control over the attribute names that userspace passes us
681 * to remove, so we have to allow the name lookup prior to attribute
682 * removal to fail as well.
683 */
684 args->op_flags = XFS_DA_OP_OKNOENT;
685
686 if (args->value) {
687 XFS_STATS_INC(mp, xs_attr_set);
688
689 args->op_flags |= XFS_DA_OP_ADDNAME;
690 args->total = xfs_attr_calc_size(args, &local);
691
692 /*
693 * If the inode doesn't have an attribute fork, add one.
694 * (inode must not be locked when we call this routine)
695 */
696 if (XFS_IFORK_Q(dp) == 0) {
697 int sf_size = sizeof(struct xfs_attr_sf_hdr) +
698 xfs_attr_sf_entsize_byname(args->namelen,
699 args->valuelen);
700
701 error = xfs_bmap_add_attrfork(dp, sf_size, rsvd);
702 if (error)
703 return error;
704 }
705
706 tres.tr_logres = M_RES(mp)->tr_attrsetm.tr_logres +
707 M_RES(mp)->tr_attrsetrt.tr_logres *
708 args->total;
709 tres.tr_logcount = XFS_ATTRSET_LOG_COUNT;
710 tres.tr_logflags = XFS_TRANS_PERM_LOG_RES;
711 total = args->total;
712
713 if (!local)
714 rmt_blks = xfs_attr3_rmt_blocks(mp, args->valuelen);
715 } else {
716 XFS_STATS_INC(mp, xs_attr_remove);
717
718 tres = M_RES(mp)->tr_attrrm;
719 total = XFS_ATTRRM_SPACE_RES(mp);
720 rmt_blks = xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX);
721 }
722
723 if (delayed) {
724 error = xfs_attr_use_log_assist(mp);
725 if (error)
726 return error;
727 }
728
729 /*
730 * Root fork attributes can use reserved data blocks for this
731 * operation if necessary
732 */
733 error = xfs_trans_alloc_inode(dp, &tres, total, 0, rsvd, &args->trans);
734 if (error)
735 goto drop_incompat;
736
737 if (args->value || xfs_inode_hasattr(dp)) {
738 error = xfs_iext_count_may_overflow(dp, XFS_ATTR_FORK,
739 XFS_IEXT_ATTR_MANIP_CNT(rmt_blks));
740 if (error)
741 goto out_trans_cancel;
742 }
743
744 error = xfs_attr_lookup(args);
745 if (args->value) {
746 if (error == -EEXIST && (args->attr_flags & XATTR_CREATE))
747 goto out_trans_cancel;
748 if (error == -ENOATTR && (args->attr_flags & XATTR_REPLACE))
749 goto out_trans_cancel;
750 if (error != -ENOATTR && error != -EEXIST)
751 goto out_trans_cancel;
752
753 error = xfs_attr_set_deferred(args);
754 if (error)
755 goto out_trans_cancel;
756
757 /* shortform attribute has already been committed */
758 if (!args->trans)
759 goto out_unlock;
760 } else {
761 if (error != -EEXIST)
762 goto out_trans_cancel;
763
764 error = xfs_attr_remove_deferred(args);
765 if (error)
766 goto out_trans_cancel;
767 }
768
769 /*
770 * If this is a synchronous mount, make sure that the
771 * transaction goes to disk before returning to the user.
772 */
773 if (xfs_has_wsync(mp))
774 xfs_trans_set_sync(args->trans);
775
776 if (!(args->op_flags & XFS_DA_OP_NOTIME))
777 xfs_trans_ichgtime(args->trans, dp, XFS_ICHGTIME_CHG);
778
779 /*
780 * Commit the last in the sequence of transactions.
781 */
782 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
783 error = xfs_trans_commit(args->trans);
784 out_unlock:
785 xfs_iunlock(dp, XFS_ILOCK_EXCL);
786 drop_incompat:
787 if (delayed)
788 xlog_drop_incompat_feat(mp->m_log);
789 return error;
790
791 out_trans_cancel:
792 if (args->trans)
793 xfs_trans_cancel(args->trans);
794 goto out_unlock;
795 }
796
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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