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Date: Fri, 6 May 2022 10:25:47 +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:xfs-5.19-compose_pptrs 21/32]
fs/xfs/libxfs/xfs_attr.c:816:72: warning: bitwise comparison always
evaluates to true
tree: https://github.com/allisonhenderson/xfs_work.git xfs-5.19-compose_pptrs
head: 74ecccf0e89a132c2490f3a63661c535974c6a08
commit: a349b6b3c1b6c2c4bfb53996c7bbe69bf59acf00 [21/32] xfs: add parent pointer support to attribute code
config: arc-randconfig-r001-20220505 (https://download.01.org/0day-ci/archive/20220506/202205061021.aUxzs7xm-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 11.3.0
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/a349b6b3c1b6c2c4bfb53996c7bbe69bf59acf00
git remote add allisonhenderson-xfs-work https://github.com/allisonhenderson/xfs_work.git
git fetch --no-tags allisonhenderson-xfs-work xfs-5.19-compose_pptrs
git checkout a349b6b3c1b6c2c4bfb53996c7bbe69bf59acf00
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc 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:816:72: warning: bitwise comparison always evaluates to true [-Wtautological-compare]
816 | rsvd = ((args->attr_filter & XFS_ATTR_ROOT) | XFS_ATTR_PARENT) != 0;
| ^~
At top level:
fs/xfs/libxfs/xfs_attr.c:1469:1: warning: 'xfs_attr_refillstate' defined but not used [-Wunused-function]
1469 | xfs_attr_refillstate(xfs_da_state_t *state)
| ^~~~~~~~~~~~~~~~~~~~
vim +816 fs/xfs/libxfs/xfs_attr.c
798
799 /*
800 * Note: If args->value is NULL the attribute will be removed, just like the
801 * Linux ->setattr API.
802 */
803 int
804 xfs_attr_set(
805 struct xfs_da_args *args)
806 {
807 struct xfs_inode *dp = args->dp;
808 struct xfs_mount *mp = dp->i_mount;
809 struct xfs_trans_res tres;
810 bool rsvd;
811 int error, local;
812 int rmt_blks = 0;
813 unsigned int total;
814 int delayed = xfs_has_larp(mp);
815
> 816 rsvd = ((args->attr_filter & XFS_ATTR_ROOT) | XFS_ATTR_PARENT) != 0;
817
818 if (xfs_is_shutdown(dp->i_mount))
819 return -EIO;
820
821 error = xfs_qm_dqattach(dp);
822 if (error)
823 return error;
824
825 args->geo = mp->m_attr_geo;
826 args->whichfork = XFS_ATTR_FORK;
827 args->hashval = xfs_da_hashname(args->name, args->namelen);
828
829 /*
830 * We have no control over the attribute names that userspace passes us
831 * to remove, so we have to allow the name lookup prior to attribute
832 * removal to fail as well.
833 */
834 args->op_flags = XFS_DA_OP_OKNOENT;
835
836 if (args->value) {
837 XFS_STATS_INC(mp, xs_attr_set);
838
839 args->op_flags |= XFS_DA_OP_ADDNAME;
840 args->total = xfs_attr_calc_size(args, &local);
841
842 /*
843 * If the inode doesn't have an attribute fork, add one.
844 * (inode must not be locked when we call this routine)
845 */
846 if (XFS_IFORK_Q(dp) == 0) {
847 int sf_size = sizeof(struct xfs_attr_sf_hdr) +
848 xfs_attr_sf_entsize_byname(args->namelen,
849 args->valuelen);
850
851 error = xfs_bmap_add_attrfork(dp, sf_size, rsvd);
852 if (error)
853 return error;
854 }
855
856 if (!local)
857 rmt_blks = xfs_attr3_rmt_blocks(mp, args->valuelen);
858 } else {
859 XFS_STATS_INC(mp, xs_attr_remove);
860 rmt_blks = xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX);
861 }
862
863 if (delayed) {
864 error = xfs_attr_use_log_assist(mp);
865 if (error)
866 return error;
867 }
868
869 /*
870 * Root fork attributes can use reserved data blocks for this
871 * operation if necessary
872 */
873 xfs_init_attr_trans(args, &tres, &total);
874 error = xfs_trans_alloc_inode(dp, &tres, total, 0, rsvd, &args->trans);
875 if (error)
876 goto drop_incompat;
877
878 if (args->value || xfs_inode_hasattr(dp)) {
879 error = xfs_iext_count_may_overflow(dp, XFS_ATTR_FORK,
880 XFS_IEXT_ATTR_MANIP_CNT(rmt_blks));
881 if (error == -EFBIG)
882 error = xfs_iext_count_upgrade(args->trans, dp,
883 XFS_IEXT_ATTR_MANIP_CNT(rmt_blks));
884 if (error)
885 goto out_trans_cancel;
886 }
887
888 error = xfs_attr_lookup(args);
889 switch (error) {
890 case -EEXIST:
891 /* if no value, we are performing a remove operation */
892 if (!args->value) {
893 error = xfs_attr_defer_remove(args);
894 break;
895 }
896 /* Pure create fails if the attr already exists */
897 if (args->attr_flags & XATTR_CREATE)
898 goto out_trans_cancel;
899
900 error = xfs_attr_defer_replace(args);
901 break;
902 case -ENOATTR:
903 /* Can't remove what isn't there. */
904 if (!args->value)
905 goto out_trans_cancel;
906
907 /* Pure replace fails if no existing attr to replace. */
908 if (args->attr_flags & XATTR_REPLACE)
909 goto out_trans_cancel;
910
911 error = xfs_attr_defer_add(args);
912 break;
913 default:
914 goto out_trans_cancel;
915 }
916 if (error)
917 goto out_trans_cancel;
918
919 /*
920 * If this is a synchronous mount, make sure that the
921 * transaction goes to disk before returning to the user.
922 */
923 if (xfs_has_wsync(mp))
924 xfs_trans_set_sync(args->trans);
925
926 if (!(args->op_flags & XFS_DA_OP_NOTIME))
927 xfs_trans_ichgtime(args->trans, dp, XFS_ICHGTIME_CHG);
928
929 /*
930 * Commit the last in the sequence of transactions.
931 */
932 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
933 error = xfs_trans_commit(args->trans);
934 out_unlock:
935 xfs_iunlock(dp, XFS_ILOCK_EXCL);
936 drop_incompat:
937 if (delayed)
938 xlog_drop_incompat_feat(mp->m_log);
939 return error;
940
941 out_trans_cancel:
942 if (args->trans)
943 xfs_trans_cancel(args->trans);
944 goto out_unlock;
945 }
946
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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