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zfs: use vn_seqc_read_notmodify for racing .. lookups

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Catching an in-flight unlocked vnode is fine here.

Reported by;	pho
This commit is contained in:
Mateusz Guzik 2021-04-22 13:18:39 +00:00
parent fc620f9782
commit 7ea3223c78
1 changed files with 1 additions and 1 deletions
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2
sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
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@ -807,7 +807,7 @@ zfs_lookup(vnode_t *dvp, const char *nm, vnode_t **vpp,
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zdp);
dvp_seqc = vn_seqc_read_any(dvp);
dvp_seqc = vn_seqc_read_notmodify(dvp);
*vpp = NULL;