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NFSv4: Update the stateid seqid in nfs_revoke_delegation()

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If we revoke a delegation, but the stateid's seqid is newer, then
ensure we update the seqid when marking the delegation as revoked.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2019-10-21 14:15:32 -04:00
parent ae084a32ee
commit f2d47b5502
1 changed files with 13 additions and 2 deletions
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15
fs/nfs/delegation.c
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@ -771,8 +771,19 @@ static bool nfs_revoke_delegation(struct inode *inode,
if (stateid == NULL) {
nfs4_stateid_copy(&tmp, &delegation->stateid);
stateid = &tmp;
} else if (!nfs4_stateid_match(stateid, &delegation->stateid))
goto out;
} else {
if (!nfs4_stateid_match_other(stateid, &delegation->stateid))
goto out;
spin_lock(&delegation->lock);
if (stateid->seqid) {
if (nfs4_stateid_is_newer(&delegation->stateid, stateid)) {
spin_unlock(&delegation->lock);
goto out;
}
delegation->stateid.seqid = stateid->seqid;
}
spin_unlock(&delegation->lock);
}
nfs_mark_delegation_revoked(NFS_SERVER(inode), delegation);
ret = true;
out: