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nfsd4: ignore WANT bits in open downgrade

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We don't use WANT bits yet--and sending them can probably trigger a
BUG() further down.

Cc: stable@kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2011-10-10 17:34:31 -04:00
parent dcbf8c3034
commit c30e92df30
1 changed files with 2 additions and 0 deletions
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fs/nfsd/nfs4state.c
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@ -3574,6 +3574,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
if (!access_valid(od->od_share_access, cstate->minorversion)
|| !deny_valid(od->od_share_deny))
return nfserr_inval;
/* We don't yet support WANT bits: */
od->od_share_access &= NFS4_SHARE_ACCESS_MASK;
nfs4_lock_state();
status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,