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[PATCH] nfsd4: no replays on unconfirmed owners

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We shouldn't check for replays until after checking whether the open owner is
confirmed.  Clients are allowed to reuse openowners without bumping the seqid.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
J. Bruce Fields 2006-01-18 17:43:32 -08:00 committed by Linus Torvalds
parent a525825df1
commit ae8b625313
1 changed files with 11 additions and 13 deletions
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24
fs/nfsd/nfs4state.c
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@ -1465,8 +1465,16 @@ nfsd4_process_open1(struct nfsd4_open *open)
sop = find_openstateowner_str(strhashval, open);
if (sop) {
open->op_stateowner = sop;
/* check for replay */
if (open->op_seqid == sop->so_seqid - 1){
if (!sop->so_confirmed) {
/* Replace any unconfirmed stateowner without
* even checking for replays */
clp = sop->so_client;
release_stateowner(sop);
} else if (open->op_seqid == sop->so_seqid) {
/* normal case */
goto renew;
} else if (open->op_seqid == sop->so_seqid - 1) {
/* replay */
if (sop->so_replay.rp_buflen)
return NFSERR_REPLAY_ME;
else {
@ -1480,19 +1488,9 @@ nfsd4_process_open1(struct nfsd4_open *open)
" replay with no replay cache\n");
goto renew;
}
} else if (sop->so_confirmed) {
if (open->op_seqid == sop->so_seqid)
goto renew;
} else {
status = nfserr_bad_seqid;
goto out;
} else {
/* If we get here, we received an OPEN for an
* unconfirmed nfs4_stateowner. Since the seqid's are
* different, purge the existing nfs4_stateowner, and
* instantiate a new one.
*/
clp = sop->so_client;
release_stateowner(sop);
}
} else {
/* nfs4_stateowner not found.