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authorJ. Bruce Fields <bfields@redhat.com>2010-10-02 18:42:39 -0400
committerJ. Bruce Fields <bfields@redhat.com>2010-10-02 18:49:33 -0400
commit33515142156efc9ab5dbfe93ff8d4765559dc987 (patch)
tree64dc7ef93b822a703d5ffe32aeb8007550d1daa5 /fs/nfsd
parent328ead287220711c3ad4490b1f3f691855df4039 (diff)
downloadlinux-33515142156efc9ab5dbfe93ff8d4765559dc987.tar.bz2
nfsd4: return expired on unfound stateid's
Commit 78155ed75f470710f2aecb3e75e3d97107ba8374 "nfsd4: distinguish expired from stale stateids" attempted to distinguish expired and stale stateid's using time information that may not have been completely reliable, so I reverted it. That was throwing out the baby with the bathwater; we still do want to return expired, but let's do that using the simpler approach of just assuming any stateid is expired if it looks like it was given out by the current server instance, but we can't find it any more. This may help clients that are recovering from network partitions. Reported-by: Bian Naimeng <biannm@cn.fujitsu.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 596702e157c9..02c23b7c5cd5 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3046,7 +3046,11 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
if (STALE_STATEID(stateid))
goto out;
- status = nfserr_bad_stateid;
+ /*
+ * We assume that any stateid that has the current boot time,
+ * but that we can't find, is expired:
+ */
+ status = nfserr_expired;
if (is_delegation_stateid(stateid)) {
dp = find_delegation_stateid(ino, stateid);
if (!dp)
@@ -3066,6 +3070,7 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
stp = find_stateid(stateid, flags);
if (!stp)
goto out;
+ status = nfserr_bad_stateid;
if (nfs4_check_fh(current_fh, stp))
goto out;
if (!stp->st_stateowner->so_confirmed)
@@ -3140,8 +3145,9 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
* a replayed close:
*/
sop = search_close_lru(stateid->si_stateownerid, flags);
+ /* It's not stale; let's assume it's expired: */
if (sop == NULL)
- return nfserr_bad_stateid;
+ return nfserr_expired;
*sopp = sop;
goto check_replay;
}
@@ -3406,6 +3412,7 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_bad_stateid;
if (!is_delegation_stateid(stateid))
goto out;
+ status = nfserr_expired;
dp = find_delegation_stateid(inode, stateid);
if (!dp)
goto out;