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nfsd4: modify session list under cl_lock 

We want to traverse this from the callback code.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
J. Bruce Fields 2010-06-15 14:22:37 -04:00 committed by J. Bruce Fields
parent ec26fba40f
commit 4c6493785a
1 changed files with 6 additions and 0 deletions
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6
fs/nfsd/nfs4state.c
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@ -771,7 +771,9 @@ static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct n
idx = hash_sessionid(&new->se_sessionid);
spin_lock(&client_lock);
list_add(&new->se_hash, &sessionid_hashtbl[idx]);
spin_lock(&clp->cl_lock);
list_add(&new->se_perclnt, &clp->cl_sessions);
spin_unlock(&clp->cl_lock);
spin_unlock(&client_lock);
status = nfsd4_new_conn(rqstp, new);
@ -819,7 +821,9 @@ static void
unhash_session(struct nfsd4_session *ses)
{
list_del(&ses->se_hash);
spin_lock(&ses->se_client->cl_lock);
list_del(&ses->se_perclnt);
spin_unlock(&ses->se_client->cl_lock);
}
/* must be called under the client_lock */
@ -925,8 +929,10 @@ unhash_client_locked(struct nfs4_client *clp)
mark_client_expired(clp);
list_del(&clp->cl_lru);
spin_lock(&clp->cl_lock);
list_for_each_entry(ses, &clp->cl_sessions, se_perclnt)
list_del_init(&ses->se_hash);
spin_unlock(&clp->cl_lock);
}
static void