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authorJ. Bruce Fields <bfields@citi.umich.edu>2010-06-15 14:22:37 -0400
committerJ. Bruce Fields <bfields@redhat.com>2011-01-11 15:04:09 -0500
commit4c6493785a1ea9c3b3522f199760a90a30e1626c (patch)
tree30dd59c79e81cb59e77d7f270df755f061a0b8d5 /fs/nfsd
parentec26fba40fa92c7cc5c61d40746f499dcefc67be (diff)
downloadlinux-4c6493785a1ea9c3b3522f199760a90a30e1626c.tar.bz2
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>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b583e4e800ab..3cf9900d5f32 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -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