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authorBenny Halevy <bhalevy@panasas.com>2010-05-12 00:14:06 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2010-05-13 11:59:11 -0400
commitab707e156593ff7fffd615757332dbff6616836a (patch)
treea9d1c7d851ca178e616f05aab30377ab778762b4 /fs/nfsd/nfs4state.c
parentd76829889ac4250a18cfcc1a606bb256bb9c570c (diff)
downloadlwn-ab707e156593ff7fffd615757332dbff6616836a.tar.gz
lwn-ab707e156593ff7fffd615757332dbff6616836a.zip
nfsd4: nfsd4_destroy_session must set callback client under the state lock
nfsd4_set_callback_client must be called under the state lock to atomically set or unset the callback client and shutting down the previous one. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd/nfs4state.c')
-rw-r--r--fs/nfsd/nfs4state.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index cc0e9117dd16..ede9dde52fe8 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1427,8 +1427,10 @@ nfsd4_destroy_session(struct svc_rqst *r,
unhash_session(ses);
spin_unlock(&client_lock);
+ nfs4_lock_state();
/* wait for callbacks */
nfsd4_set_callback_client(ses->se_client, NULL);
+ nfs4_unlock_state();
nfsd4_put_session(ses);
status = nfs_ok;
out: