| From | Luis Henriques <> | Subject | [PATCH 3.11 229/272] NFSv4: Fix state reference counting in _nfs4_opendata_reclaim_to_nfs4_state | Date | Fri, 6 Dec 2013 12:58:38 +0000 |
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3.11.10.1 -stable review patch. If anyone has any objections, please let me know.
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From: Trond Myklebust <Trond.Myklebust@netapp.com>
commit d49f042aeec99c5f87160bb52dd52088b1051311 upstream.
Currently, if the call to nfs_refresh_inode fails, then we end up leaking a reference count, due to the call to nfs4_get_open_state. While we're at it, replace nfs4_get_open_state with a simple call to atomic_inc(); there is no need to do a full lookup of the struct nfs_state since it is passed as an argument in the struct nfs4_opendata, and is already assigned to the variable 'state'.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- fs/nfs/nfs4proc.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 84c6225..9960a5b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1236,11 +1236,6 @@ _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) goto err; } - ret = -ENOMEM; - state = nfs4_get_open_state(inode, data->owner); - if (state == NULL) - goto err; - ret = nfs_refresh_inode(inode, &data->f_attr); if (ret) goto err; @@ -1251,6 +1246,7 @@ _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) nfs4_opendata_check_deleg(data, state); update_open_stateid(state, &data->o_res.stateid, NULL, data->o_arg.fmode); + atomic_inc(&state->count); return state; err: -- 1.8.3.2
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