From: Trond Myklebust Date: Mon, 28 Oct 2013 18:57:12 +0000 (-0400) Subject: NFSv4: Fix state reference counting in _nfs4_opendata_reclaim_to_nfs4_state X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d49f042aeec99c5f87160bb52dd52088b1051311;p=linux-beck.git NFSv4: Fix state reference counting in _nfs4_opendata_reclaim_to_nfs4_state 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'. Cc: stable@vger.kernel.org # 3.7.x: a43ec98b72a: NFSv4: don't fail on missing Cc: stable@vger.kernel.org # 3.7.x Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e76fd218ec8e..d3c4255be6e0 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1323,11 +1323,6 @@ _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; @@ -1336,6 +1331,7 @@ _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: