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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-10-28 14:57:12 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-10-28 14:57:12 -0400 |
| commit | d49f042aeec99c5f87160bb52dd52088b1051311 (patch) | |
| tree | 7ec51c695820a1b15545cd99cf5827b54bf774eb /fs | |
| parent | a43ec98b72aae3e330f0673438f58316c3769b84 (diff) | |
| download | linux-d49f042aeec99c5f87160bb52dd52088b1051311.tar.bz2 | |
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 <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 6 |
1 files changed, 1 insertions, 5 deletions
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: |