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authorChristoph Hellwig <hch@lst.de>2014-09-26 16:02:50 +0200
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-11-12 14:22:52 -0500
commite0d4ed71ca0344494722a041780f004d2bcf0f11 (patch)
treece776cb83bd3cefa8ace5bb529d1ec0480079022 /fs/nfs/netns.h
parent8c393f9a721c30a030049a680e1bf896669bb279 (diff)
downloadlinux-e0d4ed71ca0344494722a041780f004d2bcf0f11.tar.bz2
pnfs/blocklayout: serialize GETDEVICEINFO calls
The rpc_pipefs code isn't thread safe, leading to occasional use after frees when running xfstests generic/241 (dbench). Signed-off-by: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/1411740170-18611-2-git-send-email-hch@lst.de Cc: stable@vger.kernel.org # 3.17.x Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/netns.h')
-rw-r--r--fs/nfs/netns.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h
index ef221fb8a183..f0e06e4acbef 100644
--- a/fs/nfs/netns.h
+++ b/fs/nfs/netns.h
@@ -19,6 +19,7 @@ struct nfs_net {
struct rpc_pipe *bl_device_pipe;
struct bl_dev_msg bl_mount_reply;
wait_queue_head_t bl_wq;
+ struct mutex bl_mutex;
struct list_head nfs_client_list;
struct list_head nfs_volume_list;
#if IS_ENABLED(CONFIG_NFS_V4)