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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-03-08 16:39:46 +0530
committerEric Van Hensbergen <ericvh@gmail.com>2011-03-22 15:43:35 -0500
commit5a7e0a8cf50cf905403f5a498e86d1f97cfcf51b (patch)
tree3f20f98db76f7a221f397630a03e6089c1208510 /fs/9p/v9fs.h
parentf741a79e982cf56d7584435bad663553ffe6715f (diff)
downloadvexpress-lsk-5a7e0a8cf50cf905403f5a498e86d1f97cfcf51b.tar.gz
fs/9p: Fix race in initializing writeback fid
When two process open the same file we can end up with both of them allocating the writeback_fid. Add a new mutex which can be used for synchronizing v9fs_inode member values. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs/9p/v9fs.h')
-rw-r--r--fs/9p/v9fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index bd8496db135..89657e86516 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -130,6 +130,7 @@ struct v9fs_inode {
#endif
unsigned int cache_validity;
struct p9_fid *writeback_fid;
+ struct mutex v_mutex;
struct inode vfs_inode;
};