From 4dfc7fdb9e261d77818616782ae1841a80e0fc83 Mon Sep 17 00:00:00 2001 From: Kinglong Mee Date: Tue, 15 Apr 2014 17:22:59 +0800 Subject: [PATCH] NFS: Fix memroy leak for double mounts When double mounting same nfs filesystem, the devname saved in d_fsdata will be lost.The second mount should not change the devname that be saved in d_fsdata. Signed-off-by: Kinglong Mee Signed-off-by: Trond Myklebust --- fs/nfs/getroot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index 66984a9aafaa..b94f80420a58 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -120,7 +120,8 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh, security_d_instantiate(ret, inode); spin_lock(&ret->d_lock); - if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) { + if (IS_ROOT(ret) && !ret->d_fsdata && + !(ret->d_flags & DCACHE_NFSFS_RENAMED)) { ret->d_fsdata = name; name = NULL; } -- 2.20.1