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| author |   Kinglong Mee <kinglongmee@gmail.com> | 2014-04-15 17:22:59 +0800 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@primarydata.com> | 2014-04-15 10:29:25 -0400 |
| commit | 4dfc7fdb9e261d77818616782ae1841a80e0fc83 (patch) | |
| tree | f678be3838e7865e79adb45fc248ed6a97886b19 /fs/nfs/getroot.c | |
| parent | Linux 3.15-rc1 (diff) | |
| download | linux-dev-4dfc7fdb9e261d77818616782ae1841a80e0fc83.tar.xz linux-dev-4dfc7fdb9e261d77818616782ae1841a80e0fc83.zip | |
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 <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/getroot.c')
| -rw-r--r-- | fs/nfs/getroot.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; } |