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rpc_pipe: fix cleanup of dummy gssd directory when notification fails 

Currently, it could leak dentry references in some cases. Make sure
we clean up properly.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Jeff Layton 2013-12-09 09:38:00 -05:00 committed by Trond Myklebust
parent e2f0c83a9d
commit 23e66ba971
1 changed files with 13 additions and 1 deletions
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14
net/sunrpc/rpc_pipe.c
View File

@ -1369,6 +1369,18 @@ out:
return pipe_dentry;
}
static void
rpc_gssd_dummy_depopulate(struct dentry *pipe_dentry)
{
struct dentry *clnt_dir = pipe_dentry->d_parent;
struct dentry *gssd_dir = clnt_dir->d_parent;
__rpc_rmpipe(clnt_dir->d_inode, pipe_dentry);
__rpc_depopulate(clnt_dir, gssd_dummy_info_file, 0, 1);
__rpc_depopulate(gssd_dir, gssd_dummy_clnt_dir, 0, 1);
dput(pipe_dentry);
}
static int
rpc_fill_super(struct super_block *sb, void *data, int silent)
{
@ -1412,7 +1424,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
return 0;
err_depopulate:
dput(gssd_dentry);
rpc_gssd_dummy_depopulate(gssd_dentry);
blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
RPC_PIPEFS_UMOUNT,
sb);