On Wed, Jul 03, 2013 at 04:25:32PM -0400, Waiman Long wrote:
> There is no change in logic and everything should just work.
> - spin_lock(&file->f_path.dentry->d_lock);
> + d_lock(file->f_path.dentry);
> if (!d_unhashed(file->f_path.dentry))
> clnt = RPC_I(inode)->private;
> if (clnt != NULL && atomic_inc_not_zero(&clnt->cl_count)) {
> - spin_unlock(&file->f_path.dentry->d_lock);
> + d_unlock(file->f_path.dentry);
Could somebody explain WTF is being protected here? It's not ->private -
that gets set (and, more importantly, cleared) without ->d_lock in sight.
Trond, that seems to be your code from about three years ago (introduced
in "SUNRPC: Fix a race in rpc_info_open"). What's going on there?
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