On Tue, 2003-05-20 at 01:46, Alex Tomas wrote:
> please, look:
>
> thread A commit thread
>
> if (jh->b_committed_data) {
> kfree(jh->b_committed_data);
> jh->b_committed_data = NULL;
> }
> access for
> b_committed_data == NULL ?
Not with BKL. Without it, yes, that's definitely a risk, and you need
some locking for the access to b_committed_data. Without that, even if
you keep the jh->b_committed_data field valid, you risk freeing the old
copy that another thread is using.
Cheers,
Stephen
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