* Steven Rostedt <[email protected]> wrote:
> > > +enum dentry_d_lock_type
> > > +{
> > > + DENTRY_D_LOCK_NORMAL,
> > > + DENTRY_D_LOCK_NESTED
> > > +};
> > > +
> > > struct dentry_operations {
> > > int (*d_revalidate)(struct dentry *, struct nameidata *);
> > > int (*d_hash) (struct dentry *, struct qstr *);
> >
> > DENTRY_D_LOCK_NORMAL isn't used anywhere.
>
> I guess it is implied with the normal spin_lock. Since
> spin_lock(&target->d_lock) and
> spin_lock_nested(&target->d_lock, DENTRY_D_LOCK_NORMAL)
> are equivalent. (DENTRY_D_LOCK_NORMAL == 0)
correct. This is the case for all the subtype enum definitions: 0 means
normal spinlock [rwlock, rwsem, mutex] API use.
Ingo
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