On 7/9/06, Evgeniy Polyakov [off-list ref] wrote:

+struct kevent *kevent_alloc(gfp_t mask)
+{
+       struct kevent *k;
+
+       if (kevent_cache)
+               k = kmem_cache_alloc(kevent_cache, mask);
+       else
+               k = kzalloc(sizeof(struct kevent), mask);
+
+       return k;
+}

What's this for? Why would kevent_cache be NULL? Note that you can use
kmem_cache_zalloc() for fixed size allocations that need to be zeroed.

On 7/9/06, Evgeniy Polyakov [off-list ref] wrote:

+
+void kevent_free(struct kevent *k)
+{
+       memset(k, 0xab, sizeof(struct kevent));

Why is slab poisoning not sufficient?

+       if (kevent_cache)
+               kmem_cache_free(kevent_cache, k);
+       else
+               kfree(k);
+}