Hi Kent,
On Wed, Nov 28, 2012 at 08:43:36AM -0800, Kent Overstreet wrote:
> + * now it's safe to cancel any that need to be.
> + */
> +static void free_ioctx(struct kioctx *ctx)
...
> + aio_nr -= ctx->max_reqs;
> + spin_unlock(&aio_nr_lock);
> +
> + synchronize_rcu();
> +
> + pr_debug("freeing %p\n", ctx);
> + kmem_cache_free(kioctx_cachep, ctx);
> +}
As mentioned on irc, we probably want to avoid the synchronize_rcu()
overhead, since delays here will impact the time it takes for a task to
exit. Cheers,
-ben
--
"Thought is the essence of where you are now."
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