Re: [PATCH 2/3] rhashtable-test: retry insert operations in threads

From: Thomas Graf
Date: Fri Aug 28 2015 - 18:43:14 EST

On 08/28/15 at 03:34pm, Phil Sutter wrote:
> Quite ugly, IMHO: rhashtable_insert_fast() may return -ENOMEM as
> non-permanent error, if allocation in GFP_ATOMIC failed. In this case,
> allocation in GFP_KERNEL is retried by rht_deferred_worker(). Sadly,
> there is no way to determine if that has already been tried and failed.
> The thread test triggers GFP_ATOMIC allocation failure quite easily, so
> I can't really just ignore this issue. :)

Return EBUSY or ENOBUFS in the non-permanent case? It is definitely
helpful if the API allows to differ between permanent and
non-permanent errors.
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