Re: [PATCH nf-next v4 01/13] rhashtable: add rhashtable_flush_and_free helper

[Herbert Xu <herbert@gondor.apana.org.au>]

Florian Westphal <fw@strlen.de> wrote:
> Will be used by upcoming ipset rhashtable conversion.
> 
> "walk rht with unlink+free" triggers LLM reject pattern:
> "possible softirq CPU stall".
> 
> "walk rht with unlink+free + cond_resched" triggers
> "possibly skipped elements".
> 
> Add a helper to detach current hash backend storage from the
> rhashtable, then iterate and flush all contained elements.
> 
> Cc: herbert@gondor.apana.org.au
> Cc: linux-crypto@vger.kernel.org
> Link: https://sashiko.dev/#/patchset/20260828152256.8759-1-fw%40strlen.de
> Assisted-by: Claude:claude-sonnet-5
> Signed-off-by: Florian Westphal <fw@strlen.de>
> ---
> Herbert: If you prefer to take this via the crypto tree, please
> let me know.
> Otherwise, an explicit Ack would be appreciated, so this can
> be handled via nf-next.  Thanks.
> 
> net/ipv6/ila/ could be converted to use this helper too.
> 
> include/linux/rhashtable.h |  19 ++++++
> lib/rhashtable.c           | 127 +++++++++++++++++++++++++++++++++++++
> 2 files changed, 146 insertions(+)

Sorry I wasn't paying attention.

So is the problem that there is no way to remove all elements for
a given key in an rhltable?

If that is what's needed then we should just add it for rhltable
since normal rhashtable's do not contain duplicate objects for a
given key.

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt