From: Herbert Xu <herbert@gondor.apana.org.au>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: David Miller <davem@davemloft.net>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org, j@w1.fi,
tgraf@suug.ch
Subject: Re: [PATCH 2/4] mac80211: Free mpath object when rhashtable insertion fails
Date: Thu, 14 Feb 2019 17:41:18 +0800 [thread overview]
Message-ID: <20190214094118.msvodyzvcekhxsje@gondor.apana.org.au> (raw)
In-Reply-To: <36adaef5c982ba10444d6f837b0d5c55ac953bdf.camel@sipsolutions.net>
On Wed, Feb 13, 2019 at 04:04:29PM +0100, Johannes Berg wrote:
> On Wed, 2019-02-13 at 22:39 +0800, Herbert Xu wrote:
> > + if (ret != -EEXIST)
> > return ERR_PTR(ret);
>
> Surely that should still be "if (ret && ret != -EEXIST)" otherwise you
> return for the success case too? or "else if"?
>
> I'd probably say we should combine all those ifs into something like this?
>
>
> if (ret == 0) {
> sdata->u.mesh.mesh_paths_generation++;
> return new_mpath;
> } else if (ret == -EEXIST) {
> kfree(new_mpath);
> return mpath;
> } else {
> kfree(new_mpath);
> return NULL;
> }
>
>
> Yes, that's a small change in behaviour as to when the generation
> counter is updated, but I'm pretty sure it really only needs updating
> when we inserted something, not if we found an old mpath.
You are right. Let me fix this and repost.
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
next prev parent reply other threads:[~2019-02-14 9:41 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-13 5:05 [PATCH 0/2] mac80211: Fix incorrect usage of rhashtable walk API Herbert Xu
2019-02-13 5:16 ` [PATCH 1/2] mac80211: Use linked list instead of rhashtable walk for mesh tables Herbert Xu
2019-02-13 13:47 ` Herbert Xu
2019-02-13 5:16 ` [PATCH 2/2] mac80211: Free mpath object when rhashtable insertion fails Herbert Xu
2019-02-14 5:52 ` Dan Carpenter
2019-02-13 5:25 ` [PATCH] mac80211: Use rhashtable_lookup_get_insert_fast instead of racy code Herbert Xu
2019-02-13 5:34 ` [PATCH] rhashtable: Remove obsolete rhashtable_walk_init function Herbert Xu
[not found] ` <201902131934.29Pw8ywP%fengguang.wu@intel.com>
2019-02-13 13:41 ` Herbert Xu
2019-02-13 14:38 ` [v2 PATCH 0/4] mac80211: Fix incorrect usage of rhashtable walk API Herbert Xu
2019-02-13 14:39 ` [PATCH 1/4] mac80211: Use linked list instead of rhashtable walk for mesh tables Herbert Xu
2019-02-13 14:39 ` [PATCH 2/4] mac80211: Free mpath object when rhashtable insertion fails Herbert Xu
2019-02-13 15:04 ` Johannes Berg
2019-02-14 9:41 ` Herbert Xu [this message]
2019-02-14 14:04 ` Herbert Xu
2019-02-13 14:39 ` [PATCH 3/4] mac80211: Use rhashtable_lookup_get_insert_fast instead of racy code Herbert Xu
2019-02-13 14:39 ` [PATCH 4/4] rhashtable: Remove obsolete rhashtable_walk_init function Herbert Xu
2019-02-13 14:55 ` [v2 PATCH 0/4] mac80211: Fix incorrect usage of rhashtable walk API Johannes Berg
2019-02-14 14:02 ` [v3 " Herbert Xu
2019-02-14 14:03 ` [PATCH 1/4] mac80211: Use linked list instead of rhashtable walk for mesh tables Herbert Xu
2019-02-14 14:03 ` [PATCH 2/4] mac80211: Free mpath object when rhashtable insertion fails Herbert Xu
2019-02-14 14:03 ` [PATCH 3/4] mac80211: Use rhashtable_lookup_get_insert_fast instead of racy code Herbert Xu
2019-02-14 14:03 ` [PATCH 4/4] rhashtable: Remove obsolete rhashtable_walk_init function Herbert Xu
2019-02-15 12:21 ` [v3 PATCH 0/4] mac80211: Fix incorrect usage of rhashtable walk API Johannes Berg
2019-02-18 10:25 ` Herbert Xu
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