linux-kernel - Re: [RFC v3 1/7] hashtable: introduce a small and naive hashtable

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Message-ID: <5020754A.6090906@gmail.com>
Date:	Tue, 07 Aug 2012 03:54:18 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	Li Wei <lw@...fujitsu.com>
CC:	torvalds@...ux-foundation.org, tj@...nel.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, paul.gortmaker@...driver.com,
	davem@...emloft.net, rostedt@...dmis.org, mingo@...e.hu,
	ebiederm@...ssion.com, aarcange@...hat.com, ericvh@...il.com,
	netdev@...r.kernel.org, josh@...htriplett.org,
	eric.dumazet@...il.com, mathieu.desnoyers@...icios.com
Subject: Re: [RFC v3 1/7] hashtable: introduce a small and naive hashtable

On 08/07/2012 03:48 AM, Li Wei wrote:
> On 08/07/2012 08:45 AM, Sasha Levin wrote:
>> +/**
>> + * hash_for_each - iterate over a hashtable
>> + * @name: hashtable to iterate
>> + * @bits: bit count of hashing function of the hashtable
>> + * @bkt: integer to use as bucket loop cursor
>> + * @node: the &struct list_head to use as a loop cursor for each bucket
>> + * @obj: the type * to use as a loop cursor for each bucket
>> + * @member: the name of the hlist_node within the struct
>> + */
>> +#define hash_for_each(name, bits, bkt, node, obj, member)		\
>> +	for (bkt = 0; bkt < HASH_SIZE(bits); bkt++)			\
>> +		hlist_for_each_entry(obj, node, &name[i], member)
> 
> Where is the 'i' coming from? maybe &name[bkt]?

Heh, yeah. And the only place that uses this macro had 'i' declared as the loop counter, so it didn't trigger any issues during testing.

Thanks!

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