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From: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
To: shlomop-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org
Cc: mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
	ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
	roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	erezsh-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org
Subject: Re: [PATCH] IB/ipoib: break linkage to neighbouring system
Date: Thu, 12 Jul 2012 17:58:25 -0700 (PDT)	[thread overview]
Message-ID: <20120712.175825.1973614213454644336.davem@davemloft.net> (raw)
In-Reply-To: <36F7E4A28C18BE4DB7C86058E7B607241DC0E3A6-fViJhHBwANKuSA5JZHE7gA@public.gmane.org>

From: Shlomo Pongratz <shlomop-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Date: Thu, 12 Jul 2012 20:13:28 +0000

> The RCU and reference count protect the individual entries in the hash.
> The R/W lock protects the hash table itself. e.g. deleting the hash table itself, or in the future re-sizing it.

You don't need a R/W lock for that, we have RCU hash tables that get resized
dynamically and the lookup still only needs pure RCU protection.
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  parent reply	other threads:[~2012-07-13  0:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-10 10:01 [PATCH] IB/ipoib: break linkage to neighbouring system Or Gerlitz
     [not found] ` <1341914495-32730-1-git-send-email-ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2012-07-12 13:52   ` Or Gerlitz
2012-07-12 16:48   ` Marciniszyn, Mike
     [not found]     ` <32E1700B9017364D9B60AED9960492BC0D47265A-AtyAts71sc88Ug9VwtkbtrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2012-07-12 20:13       ` Shlomo Pongratz
     [not found]         ` <36F7E4A28C18BE4DB7C86058E7B607241DC0E3A6-fViJhHBwANKuSA5JZHE7gA@public.gmane.org>
2012-07-12 20:24           ` Marciniszyn, Mike
2012-07-13  0:58           ` David Miller [this message]
     [not found]             ` <20120712.175825.1973614213454644336.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2012-07-13 11:04               ` Or Gerlitz
2012-07-15 10:17               ` Or Gerlitz

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