From: Dmitry Yusupov <dmitry_yus@yahoo.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Mike Christie <michaelc@cs.wisc.edu>,
netdev@oss.sgi.com, davem@davemloft.net
Subject: Re: [PATCH] NETLINK_UESTABLISHED notifier event
Date: Wed, 06 Apr 2005 14:37:21 -0700 [thread overview]
Message-ID: <1112823442.16753.68.camel@beastie> (raw)
In-Reply-To: <20050406212906.GA24775@gondor.apana.org.au>
On Thu, 2005-04-07 at 07:29 +1000, Herbert Xu wrote:
> On Wed, Apr 06, 2005 at 09:23:15AM -0700, Mike Christie wrote:
> >
> > It is due to where it is being used. open-iscsi uses netlink
> > sockets for communication in a block (scsi specificically)
> > driver that has pushed much of its code to usersapce. Forcing
> > open-iscsi to use GFP_KERNEL causes a couple of problems. The
> > worst would be where a GFP_KERNEL allocation causes a write,
> > and that write is to an iscsi disk that open-iscsi is managing.
> > The write could then hit the same code path and cause another
> > GFP_KERNEL allocation and we could loop like that until the
> > system locks up.
>
> In that case it's not enough to just use sk_allocation here.
> You'll need a way to actually set it to GFP_ATOMIC.
correct.
That's why in my patch I provided NETLINK_UESTABLISHED event. It is a
right way and time to set sk->sk_allocation to GFP_ATOMIC for newly
established netlink connection. imho.
next prev parent reply other threads:[~2005-04-06 21:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-05 19:54 [PATCH] NETLINK_UESTABLISHED notifier event Dmitry Yusupov
2005-04-05 21:39 ` Jean-Mickael Guerin
2005-04-05 23:53 ` Dmitry Yusupov
2005-04-06 0:13 ` Dmitry Yusupov
2005-04-06 2:45 ` Herbert Xu
2005-04-06 5:55 ` Dmitry Yusupov
2005-04-06 6:03 ` Herbert Xu
2005-04-06 15:16 ` Dmitry Yusupov
2005-04-06 16:23 ` Mike Christie
2005-04-06 21:29 ` Herbert Xu
2005-04-06 21:37 ` Dmitry Yusupov [this message]
2005-04-06 22:04 ` Herbert Xu
2005-04-06 22:26 ` Dmitry Yusupov
2005-04-07 11:30 ` jamal
2005-04-07 15:05 ` Dmitry Yusupov
2005-04-07 21:32 ` Herbert Xu
2005-04-07 23:36 ` Dmitry Yusupov
2005-04-08 11:36 ` Herbert Xu
2005-04-08 15:30 ` Dmitry Yusupov
2005-04-09 1:44 ` Herbert Xu
2005-04-09 16:02 ` Dmitry Yusupov
2005-04-09 19:36 ` Herbert Xu
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