From: David Vrabel <david.vrabel@citrix.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
Jerome Marchand <jmarchan@redhat.com>,
<linux-kernel@vger.kernel.org>,
Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: zram: zsmalloc calls sleeping function from atomic context
Date: Tue, 18 Mar 2014 12:05:05 +0000 [thread overview]
Message-ID: <53283671.1030509@citrix.com> (raw)
In-Reply-To: <20140317160117.9bfbfdd5128d45a80f58070c@linux-foundation.org>
On 17/03/14 23:01, Andrew Morton wrote:
>
> OK, thanks. David, there's our atomic unmap and there are probably
> others. Converting a previously-atomic utility function into one which
> can sleep is going to be difficult.
I think we should drop these patches. I think Fujitsu were doing
something particularly odd with an out-of-tree driver.
> Or can this code which vmaps 50GB be changed to unmap it in 16MB chunks
> via unmap_kernel_range(), with a cond_resched() in the loop?
This sounds like something the people from Fujitsu can explore.
David
next prev parent reply other threads:[~2014-03-18 12:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-17 14:43 zram: zsmalloc calls sleeping function from atomic context Sergey Senozhatsky
2014-03-17 23:01 ` Andrew Morton
2014-03-18 12:05 ` David Vrabel [this message]
2014-03-18 12:52 ` Peter Zijlstra
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