On Thu, 8 Nov 2012, Andrew Morton wrote:
> Date: Thu, 8 Nov 2012 11:14:18 -0800
> From: Andrew Morton
> To: Lukas Czerner
> Cc: ax...@kernel.dk, dchin...@redhat.com, jmo...@redhat.com,
> linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v2] loop: Limit the number of r
On Thu, 8 Nov 2012, Jeff Moyer wrote:
> Date: Thu, 08 Nov 2012 16:53:01 -0500
> From: Jeff Moyer
> To: Lukas Czerner
> Cc: ax...@kernel.dk, dchin...@redhat.com, linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v2] loop: Limit the number of requests in the bio list
>
>
On Fri, 9 Nov 2012, Jens Axboe wrote:
> Date: Fri, 09 Nov 2012 08:34:03 +0100
> From: Jens Axboe
> To: Andrew Morton
> Cc: Lukas Czerner , dchin...@redhat.com,
> jmo...@redhat.com, linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v2] loop: Limit the number of reques
On 2012-11-08 20:14, Andrew Morton wrote:
> On Tue, 16 Oct 2012 11:21:45 +0200
> Lukas Czerner wrote:
>
>> Currently there is not limitation of number of requests in the loop bio
>> list. This can lead into some nasty situations when the caller spawns
>> tons of bio requests taking huge amount of
Lukas Czerner writes:
> + if (lo->lo_bio_count >= lo->lo_queue->nr_requests) {
> + unsigned int nr;
> + spin_unlock_irq(&lo->lo_lock);
> + nr = lo->lo_queue->nr_requests - (lo->lo_queue->nr_requests/8);
> + wait_event_interruptible(lo->lo_req_wa
Andrew Morton writes:
> On Tue, 16 Oct 2012 11:21:45 +0200
> Lukas Czerner wrote:
>
>> Currently there is not limitation of number of requests in the loop bio
>> list. This can lead into some nasty situations when the caller spawns
>> tons of bio requests taking huge amount of memory. This is ev
On Tue, 16 Oct 2012 11:21:45 +0200
Lukas Czerner wrote:
> Currently there is not limitation of number of requests in the loop bio
> list. This can lead into some nasty situations when the caller spawns
> tons of bio requests taking huge amount of memory. This is even more
> obvious with discard w
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