> From: Minchan Kim [mailto:minc...@kernel.org]
> Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> zram in-memory)
>
> Hi Seth,
>
> On Tue, Apr 09, 2013 at 03:52:36PM -0500, Seth Jennings wrote:
> > On 04/08/2013 08:36 PM, Minchan Kim
> From: Minchan Kim [mailto:minc...@kernel.org]
> Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> zram in-memory)
>
> On Tue, Apr 09, 2013 at 01:37:47PM -0700, Dan Magenheimer wrote:
> > > From: Minchan Kim [mailto:minc...@kernel.org]
>
> From: Minchan Kim [mailto:minc...@kernel.org]
> Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> zram in-memory)
>
> On Tue, Apr 09, 2013 at 01:25:45PM -0700, Dan Magenheimer wrote:
> > > From: Minchan Kim [mailto:minc...@kernel.org]
>
> From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> zram in-memory)
>
> On 04/08/2013 08:36 PM, Minchan Kim wrote:
> > On Tue, Apr 09, 2013 at 10:27:19AM +0900, Minchan Kim wrote:
> >
Hi Minchan,
On 04/10/2013 08:50 AM, Minchan Kim wrote:
On Tue, Apr 09, 2013 at 01:25:45PM -0700, Dan Magenheimer wrote:
From: Minchan Kim [mailto:minc...@kernel.org]
Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from zram
in-memory)
Hi Dan,
On Mon, Apr 08, 2013 at 09
Hi Dan,
On 04/10/2013 04:25 AM, Dan Magenheimer wrote:
From: Minchan Kim [mailto:minc...@kernel.org]
Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from zram
in-memory)
Hi Dan,
On Mon, Apr 08, 2013 at 09:32:38AM -0700, Dan Magenheimer wrote:
From: Minchan Kim
imer wrote:
> >>>> From: Minchan Kim [mailto:minc...@kernel.org]
> >>>> Sent: Monday, April 08, 2013 12:01 AM
> >>>> Subject: [PATCH] mm: remove compressed copy from zram in-memory
> >>>
> >>> (patch removed)
> >>&g
On Tue, Apr 09, 2013 at 01:37:47PM -0700, Dan Magenheimer wrote:
> > From: Minchan Kim [mailto:minc...@kernel.org]
> > Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> > zram in-memory)
> >
> > On Tue, Apr 09, 2013 at 10:27:19AM +0900, M
On Tue, Apr 09, 2013 at 01:25:45PM -0700, Dan Magenheimer wrote:
> > From: Minchan Kim [mailto:minc...@kernel.org]
> > Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> > zram in-memory)
> >
> > Hi Dan,
> >
> > On Mon, Apr 08,
On Tue, Apr 09, 2013 at 12:54:23PM -0700, Andrew Morton wrote:
> On Tue, 9 Apr 2013 10:02:31 +0900 Minchan Kim wrote:
>
> > > Also, what's up with the SWP_BLKDEV test? zram doesn't support
> > > SWP_FILE? Why on earth not?
> > >
> > > Putting swap_slot_free_notify() into block_device_operation
On Tue, Apr 09, 2013 at 01:36:52PM +0800, Ric Mason wrote:
> Hi Minchan,
> On 04/09/2013 09:02 AM, Minchan Kim wrote:
> >Hi Andrew,
> >
> >On Mon, Apr 08, 2013 at 02:17:10PM -0700, Andrew Morton wrote:
> >>On Mon, 8 Apr 2013 15:01:02 +0900 Minchan Kim wrote:
> >>
> >>>Swap subsystem does lazy swa
Monday, April 08, 2013 12:01 AM
>>>> Subject: [PATCH] mm: remove compressed copy from zram in-memory
>>>
>>> (patch removed)
>>>
>>>> Fragment ratio is almost same but memory consumption and compile time
>>>> is better. I am working to
> From: Minchan Kim [mailto:minc...@kernel.org]
> Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> zram in-memory)
>
> On Tue, Apr 09, 2013 at 10:27:19AM +0900, Minchan Kim wrote:
> > Hi Dan,
> >
> > On Mon, Apr 08, 2013 at 09:32:
> From: Minchan Kim [mailto:minc...@kernel.org]
> Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from
> zram in-memory)
>
> Hi Dan,
>
> On Mon, Apr 08, 2013 at 09:32:38AM -0700, Dan Magenheimer wrote:
> > > From: Minchan Kim [mailto:minc...@
On Tue, 9 Apr 2013 10:02:31 +0900 Minchan Kim wrote:
> > Also, what's up with the SWP_BLKDEV test? zram doesn't support
> > SWP_FILE? Why on earth not?
> >
> > Putting swap_slot_free_notify() into block_device_operations seems
> > rather wrong. It precludes zram-over-swapfiles for all time an
Hi Minchan,
On 04/09/2013 09:02 AM, Minchan Kim wrote:
Hi Andrew,
On Mon, Apr 08, 2013 at 02:17:10PM -0700, Andrew Morton wrote:
On Mon, 8 Apr 2013 15:01:02 +0900 Minchan Kim wrote:
Swap subsystem does lazy swap slot free with expecting the page
would be swapped out again so we can avoid un
On Tue, Apr 09, 2013 at 10:27:19AM +0900, Minchan Kim wrote:
> Hi Dan,
>
> On Mon, Apr 08, 2013 at 09:32:38AM -0700, Dan Magenheimer wrote:
> > > From: Minchan Kim [mailto:minc...@kernel.org]
> > > Sent: Monday, April 08, 2013 12:01 AM
> > > Subject: [PATCH]
Hi Dan,
On Mon, Apr 08, 2013 at 09:32:38AM -0700, Dan Magenheimer wrote:
> > From: Minchan Kim [mailto:minc...@kernel.org]
> > Sent: Monday, April 08, 2013 12:01 AM
> > Subject: [PATCH] mm: remove compressed copy from zram in-memory
>
> (patch removed)
>
> >
Hi Andrew,
On Mon, Apr 08, 2013 at 02:17:10PM -0700, Andrew Morton wrote:
> On Mon, 8 Apr 2013 15:01:02 +0900 Minchan Kim wrote:
>
> > Swap subsystem does lazy swap slot free with expecting the page
> > would be swapped out again so we can avoid unnecessary write.
>
> Is that correct? How can
On Mon, 8 Apr 2013 15:01:02 +0900 Minchan Kim wrote:
> Swap subsystem does lazy swap slot free with expecting the page
> would be swapped out again so we can avoid unnecessary write.
Is that correct? How can it save a write?
> But the problem in in-memory swap(ex, zram) is that it consumes
>
> From: Minchan Kim [mailto:minc...@kernel.org]
> Sent: Monday, April 08, 2013 12:01 AM
> Subject: [PATCH] mm: remove compressed copy from zram in-memory
(patch removed)
> Fragment ratio is almost same but memory consumption and compile time
> is better. I am working to add defr
Swap subsystem does lazy swap slot free with expecting the page
would be swapped out again so we can avoid unnecessary write.
But the problem in in-memory swap(ex, zram) is that it consumes
memory space until vm_swap_full(ie, used half of all of swap device)
condition meet. It could be bad if we u
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