On Wednesday 09 May 2012, Christoph Hellwig wrote:
> On Wed, May 09, 2012 at 01:59:40PM +, Arnd Bergmann wrote:
> > My feeling is that we should just treat every (REQ_SYNC | REQ_READ)
> > request the same and let them interrupt long-running writes,
> > independent of whether it's REQ_META or de
On Mon, May 07, 2012 at 10:16:30PM +0530, S, Venkatraman wrote:
[..]
> This feature doesn't fiddle with the I/O scheduler's ability to balance
> read vs write requests or handling requests from various process queues (CFQ).
>
Does this feature work with CFQ? As CFQ does not submit sync IO (for
i
On Wed, May 09, 2012 at 01:59:40PM +, Arnd Bergmann wrote:
> My feeling is that we should just treat every (REQ_SYNC | REQ_READ)
> request the same and let them interrupt long-running writes,
> independent of whether it's REQ_META or demand paging.
It's funny that the CFQ scheduler used to boo
On Wednesday 09 May 2012, Dave Chinner wrote:
> > In low end flash devices, some requests might take too long than normal
> > due to background device maintenance (i.e flash erase / reclaim procedure)
> > kicking in in the context of an ongoing write, stalling them by several
> > orders of magnitud
On Mon, May 07, 2012 at 10:16:30PM +0530, S, Venkatraman wrote:
> Mon, May 7, 2012 at 5:01 AM, Dave Chinner wrote:
> > On Thu, May 03, 2012 at 07:53:00PM +0530, Venkatraman S wrote:
> >> From: Ilan Smith
> >>
> >> Add attribute to identify demand paging requests.
> >> Mark readpages with demand p
On Tue, May 8, 2012 at 11:58 AM, mani wrote:
> How about adding the AS_DMPG flag in the file -> address_space when getting
> a filemap_fault()
> so that we can treat the page fault pages as the high priority pages over
> normal read requests.
> How about changing below lines for the support of the
Mon, May 7, 2012 at 5:01 AM, Dave Chinner wrote:
> On Thu, May 03, 2012 at 07:53:00PM +0530, Venkatraman S wrote:
>> From: Ilan Smith
>>
>> Add attribute to identify demand paging requests.
>> Mark readpages with demand paging attribute.
>>
>> Signed-off-by: Ilan Smith
>> Signed-off-by: Alex Lem
On Thu, May 03, 2012 at 07:53:00PM +0530, Venkatraman S wrote:
> From: Ilan Smith
>
> Add attribute to identify demand paging requests.
> Mark readpages with demand paging attribute.
>
> Signed-off-by: Ilan Smith
> Signed-off-by: Alex Lemberg
> Signed-off-by: Venkatraman S
> ---
> fs/mpage.c
From: Ilan Smith
Add attribute to identify demand paging requests.
Mark readpages with demand paging attribute.
Signed-off-by: Ilan Smith
Signed-off-by: Alex Lemberg
Signed-off-by: Venkatraman S
---
fs/mpage.c|2 ++
include/linux/bio.h |7 +++
include/linux/
