On Tue, 24 Apr 2007, Christoph Lameter wrote:
On Tue, 24 Apr 2007, Hugh Dickins wrote:
Or Christoph may prevail in persuading there's no such problem.
This is pointless. NUMA allocations can only be controlled for the highest
zone. If we switch to a lower zone then we allocate on a
On Tue, Apr 24, 2007 at 08:50:48PM +0200, Andi Kleen wrote:
+
+LIST_HEAD(dmar_drhd_units);
+LIST_HEAD(dmar_rmrr_units);
Comment describing what lock protects those lists?
In fact there seems to be no locking. What about hotplug?
There is no support to handle an IOMMU hotplug at this
On Tue, 24 Apr 2007 13:12:42 -0700 (PDT) Christoph Lameter [EMAIL PROTECTED]
wrote:
On Tue, 24 Apr 2007, Andrew Morton wrote:
A highmem page can have buffers???
yep. Take a 4k page which is stored in four discontiguous 1k disk blocks.
The
data at page_buffers(page) is the sole
Hi!
From subsequent emails, I think you already got your answer, but just
in case...
Yes, if you enabled Replace swsusp by default and you already had it
set up for getting swsusp to resume. If not, and you're using an
initrd/ramfs, you'll need to modify it to echo
Jeremy Fitzhardinge wrote:
Andrew Morton wrote:
Well, it _is_ mysterious.
Did you try to locate the code which failed? I got lost in macros and
include files, and gave up very very easily. Stop hiding, Ingo.
OK, I've managed to reproduce it. Removing the
On 04/24, Eric W. Biederman wrote:
I don't know if this is the problem but it certainly needs to be fixed.
I guess you will re-submit these patches soon. May I suggest you to put
this
+ spin_lock_irq(tsk-sighand-siglock);
+ signal_wake_up(tsk, 1);
+
On Tue, 24 Apr 2007, Hugh Dickins wrote:
On Tue, 24 Apr 2007, Christoph Lameter wrote:
On Tue, 24 Apr 2007, Hugh Dickins wrote:
Or Christoph may prevail in persuading there's no such problem.
This is pointless. NUMA allocations can only be controlled for the highest
zone. If we
Andi Kleen wrote:
On Tuesday 24 April 2007 08:03:06 Ashok Raj wrote:
Floppy disk drivers dont work well with DMA remapping.
What is the problem? You can't allocate mappings 16MB?
floppy doesn't use the DMA mapping API :)
that's the problem
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To unsubscribe from this list: send the line
On Tue, Apr 24, 2007 at 09:33:15PM +0200, Andi Kleen wrote:
On Tuesday 24 April 2007 08:03:07 Ashok Raj wrote:
Some devices may not support entire 64bit DMA. In a situation where such
devices are co-located in a shared domain, we need to ensure there is some
address space reserved for
On Tue, 24 Apr 2007 13:24:24 -0700 Jeremy Fitzhardinge [EMAIL PROTECTED]
wrote:
Jeremy Fitzhardinge wrote:
Andrew Morton wrote:
Well, it _is_ mysterious.
Did you try to locate the code which failed? I got lost in macros and
include files, and gave up very very easily. Stop
Hello Pavel,
On Tue, Apr 24, 2007 at 09:28:46PM +0200, Pavel Machek wrote:
Hi!
Signed-off-by: Anton Vorontsov [EMAIL PROTECTED]
Yes please. Generic battery support is badly needed.
I'm glad you like it, thanks for the review!
Also I've done some code split. It removes all #ifdefs from
--- Gerhard Mack [EMAIL PROTECTED] wrote:
On Tue, 24 Apr 2007, Roberto De Ioris wrote:
Hi all,
this is the second release for UidBind LSM:
http://projects.unbit.it/uidbind/
UidBind allows call to bind() function only to the uid defined in a
configfs tree.
It is now
On Tue, Apr 24, 2007 at 09:31:09PM +0200, Andi Kleen wrote:
On Tuesday 24 April 2007 08:03:06 Ashok Raj wrote:
Floppy disk drivers dont work well with DMA remapping.
What is the problem? You can't allocate mappings 16MB?
No.. these drivers dont call DMA mapping api's.. thats the problem.
Hi!
Signed-off-by: Anton Vorontsov [EMAIL PROTECTED]
Yes please. Generic battery support is badly needed.
I'm glad you like it, thanks for the review!
Also I've done some code split. It removes all #ifdefs from battery.c,
and also separates core from sysfs and leds.
If there
On Tue, 24 Apr 2007 13:30:33 -0700 (PDT) Christoph Lameter [EMAIL PROTECTED]
wrote:
If the system has both high memory and normal memory then only
allocations
to highmemory are subject to memory policies etc etc. The block device
allocations would be in zone normal/dma and thus be
the DMA pool handler uses a semaphore as mutex. use the mutex API
instead of the (binary) semaphore
Signed-off-by: Matthias Kaehlcke [EMAIL PROTECTED]
--
diff --git a/drivers/base/dmapool.c b/drivers/base/dmapool.c
index cd467c9..9406259 100644
--- a/drivers/base/dmapool.c
+++
On Tue, 24 Apr 2007, Pavel Machek wrote:
Well, current uswsusp code can do most of stuff suspend2 can do, with
20% (or so) of kernel code.
Btw, this is a totally inane argument.
If the code just moved somewhere else, it's not less code.
You compare complete subsystems against complete
This patch add a missing '\n' at the end of the 'cover is open' string
in mmc_omap_switch_handler().
Signed-off-by: Arnaud Patard [EMAIL PROTECTED]
Signed-off-by: Tony Lindgren [EMAIL PROTECTED]
Index: linux-2.6.20/drivers/mmc/omap.c
On Tue, Apr 24, 2007 at 09:28:11PM +0200, Andi Kleen wrote:
On Tuesday 24 April 2007 08:03:03 Ashok Raj wrote:
PCI specs permit zero length reads (ZLR) even if the mapping for that
region
is write only. Support for this feature is indicated by the presence of a
bit
in the DMAR
On Tue, 24 Apr 2007, Andrew Morton wrote:
I would say that the filesystem is broke if it has such expectations
regardless of page migration.
Others disagree ;)
The filesystem has *told* the core kernel what its allocation constraints
are by setting up mapping_gfp_mask(). If the core
On Mon, 23 Apr 2007, Andrew Morton wrote:
Try this:
--- a/drivers/block/pktcdvd.c~packet-fix-error-handling
+++ a/drivers/block/pktcdvd.c
@@ -777,7 +777,8 @@ static int pkt_generic_packet(struct pkt
rq-cmd_flags |= REQ_QUIET;
blk_execute_rq(rq-q, pd-bdev-bd_disk, rq,
Andrew Morton wrote:
On Tue, 24 Apr 2007 13:00:49 -0700 Jeremy Fitzhardinge [EMAIL PROTECTED]
wrote:
Andrew Morton wrote:
Well, it _is_ mysterious.
Did you try to locate the code which failed? I got lost in macros and
include files, and gave up very very easily. Stop hiding,
As discussed earlier on LKML:
http://lkml.org/lkml/2006/5/4/44
Signed-off-by: Tony Lindgren [EMAIL PROTECTED]
Index: linux-2.6.20/drivers/mmc/omap.c
===
--- linux-2.6.20.orig/drivers/mmc/omap.c2007-04-24 15:22:12.0
Move divisor calculation into a separate function and
re-arrange the init order to make MMC_POWER_ON work.
Signed-off-by: Tony Lindgren [EMAIL PROTECTED]
Index: linux-2.6.20/drivers/mmc/omap.c
===
---
Andrew Morton wrote:
It's weird. And I don't think the locking selftest code calls
sched_clock() (or any other time-related thing) at all, does it?
I guess it ends up going through the scheduler, which does use it.
But... shrug
J
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To unsubscribe from this list: send the line
This whole notion that kernel lines of code is somehow different is a
stupid and idiotic _disease_ that is spread by microkernel people and
people who have been brainwashed by them.
I think a lot of people are tired of this argument, but I am glad you speak
up (as you did last year wrt s2ram).
On Tue, 2007-04-24 at 13:24 -0700, Jeremy Fitzhardinge wrote:
And sched_clock's use of local_irq_save/restore appears to be absolutely
correct, so I think it must be triggering a bug in either the self-tests
or lockdep itself.
Why does sched_clock need to disable interrupts?
Daniel
-
To
On Tue, 24 Apr 2007 13:44:50 -0700 (PDT) Christoph Lameter [EMAIL PROTECTED]
wrote:
On Tue, 24 Apr 2007, Andrew Morton wrote:
I would say that the filesystem is broke if it has such expectations
regardless of page migration.
Others disagree ;)
The filesystem has *told* the
* Linus Torvalds [EMAIL PROTECTED] wrote:
I have not a frigging clue whether that is the case in suspend2 vs
uswsusp, but I object to this idiotic argument of counting kernel
code. That's simply not a valid argument. It never was.
the raw linecount appears to be the following:
Check to see if an ATAPI device supports Asynchronous Notification.
If so, enable it.
changes from last version:
* fix typo in ata_id_has_AN and make word 76 test more clear
* If we fail to set the AN feature, just print a warning and continue
Signed-off-by: Kristen Carlson Accardi [EMAIL
Hi Pierre,
Find in this series the pending patches from Linux-OMAP to mainline for
drivers/mmc/omap.c
The patches series was applied against Linus' tree 2.6.21-rc7-git6.
Anyway, it was tested on OMAP H2 (using omap_h2_1610_defconfig available
on linus' tree).
BR,
Carlos.
--
Carlos Eduardo
On Tue, 24 Apr 2007, Andrew Morton wrote:
Then I think we should disable page migration for allocations that do not
allow access to the policy zone. That would fix it.
Can't we use mapping_gfp_mask() when allocating the destination page?
There is no point in migrating something if you
* Daniel Walker [EMAIL PROTECTED] wrote:
On Tue, 2007-04-24 at 13:24 -0700, Jeremy Fitzhardinge wrote:
And sched_clock's use of local_irq_save/restore appears to be absolutely
correct, so I think it must be triggering a bug in either the self-tests
or lockdep itself.
Why does
From: Andi Kleen [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 21:28:11 +0200
On Tuesday 24 April 2007 08:03:03 Ashok Raj wrote:
PCI specs permit zero length reads (ZLR) even if the mapping for that
region
is write only. Support for this feature is indicated by the presence of a
bit
in
On Tue, Apr 24, 2007 at 09:27:08PM +0200, Andi Kleen wrote:
On Tuesday 24 April 2007 08:03:02 Ashok Raj wrote:
+#ifdef CONFIG_DMAR
+#ifdef CONFIG_SMP
+static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
Why does it need an own interrupt type?
Problem is its MSI type
On Tue, 2007-04-24 at 22:59 +0200, Ingo Molnar wrote:
* Daniel Walker [EMAIL PROTECTED] wrote:
On Tue, 2007-04-24 at 13:24 -0700, Jeremy Fitzhardinge wrote:
And sched_clock's use of local_irq_save/restore appears to be absolutely
correct, so I think it must be triggering a bug in
The following patches should allow selection of conservative, powersave, and
ondemand in the kernel configuration.
William Heimbigner
[EMAIL PROTECTED]
diff -uprN -X linux-2.6.21-rc7-git6/Documentation/dontdiff
linux-2.6.21-rc7-git6/drivers/cpufreq/Kconfig
On Tue, 24 Apr 2007 19:00:52 +0100 (IST) Mel Gorman [EMAIL PROTECTED] wrote:
When kernelcore boot option is specified, kernel can't boot up on ia64
because of an infinite loop. In addition, the parsing code can be handled
in an architecture-independent manner.
This patch patches uses
* Ingo Molnar [EMAIL PROTECTED] wrote:
but the point I'm trying to make is that X shouldn't get more
CPU-time because it's more important (it's not: and as noted
earlier, thinking that it's more important skews the problem and
makes for too *much* scheduling). X should get more CPU
* Carlos Aguiar [EMAIL PROTECTED] [070424 21:01]:
Hi Pierre,
Find in this series the pending patches from Linux-OMAP to mainline for
drivers/mmc/omap.c
The patches series was applied against Linus' tree 2.6.21-rc7-git6.
Anyway, it was tested on OMAP H2 (using omap_h2_1610_defconfig
On Tue, Apr 24, 2007 at 09:03:23PM +, William Heimbigner wrote:
The following patches should allow selection of conservative, powersave, and
ondemand in the kernel configuration.
This has been rejected several times already.
Ondemand and conservative isn't a viable governor for all
On Tuesday 24 April 2007 22:33:04 Ashok Raj wrote:
With PCIE there is some benefit to keep dma addr low for performance reasons,
since it will use 32bit Transaction level packets instead of 64bit.
This reservation is only required if we have some legacy device under a p2p
where its
Shouldn't this be after the change that adds arch/i386/xen/Kconfig?
Otherwise you break bisects
It should be OK. The series should build and run at each patch (though
I have to admit I haven't tested this). In general I've been adding
config options for each feature as the
On Tue, 24 Apr 2007, William Heimbigner wrote:
The following patches should allow selection of conservative, powersave, and
ondemand in the kernel configuration.
William Heimbigner
[EMAIL PROTECTED]
diff -uprN -X linux-2.6.21-rc7-git6/Documentation/dontdiff
This changes the format of unknown status values to be less verbose and
uses an array instead of several different snprintf calls. Since only
enum values are assigned to it, poll_state is changed from int to enum.
Use abs() for dB values instead of two almost identical return lines.
On Tue, 24 Apr 2007 22:59:18 +0200 Ingo Molnar [EMAIL PROTECTED] wrote:
* Daniel Walker [EMAIL PROTECTED] wrote:
On Tue, 2007-04-24 at 13:24 -0700, Jeremy Fitzhardinge wrote:
And sched_clock's use of local_irq_save/restore appears to be absolutely
correct, so I think it must be
On 4/23/07, Ashok Raj [EMAIL PROTECTED] wrote:
Document Intel IOMMU driver boot option.
Signed-off-by: Ashok Raj [EMAIL PROTECTED]
Signed-off-by: Shaohua Li [EMAIL PROTECTED]
Index: linux-2.6.21-rc5/Documentation/Intel-IOMMU.txt
On Tuesday 24 April 2007 22:52:27 Daniel Walker wrote:
On Tue, 2007-04-24 at 13:24 -0700, Jeremy Fitzhardinge wrote:
And sched_clock's use of local_irq_save/restore appears to be absolutely
correct, so I think it must be triggering a bug in either the self-tests
or lockdep itself.
Why
Oleg Nesterov [EMAIL PROTECTED] writes:
On 04/24, Eric W. Biederman wrote:
I don't know if this is the problem but it certainly needs to be fixed.
I guess you will re-submit these patches soon. May I suggest you to put
this
+spin_lock_irq(tsk-sighand-siglock);
+
On Tue, 24 Apr 2007, Andrew Morton wrote:
Nothing special apart from
the usual problem with serial not accepting characters that we had for
awhile now.
I wasn't aware of that one.
I use a serial console on my x86_84 box. For a while now I can see all
output but I cannot type any
From: Andi Kleen [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 23:12:54 +0200
We already have a couple of other IOMMU architectures who essentially have
the same
problem. Have you checked how they solve this?
Sparc64, for one, only uses 32-bit IOMMU addresses. And we simply
don't try to handle
On Tue, 24 Apr 2007 13:58:35 -0700 (PDT) Christoph Lameter [EMAIL PROTECTED]
wrote:
On Tue, 24 Apr 2007, Andrew Morton wrote:
Then I think we should disable page migration for allocations that do not
allow access to the policy zone. That would fix it.
Can't we use
Hi!
Well, current uswsusp code can do most of stuff suspend2 can do, with
20% (or so) of kernel code.
Btw, this is a totally inane argument.
If the code just moved somewhere else, it's not less code.
It is not just moved. It is in userspace, where we can use liblzf /
gcrypt / ( and
On Monday 23 April 2007 23:56:44 Jeremy Fitzhardinge wrote:
Core Xen Implementation
This patch is a rollup of all the core pieces of the Xen
implementation, including booting, memory management, interrupts, time
and so on.
The patch is definitely too big.
+#ifdef CONFIG_XEN
+/* Xen only
Dave Jones wrote:
On Tue, Apr 24, 2007 at 09:03:23PM +, William Heimbigner wrote:
The following patches should allow selection of conservative, powersave,
and
ondemand in the kernel configuration.
This has been rejected several times already.
Ondemand and conservative isn't a
On Tue, Apr 24, 2007 at 11:17:55PM +0200, Markus Rechberger wrote:
+We also allocate gaurd pages with each mapping, so we can attempt to catch
+any overflow that might happen.
+
guess you probably mean guard tables here...
So there is a good chance i can be The Governor of California :-)
On Tue, 24 Apr 2007, Andrew Morton wrote:
mapping_gfp_mask if a pretty foul thing. Adding
struct page (*alloc_page)(struct address_space *mapping);
to address_space_operations would be a quite nice cleanup.
Ummm... If things would be that simple... I think we need
struct page
On Mon, Apr 23, 2007 at 05:59:06PM -0700, Li, Tong N wrote:
I don't know if we've discussed this or not. Since both CFS and SD claim
to be fair, I'd like to hear more opinions on the fairness aspect of
these designs. In areas such as OS, networking, and real-time, fairness,
and its more
Allow user space to determine if a disk supports Asynchronous Notification
of media changes. This is done by adding a new sysfs file capability_flags,
which is documented in (insert file name). This sysfs file will export all
disk capabilities flags to user space. We also define a new flag to
My suggestion would be to allocate top-down in the 32-bit IOMMU space.
I think that's good for normal things, but it's not unreasonable to
want to map 4 GB of memory at once for an Infiniband device.
So maybe we would want some heuristics about the size of the mapping
being requested or the
On Tue, 2007-04-24 at 23:20 +0200, Andi Kleen wrote:
On Tuesday 24 April 2007 22:52:27 Daniel Walker wrote:
On Tue, 2007-04-24 at 13:24 -0700, Jeremy Fitzhardinge wrote:
And sched_clock's use of local_irq_save/restore appears to be absolutely
correct, so I think it must be triggering a
Send an uevent to user space to indicate that a media change event has occurred.
Changes from last version:
* use get/put_device to increment reference count on the device struct
Signed-off-by: Kristen Carlson Accardi [EMAIL PROTECTED]
Index: 2.6-git/block/genhd.c
On Tue, Apr 24, 2007 at 02:23:51PM -0700, David Miller wrote:
From: Andi Kleen [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 23:12:54 +0200
We already have a couple of other IOMMU architectures who essentially have
the same
problem. Have you checked how they solve this?
Sparc64, for one,
When we get an SDB FIS with the 'N' bit set, we should send
an event to user space to indicate that there has been a
media change. This will be done via the block device.
changed from last version:
* Make sure that port_addr is within ATA_MAX_DEVICES
Signed-off-by: Kristen Carlson Accardi
From: Roland Dreier [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 14:32:42 -0700
My suggestion would be to allocate top-down in the 32-bit IOMMU space.
I think that's good for normal things, but it's not unreasonable to
want to map 4 GB of memory at once for an Infiniband device.
That's what
From: Ashok Raj [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 14:38:35 -0700
Its not clear if we have a very generic device breakage.. most devices
on these platforms are going to be more recent, (except maybe some
legacy fd)...
I'm not so sure, there are some modern sound cards that have
a
del_timer_sync() buys nothing for cancel_delayed_work(), but it is less
efficient since it locks the timer unconditionally, and may wait for the
completion of the delayed_work_timer_fn().
cancel_delayed_work() == 0 means:
before this patch:
work-func may still be running
Nikita Danilov wrote:
Maybe I failed to describe the problem presicely.
Suppose that all chunks have been checked. After that, for every inode
I0 having continuations I1, I2, ... In, one has to check that every
logical block is presented in at most one of these inodes. For this one
has to read
I was enjoying yet another session of beating my head against the wall
trying to do useful things with old hardware :-), and managed to cause a
kernel panic by simply trying to mount a cdrom in the context of a DSL-N
installation.
The SCSI host adapter is an Adaptec AHA-1542B, and when I try to
On Tuesday 24 April 2007 23:50:26 David Miller wrote:
From: Ashok Raj [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 14:38:35 -0700
Its not clear if we have a very generic device breakage.. most devices
on these platforms are going to be more recent, (except maybe some
legacy fd)...
I'm
On 4/24/07, Dave Jones [EMAIL PROTECTED] wrote:
On Tue, Apr 24, 2007 at 09:03:23PM +, William Heimbigner wrote:
The following patches should allow selection of conservative, powersave, and
ondemand in the kernel configuration.
This has been rejected several times already.
Ondemand and
On Tue, 24 Apr 2007, Casey Schaufler wrote:
--- Gerhard Mack [EMAIL PROTECTED] wrote:
On Tue, 24 Apr 2007, Roberto De Ioris wrote:
Hi all,
this is the second release for UidBind LSM:
http://projects.unbit.it/uidbind/
UidBind allows call to bind() function only to
In article [EMAIL PROTECTED] you wrote:
Could you explain for the audience the technical definition of fairness
and what sorts of error metrics are commonly used? There seems to be
some disagreement, and you're neutral enough of an observer that your
statement would help.
And while we are at
Grow dev page simply passes GFP_NOFS to find_or_create_page. This means the
allocation of radix tree nodes is done with GFP_NOFS and the allocation
of a new page is done using GFP_NOFS.
The mapping has a flags field that contains the necessary allocation flags for
the page cache allocation. These
The find_or_create function calls alloc_page with the gfp_mask passed to it
which is derived from the mappings gfp mask. So the allocation flags are right
(assuming my bugfix to fs/buffer.c is applied).
However, we call a alloc_page instead of page_cache_alloc in
find_or_create_page.
This means
Add a flushing and clearing function for higher order pages.
These are provisional and will likely have to be optimized.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
fs/libfs.c |4 ++--
include/linux/highmem.h | 12
include/linux/pagemap.h | 25
This transforms the page cache code to use page_cache_xxx calls.
Patch could be more complete.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
fs/buffer.c | 99 +---
fs/libfs.c | 13 +++--
fs/mpage.c
We use the macros PAGE_CACHE_SIZE PAGE_CACHE_SHIFT PAGE_CACHE_MASK
and PAGE_CACHE_ALIGN in various places in the kernel. These are useful
if one only want to support one page size in the page cache.
This patch provides a set of functions in order to provide the
ability to define new page size in
Compound pages can be on the LRU. This means that the page pointer
to the head page is on a pagevec. In that case we need full LRU processing
for the page in release_pages().
The check for compound pages in release_pages() was introduced by
Nick Piggin to make sure that the page count in tail
Compound pages must increment the counters in terms of base pages.
If we detect a compound page then add the number of base pages that
a compound page has to the counter.
This will avoid numerous changes in the VM to fix up page accounting
as we add more support for compound pages.
Also fix up
Add a couple of more compound functions to avoid having to duplicate code in
various places.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
include/linux/mm.h | 15 +++
1 file changed, 15 insertions(+)
Index: linux-2.6.21-rc7/include/linux/mm.h
If we add a new flag so that we can distinguish between the
first page and the tail pages then we can avoid to use page-private
in the first page. page-private == page for the first page, so there
is no real information in there.
Freeing up page-private makes the use of compound pages more
On 4/24/07, Pavel Machek [EMAIL PROTECTED] wrote:
so, while it's probably apples to oranges, uswsusp seems to be larger,
while there's at least one feature that it is missing.
(We are talking save 100% memory here).
As I said, that one feature is doable in uswsusp, too. It is 200
lines. It
There are a series of open coded reimplementation of memclear_highpage_flush
all over the page cache code. Call memclear_highpage_flush in those locations.
Consolidates code and eases maintenance.
[There seems to be a better patch in mm. This patch here is just to make things
work against 2.6.21
V2-V3
- More restructuring
- It actually works!
- Add XFS support
- Fix up UP support
- Work out the direct I/O issues
- Add CONFIG_LARGE_BLOCKSIZE. Off by default which makes the inlines revert
back to constants. Disabled for 32bit and HIGHMEM configurations.
This also allows a gradual
From: David Chinner [EMAIL PROTECTED]
Patch is attached that converts the XFS data path to use large order
page cache pages.
I haven't tested this on a real system yet but it works on UML. I've
tested it with fsx and it seems to do everything it is supposed to.
Data is actually written to the
This adds variable page size support. It is then possible to mount filesystems
that have a larger blocksize than the page size.
F.e. the following is possible on x86_64 and i386 that have only a 4k page
size.
mke2fs -b 16384 /dev/hdd2 Ignore warning about too large block size
mount
Readahead is now dependent on the page size. For larger page sizes
we want less readahead.
Add a parameter to max_sane_readahead specifying the page order
and update the code in mm/readahead.c to be aware of variant
page sizes.
Mark the 2M readahead constant as a potential future problem.
We can now reclaim larger pages. Adjust the VM counters to deal with it.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
mm/vmscan.c | 15 ---
1 file changed, 8 insertions(+), 7 deletions(-)
Index: linux-2.6.21-rc7/mm/vmscan.c
set_blocksize is changed to allow to specify a blocksize larger than a
page. If that occurs then we switch the device to use compound pages.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
fs/block_dev.c | 22 +++---
fs/buffer.c|2 +-
fs/inode.c |5 +
Before we start changing the page order we better get some debugging
in there that trips us up whenever a wrong order page shows up in a
mapping. This will be helpful for converting new filesystems to
utilize higher orders.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
mm/filemap.c |
The simplest file system to use is ramfs. Add a mount parameter that
specifies the page order of the pages that ramfs should use. If the
order is greater than zero then disable mmap functionality.
This could be removed if the VM would be changes to support faulting
higher order pages but for now
On Wed, Apr 25, 2007 at 12:03:57AM +0200, Andi Kleen wrote:
On Tuesday 24 April 2007 23:50:26 David Miller wrote:
From: Ashok Raj [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 14:38:35 -0700
Its not clear if we have a very generic device breakage.. most devices
on these platforms are
On Tue, 24 Apr 2007, Dave Jones wrote:
On Tue, Apr 24, 2007 at 09:03:23PM +, William Heimbigner wrote:
The following patches should allow selection of conservative, powersave, and
ondemand in the kernel configuration.
This has been rejected several times already.
Ondemand and conservative
LAPLACE Cyprien wrote:
An example: in kernel/pid.c:alloc_pid(), if one of the guest CPUs is
descheduled when holding the pidmap_lock, what happens to the other
guest CPUs who want to alloc/free pids ? Are they blocked too ?
Yup. This is where it's really nice to have directed yields, where
Fix the attempting to setting message in ohci1394.
Signed-off-by: Simon Arlott [EMAIL PROTECTED]
---
drivers/ieee1394/ohci1394.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/ieee1394/ohci1394.c b/drivers/ieee1394/ohci1394.c
index 628130a..107b272 100644
---
[EMAIL PROTECTED] a écrit :
--- linux-2.6.21-rc7.orig/include/linux/fs.h2007-04-24 11:31:49.0
-0700
+++ linux-2.6.21-rc7/include/linux/fs.h 2007-04-24 11:37:21.0 -0700
@@ -435,6 +435,11 @@ struct address_space {
struct inode*host; /* owner:
On Fri, Apr 20, 2007 at 12:10:43PM -0700, Christoph Lameter wrote:
On Fri, 20 Apr 2007, Dave Kleikamp wrote:
On Fri, 2007-04-20 at 12:05 +0100, Mel Gorman wrote:
comments about missing page_cache_size() covered elsewhere. However, I
note that Dave Kleikamp might be interested in this
On Tue, 24 Apr 2007 14:50:26 -0700 (PDT)
David Miller [EMAIL PROTECTED] wrote:
From: Ashok Raj [EMAIL PROTECTED]
Date: Tue, 24 Apr 2007 14:38:35 -0700
Its not clear if we have a very generic device breakage.. most devices
on these platforms are going to be more recent, (except maybe some
Mr Ready,
If you want to invite Linux kernel developers to your webinar, please
ask your secretary to send individual invitations. I'm sure you can do
it as the CTO of MontaVista Software.
Please don't pay spammers. Nobody likes them, especially those who are
subjected to spam as a result of
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