From: Ira Weiny
Avoid open coding shift and mask operations by defining and using helper
macros for PKey operations.
Reviewed-by: Dan Williams
Signed-off-by: Ira Weiny
---
Changes from V3:
new patch suggested by Dan Williams to use macros better.
---
arch/x86/include/asm/pgtable.h
From: Ira Weiny
PKey faults may now happen on kernel mappings if the feature is enabled.
Remove the warning in the fault path if PKS is enabled.
Reviewed-by: Dan Williams
Signed-off-by: Ira Weiny
---
arch/x86/mm/fault.c | 9 +
1 file changed, 5 insertions(+), 4 deletions(-)
diff
From: Ira Weiny
Protection Keys for Supervisor pages (PKS) enables fast, hardware thread
specific, manipulation of permission restrictions on supervisor page
mappings. It uses the same mechanism of Protection Keys as those on
User mappings but applies that mechanism to supervisor mappings using
From: Ira Weiny
Protection Keys User (PKU) and Protection Keys Supervisor (PKS) work in
similar fashions and can share common defines. Specifically PKS and PKU
each have:
1. A single control register
2. The same number of keys
3. The same number of bits in the register
From: Ira Weiny
Introduce a new page protection mechanism for supervisor pages, Protection Key
Supervisor (PKS).
Generally PKS enables protections on 'domains' of supervisor pages to limit
supervisor mode access to pages beyond the normal paging protections. PKS
works in a similar fashion
On Wed, Mar 17, 2021 at 02:44:41PM +0100, Thomas Gleixner wrote:
> On Tue, Mar 16 2021 at 00:37, Ira Weiny wrote:
> >
> > I think I see the issue. I think this is an invalid configuration.
> >
> > 00:26:43 > grep DEBUG_KMAP config-5.11.0-rc7-2-g61b205f57991
From: Ira Weiny
The kernel test robot found that __kmap_local_sched_out() was not
correctly skipping the guard pages when
CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP was set.[1] This was due to
CONFIG_DEBUG_HIGHMEM check being used.
Change the configuration check to be correct.
[1] https
and I only used one or two to keep it warm.
-- Ira
--
You received this message because you are subscribed to the Google Groups "Brewtus" group.
To unsubscribe from this group and stop receiving emails from it, send an email to brewtus+unsubscr...@googlegroups.com.
To view this discus
Title: Re: Picked up a Brewtus II. Tips on troubleshooting.
Hello Roger,
You might find this useful.
www.roasterthing.com/downloads/brewtus.zip
Everything I've ever collected on the Brewtus.
-- Ira
--
You received this message because you are subscribed to the Google Groups "Br
On Wed, Mar 17, 2021 at 02:59:01PM +0100, Thomas Gleixner wrote:
> On Fri, Mar 12 2021 at 07:36, Ira Weiny wrote:
> > On Fri, Mar 12, 2021 at 07:54:13AM +0100, Christoph Hellwig wrote:
> >> So with the new kmap_local interface is it possible / advisable to
> >> use local
Birders
Patty Ecklemeyer called to say she has a juv Harris's Sparrow in her yard
on and off. It's been there the last couple of days and occasionally since
1/2.
--
Ira Sanders
Golden, CO
"My mind is a raging torrent flooded with rivulets of thought cascading
into a waterfall of cre
On Fri, Mar 05, 2021 at 04:20:58PM -0800, 'Ira Weiny' wrote:
> From: Ira Weiny
>
> kmap is inefficient and we are trying to reduce the usage in the kernel.
> There is no readily apparent reason why initp_page needs to be allocated
> and kmap'ed() but sigstruct needs to be page al
On Tue, Mar 16, 2021 at 12:07:24PM +0100, David Sterba wrote:
> On Fri, Mar 12, 2021 at 12:05:00PM -0800, Ira Weiny wrote:
> > On Fri, Mar 12, 2021 at 08:41:41PM +0100, David Sterba wrote:
> > > On Tue, Feb 16, 2021 at 06:48:22PM -0800, ira.we...@intel.com wrote:
>
Adding Thomas. Thomas I've been looking into the following test failure:
https://lore.kernel.org/lkml/20210304083825.GB17830@xsang-OptiPlex-9020/
See below.
On Fri, Mar 12, 2021 at 02:27:55PM +0800, Oliver Sang wrote:
> Hi Ira,
[snip]
> > > >
> > > > caused
Steve
I had 1 Lincoln's Sparrow yesterday in the yard.
Ira Sanders
On Sat, Mar 13, 2021, 9:42 AM Steve Brown wrote:
> Hey COBirders,
>
> I have had a couple of Lincoln’s Sparrows in my yard in NW COS, one 3/8
> that I banded, and another one seen this morning (unbanded). Looking
ogic correct? I would have expected.
return (ops && ops->flags & DMA_F_PCI_P2PDMA_SUPPORTED);
Ira
ogic correct? I would have expected.
return (ops && ops->flags & DMA_F_PCI_P2PDMA_SUPPORTED);
Ira
___
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
ing at the
implementation I'm not clear why pci_p2pdma_dma_map_type() needs to exist?
Ira
[snip]
> +
> +/**
> + * pci_p2pdma_dma_map_type - determine if a DMA mapping should use the
> + * bus address, be mapped normally or fail
> + * @dev: device doing the DMA request
> + * @pgmap:
ing at the
implementation I'm not clear why pci_p2pdma_dma_map_type() needs to exist?
Ira
[snip]
> +
> +/**
> + * pci_p2pdma_dma_map_type - determine if a DMA mapping should use the
> + * bus address, be mapped normally or fail
> + * @dev: device doing the DMA request
> + * @pgmap:
ap = to_p2p_pgmap(page->pgmap);
> +
> + WARN_ON(!is_pci_p2pdma_page(page));
Shouldn't this check be before the to_p2p_pgmap() call? And I've been told not
to introduce WARN_ON's. Should this be?
if (!is_pci_p2pdma_page(page))
return -1;
???
Ira
ap = to_p2p_pgmap(page->pgmap);
> +
> + WARN_ON(!is_pci_p2pdma_page(page));
Shouldn't this check be before the to_p2p_pgmap() call? And I've been told not
to introduce WARN_ON's. Should this be?
if (!is_pci_p2pdma_page(page))
return -1;
???
Ira
__
On Fri, Mar 12, 2021 at 08:41:41PM +0100, David Sterba wrote:
> On Tue, Feb 16, 2021 at 06:48:22PM -0800, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > I am submitting these for 5.13.
> >
> > Further work to remove more kmap() call
sting ordering of kmap_local_page() makes
converting the other calls hacky at best. I'm not sure what to do about them.
The best I've come up with is doing a hacky extra unmap/remap to preserve the
nesting.
Anyway, I'd prefer to leave this additional temp variable but I can certainly
change if it you want. The other conversions may never work/land. :-/
Ira
tter than I what
performance would be.
FWIW I have been working on converting kmaps to kmap_local. Most of the
instances don't schedule AFAICT.
What I really don't want to see is any kmap'ings handed to another thread. I
am working hard to eliminate the use of kmap for that use. Is that going to be
a problem?
Ira
On Tue, Feb 16, 2021 at 06:48:22PM -0800, 'Ira Weiny' wrote:
> From: Ira Weiny
>
> I am submitting these for 5.13.
Just a friendly ping on this set.
Ira
>
> Further work to remove more kmap() calls in favor of the kmap_local_page()
> this
> series converts those call
On Tue, Mar 09, 2021 at 08:53:04PM +, Chaitanya Kulkarni wrote:
> Ira,
>
> On 3/4/21 00:23, kernel test robot wrote:
> > Greeting,
> >
> > FYI, we noticed the following commit (built with gcc-9):
> >
> > commit: 61b205f579911a11f0b576f73275eca2aed0
may take
the patches via the mm tree, unless Linus is ok with a late pull."
-- https://lore.kernel.org/lkml/20210224123049.gx1...@twin.jikos.cz/
But reading that again I'm not sure what he meant.
David?
Ira
>
> Acked-by: Andrew Morton
>
Birders
Just to complicate things, a female Cassin's just showed up. Head pattern
and streaking are different from the Purple Finch.
Ira Sanders
Golden
--
--
You received this message because you are subscribed to the Google
Groups "Colorado Birds" group.
To post to this group,
Birders
The Purple Finch is back. It was here yesterday about the same time.
Ira Sanders
Golden
--
--
You received this message because you are subscribed to the Google
Groups "Colorado Birds" group.
To post to this group, send email to cobirds@googlegroups.com
For more opti
From: Ira Weiny
The memset() does not need to be performed atomically. Use
kmap_local_page() which will improved performance for this call.
Cc: Chaitanya Kulkarni
Cc: David Sterba
Signed-off-by: Ira Weiny
---
include/linux/highmem.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions
From: Ira Weiny
Previously this was submitted to convert to zero_user()[1]. zero_user() is not
the same as memzero_user() and in fact some zero_user() calls may be better off
as memzero_user(). Regardless it was incorrect to convert btrfs to
zero_user().
This series corrects this by lifting
From: Ira Weiny
memzero_page() can replace the kmap/memset/kunmap pattern in other
places in the code. While zero_user() has the same interface it is not
the same call and its use should be limited and some of those calls may
be better converted from zero_user() to memzero_page().[1
From: Ira Weiny
There are many places where kmap/memset/kunmap patterns occur.
Use the newly lifted memzero_page() to eliminate direct uses of kmap and
leverage the new core functions use of kmap_local_page().
The development of this patch was aided by the following coccinelle
script
[
https://issues.apache.org/jira/browse/ARROW-11915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ira Saktor closed ARROW-11915.
--
Resolution: Not A Problem
Turns out it is just a problem with classpath variable not configured
Ira Saktor created ARROW-11915:
--
Summary: Pyarrow: non-legacy filesystem connection doesn't work
while legacy does.
Key: ARROW-11915
URL: https://issues.apache.org/jira/browse/ARROW-11915
Project
Ira Saktor created ARROW-11915:
--
Summary: Pyarrow: non-legacy filesystem connection doesn't work
while legacy does.
Key: ARROW-11915
URL: https://issues.apache.org/jira/browse/ARROW-11915
Project
Josh,
Thanks for the post and picture. The bird shown looks the same as the
birds at my feeder.
Ira
On Sat, Mar 6, 2021, 3:38 PM Josh Bruening <87211...@gmail.com> wrote:
> All,
>
> To piggy-back on Ira's post, there are at least 4 different Purple Finches
> that have be
.
After they left the water they flew into the trees across the street. I'll
watch for them.
--
Ira Sanders
Golden, CO
"My mind is a raging torrent flooded with rivulets of thought cascading
into a waterfall of creative alternatives."
--
--
You received this message because you are
From: Ira Weiny
kmap is inefficient and we are trying to reduce the usage in the kernel.
There is no readily apparent reason why initp_page needs to be allocated
and kmap'ed() but sigstruct needs to be page aligned and token
512 byte aligned.
kmalloc() can give us this alignment but we need
lags, unsigned long
> sp, unsigned long arg,
> /* Kernel thread ? */
> if (unlikely(p->flags & PF_KTHREAD)) {
> memset(childregs, 0, sizeof(struct pt_regs));
> +
> + /*
> + * Even though there is no real user state he
On Fri, Feb 26, 2021 at 03:23:40PM +0100, David Sterba wrote:
> On Thu, Feb 25, 2021 at 08:32:34AM -0800, Ira Weiny wrote:
> > On Thu, Feb 25, 2021 at 02:12:52PM +0100, David Sterba wrote:
> > > On Wed, Feb 24, 2021 at 09:59:12AM -0800, Ira Weiny wrote:
> > > > On W
On Thu, Feb 25, 2021 at 02:12:52PM +0100, David Sterba wrote:
> On Wed, Feb 24, 2021 at 09:59:12AM -0800, Ira Weiny wrote:
> > On Wed, Feb 24, 2021 at 01:30:49PM +0100, David Sterba wrote:
> > > On Tue, Feb 23, 2021 at 11:25:06AM -0800, Ira Weiny wrote:
> > > > On T
On Wed, Feb 24, 2021 at 01:30:49PM +0100, David Sterba wrote:
> On Tue, Feb 23, 2021 at 11:25:06AM -0800, Ira Weiny wrote:
> > On Tue, Feb 23, 2021 at 09:13:42AM -0800, Linus Torvalds wrote:
> > > On Tue, Feb 23, 2021 at 7:03 AM David Sterba wrote:
> [...]
>
&
Well David, I feel Chris Fleuriel was doing a service for cobirders in
offering that book and don't see a problem with it.
Ira Sanders
On Wed, Feb 24, 2021, 9:12 AM David Suddjian wrote:
> Dear CoBirders,
>
> This is a Colorado Birds list, so let's keep discussion focused there,
On Tue, Feb 23, 2021 at 09:13:42AM -0800, Linus Torvalds wrote:
> On Tue, Feb 23, 2021 at 7:03 AM David Sterba wrote:
> > Ira Weiny (8):
> > iov_iter: Remove memzero_page() in favor of zero_user()
>
> Ugh. I absolutely _detest_ this patch.
Sorry.
>
> &q
On Fri, Feb 12, 2021 at 02:04:44PM +1100, Stephen Rothwell wrote:
> Hi Ira,
>
> On Thu, 11 Feb 2021 17:07:41 -0800 Ira Weiny wrote:
> >
> > On Fri, Feb 12, 2021 at 10:38:10AM +1100, Stephen Rothwell wrote:
> > > from the fscache tree and commit:
> > >
From: Ira Weiny
These kmaps are thread local and don't need to be atomic. So they can use
the more efficient kmap_local_page(). However, the mapping of pages in
the stripes and the additional parity and qstripe pages are a bit
trickier because the unmapping must occur in the opposite order
From: Ira Weiny
I am submitting these for 5.13.
Further work to remove more kmap() calls in favor of the kmap_local_page() this
series converts those calls which required more than a common pattern which
were covered in my previous series[1]. This is the second of what I hope to be
3 series
From: Ira Weiny
btrfsic_read_block() (which calls kmap()) and
btrfsic_release_block_ctx() (which calls kunmap()) are always called
within a single thread of execution.
Therefore the mappings created within these calls can be a thread local
mapping.
Convert the kmap() of bloc_ctx->pa
From: Ira Weiny
Again there is an array of pointers which must be unmapped in the correct
order.
Convert the kmap()'s to kmap_local_page() and adjust the unmapping
to work backwards through the unmapping loop.
Signed-off-by: Ira Weiny
---
fs/btrfs/check-integrity.c | 8
1 file
From: Ira Weiny
Use a simple coccinelle script to help convert the most common
kmap()/kunmap() patterns to kmap_local_page()/kunmap_local().
Note that some kmaps which were caught by this script needed to be
handled by hand because of the strict unmapping order of kunmap_local()
so
After doing that I don't see the zero_user() as below.
All that said the resolution below seems correct.
Ira
>
> from the btrfs tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
On Thu, Feb 11, 2021 at 08:38:03PM +0100, David Sterba wrote:
> On Tue, Feb 09, 2021 at 10:22:13PM -0800, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > Per the conversation on V1 it looks like Andrew would like this to go
> > through
> > the
Hi,
I agree with Bill. Keeping confidentiality in all TLS/1.3 connections is
future proofing.
Supposedly analyzing and then leaving confidentiality out invites future
attacks.
Cheers,
- Ira
On Thu, Feb 11, 2021 at 9:56 AM Bill Frantz wrote:
> On 2/11/21 at 9:01 PM, rsalz=40aka
On Thu, Feb 04, 2021 at 01:02:53PM +0530, Prathu Baronia wrote:
> From: Ira Weiny
>
> kmap_atomic() is being deprecated in favor of kmap_local_page().
>
> Replace the uses of kmap_atomic() within the highmem code.
>
> On profiling clear_huge_page() using ftrace a
On Wed, Feb 10, 2021 at 06:56:06PM +, Matthew Wilcox wrote:
> On Wed, Feb 10, 2021 at 08:29:01AM -0800, Ira Weiny wrote:
> > And I thought it was a good idea. Any file system development should have
> > tests with DEBUG_VM which should cover Matthew's concern w
From: Ira Weiny
Add VM_BUG_ON bounds checks to ensure the newly lifted and created page
memory operations do not result in corrupted data in neighbor pages.[1][2]
[1]
https://lore.kernel.org/lkml/20201210053502.gs1563...@iweiny-desk2.sc.intel.com/
[2]
https://lore.kernel.org/lkml
On Wed, Feb 10, 2021 at 04:41:34PM +, Christoph Hellwig wrote:
> On Wed, Feb 10, 2021 at 08:29:01AM -0800, Ira Weiny wrote:
> > On Wed, Feb 10, 2021 at 12:55:02PM +, Christoph Hellwig wrote:
> > > On Tue, Feb 09, 2021 at 10:22:17PM -0800, ira.we...@intel.com wrote:
>
On Wed, Feb 10, 2021 at 06:57:30AM +, Chaitanya Kulkarni wrote:
> On 2/9/21 22:25, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > Add VM_BUG_ON bounds checks to ensure the newly lifted and created page
> > memory operations do not result in corru
On Wed, Feb 10, 2021 at 12:55:02PM +, Christoph Hellwig wrote:
> On Tue, Feb 09, 2021 at 10:22:17PM -0800, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > Add VM_BUG_ON bounds checks to ensure the newly lifted and created page
> > memory operations do n
From: Ira Weiny
There are many places where the pattern kmap/memcpy/kunmap occurs.
This pattern was lifted to the core common functions
memcpy_[to|from]_page().
Use these new functions to reduce the code, eliminate direct uses of
kmap, and leverage the new core functions use of kmap_local_page
From: Ira Weiny
There are many places where kmap/memove/kunmap patterns occur.
This pattern exists in the core common function copy_highpage().
Use copy_highpage to avoid open coding the use of kmap and leverages the
core functions use of kmap_local_page().
Development of this patch was aided
From: Ira Weiny
There are many places where kmap/memset/kunmap patterns occur.
This pattern exists in the core as zero_user()
Use zero_user() to eliminate direct uses of kmap and leverage the new
core functions use of kmap_local_page().
The development of this patch was aided by the following
From: Ira Weiny
3 more common kmap patterns are kmap/memcpy/kunmap, kmap/memmove/kunmap.
and kmap/memset/kunmap.
Add helper functions for those patterns which use kmap_local_page().
Cc: Andrew Morton
Cc: Christoph Hellwig
Signed-off-by: Ira Weiny
---
New for V2
---
include/linux/highmem.h
From: Ira Weiny
zero_user() is already defined with the same interface and contains the
same code pattern as memzero_page(). Remove memzero_page() and use the
already defined common function zero_user()
To: Alexander Viro
Cc: Andrew Morton
Cc: Christoph Hellwig
Signed-off-by: Ira Weiny
From: Ira Weiny
Add VM_BUG_ON bounds checks to ensure the newly lifted and created page
memory operations do not result in corrupted data in neighbor pages and
to make them consistent with zero_user().[1][2]
[1]
https://lore.kernel.org/lkml/20201210053502.gs1563...@iweiny-desk2.sc.intel.com
From: Ira Weiny
Changes from V1:
Rework commit messages because they were very weak
Change 'fs/btrfs: X' to 'btrfs: x'
https://lore.kernel.org/lkml/20210209151442.gu1...@suse.cz/
Per Andrew
Split out changes to highmem.h
From: Ira Weiny
Working through a conversion to a call kmap_local_page() instead of
kmap() revealed many places where the pattern kmap/memcpy/kunmap
occurred.
Eric Biggers, Matthew Wilcox, Christoph Hellwig, Dan Williams, and Al
Viro all suggested putting this code into helper functions. Al
From: Ira Weiny
kmap_local_page() is more efficient and is well suited for these calls.
Convert the kmap() to kmap_local_page()
Cc: Andrew Morton
Cc: Christoph Hellwig
Signed-off-by: Ira Weiny
---
New for V2
---
include/linux/highmem.h | 8
1 file changed, 4 insertions(+), 4
On Tue, Feb 09, 2021 at 01:58:37PM -0800, Andrew Morton wrote:
> On Tue, 9 Feb 2021 13:52:29 -0800 Ira Weiny wrote:
>
> > >
> > > Let's please queue this up separately.
> >
> > Ok can I retain your Ack on the move part of the patch?
>
> I mis
Question:
Since when have Mute Swans been counted anywhere in Colorado?
Ira Sanders
On Tue, Feb 9, 2021, 4:23 PM Cinnamon Bergeron
wrote:
> I saw the Broadmoor Mute Swans years ago and have never reported them on
> eBird. I have been seeing so many report them lately and have been t
t;
> (Although I expect VM_BUG_ON() would be better - will give us sufficient
> coverage without the overall impact.)
I'm ok with VM_BUG_ON()
>
> Let's please queue this up separately.
Ok can I retain your Ack on the move part of the patch? Note that it does
change kmap_atomic() to kmap_local_page() currently.
Would you prefer a separate change for that as well?
Ira
PS really CC'ing Matthew now...
On Tue, Feb 09, 2021 at 11:09:31AM -0800, Andrew Morton wrote:
> On Tue, 9 Feb 2021 16:11:23 +0100 David Sterba wrote:
>
> > On Fri, Feb 05, 2021 at 03:23:00PM -0800, ira.we...@intel.com wrote:
> > > From: Ira Weiny
> > >
> > > There are many places
On Tue, Feb 09, 2021 at 04:11:23PM +0100, David Sterba wrote:
> On Fri, Feb 05, 2021 at 03:23:00PM -0800, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > There are many places where kmap//kunmap patterns occur. We lift
> > these various patterns to core co
of places in brd code we can use memcpy_to_page()
> and get rid the local variable, once I get some feedback I'll add those
> to the V1.
Except for the one comment I had this series look's good to me.
Reviewed-by: Ira Weiny
Thanks!
Ira
___
Linux
opy;
> page = brd_lookup_page(brd, sector);
> - if (page) {
> - src = kmap_atomic(page);
> - memcpy(dst, src, copy);
> - kunmap_atomic(src);
> - } else
> + if (page)
>
, size_t
> offset,
> size_t len)
It is an easy change and It is up to Andrew. But I thought we were making the
line length limit longer now.
Ira
> > +{
> > + char *from = kmap_local_page(page);
> > +
> > + BUG_ON(offset + le
From: Ira Weiny
The development of this patch was aided by the following coccinelle
script:
//
// SPDX-License-Identifier: GPL-2.0-only
// Find kmap/memset/kunmap pattern and replace with memset*page calls
//
// NOTE: Offsets and other expressions may be more complex than what the script
From: Ira Weiny
There are many places where kmap//kunmap patterns occur. We lift
these various patterns to core common functions and use them in the btrfs file
system. At the same time we convert those core functions to use
kmap_local_page() which is more efficient in those calls.
I think
From: Ira Weiny
Development of this patch was aided by the coccinelle script:
//
// SPDX-License-Identifier: GPL-2.0-only
// Find kmap/memcpy/kunmap pattern and replace with memcpy*page calls
//
// NOTE: Offsets and other expressions may be more complex than what the script
From: Ira Weiny
Development of this patch was aided by the following coccinelle script:
//
// SPDX-License-Identifier: GPL-2.0-only
// Find kmap/copypage/kunmap pattern and replace with copy_highpage calls
//
// NOTE: The expressions in the copy page version of this kmap pattern are
// overly
From: Ira Weiny
Working through a conversion to a call kmap_local_page() instead of
kmap() revealed many places where the pattern kmap/memcpy/kunmap
occurred.
Eric Biggers, Matthew Wilcox, Christoph Hellwig, Dan Williams, and Al
Viro all suggested putting this code into helper functions. Al
From: Ira Weiny
kmap is inefficient and we are trying to reduce the usage in the kernel.
There is no readily apparent reason why initp_page needs to be allocated
and kmap'ed() but sigstruct needs to be page aligned and token
512 byte aligned.
kmalloc() can give us this alignment but we need
On Fri, Feb 05, 2021 at 04:34:41PM +0100, David Sterba wrote:
> On Thu, Feb 04, 2021 at 07:52:36PM -0800, Ira Weiny wrote:
> > On Thu, Feb 04, 2021 at 04:26:08PM +0100, David Sterba wrote:
> > > On Wed, Feb 03, 2021 at 04:56:48PM +0100, David Sterba wrote:
> > > >
On Wed, Feb 03, 2021 at 12:45:33AM +0200, Jarkko Sakkinen wrote:
> On Tue, Feb 02, 2021 at 11:47:19AM -0800, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > kmap is inefficient and we are trying to reduce the usage in the kernel.
> > There is no readily app
On Thu, Feb 04, 2021 at 04:26:08PM +0100, David Sterba wrote:
> On Wed, Feb 03, 2021 at 04:56:48PM +0100, David Sterba wrote:
> > On Wed, Jan 27, 2021 at 10:15:03PM -0800, ira.we...@intel.com wrote:
> > > From: Ira Weiny
> > >
> > > When a qstripe is
From: Ira Weiny
In dump_user_range() there is no reason for the mapping to be global.
Use kmap_local_page() rather than kmap.
Cc: Andrew Morton
Cc: linux-kernel@vger.kernel.org
Cc: linux-fsde...@vger.kernel.org
Signed-off-by: Ira Weiny
---
fs/coredump.c | 4 ++--
1 file changed, 2 insertions
On Wed, Feb 03, 2021 at 04:08:08PM +0530, Prathu Baronia wrote:
>Hey Ira,
>I looked at your below-mentioned patch and I agree that the
>above-mentioned functions also need modification similar to
>clear_user_highpage().
>Would it be okay with you if I send y
---
>
> Malloc test timings for 100MB anon allocation:-
>
> Base data:-
> Number of iterations: 100
> Mean of allocation time: 31831 us
> std deviation: 4286 us
>
> v1 data:-
> Number of iterations: 100
> Mean of allocation time: 1819
From: Ira Weiny
kmap is inefficient and we are trying to reduce the usage in the kernel.
There is no readily apparent reason why initp_page needs to be allocated
and kmap'ed() but sigstruct needs to be page aligned and token
512 byte aligned.
kmalloc() can give us this alignment but we need
From: Ira Weiny
kmap is inefficient and we are trying to reduce the usage in the kernel.
There is no readily apparent reason why the initp_page page needs to be
allocated and kmap'ed() but sigstruct needs to be page aligned and token
512 byte aligned.
In this case page_address() can be used
Birders
Tammy and I went to Chatfield Stables and got the GCSP under the junipers
with a couple of WCSP. We also looked for the Redpoll but couldn't find
any passarines in the area.
--
Ira Sanders
Golden, CO
"My mind is a raging torrent flooded with rivulets of thought casc
Title: Re: More Steam Boiler Problems
Hello winnipegger65,
Sunday, January 31, 2021, 4:12:39 PM, you wrote:
Thanks as always for your thoughts Ira,
If it's really bouncing around then it would seem to follow there are bad contacts in the pressurestat. If you jumper the supply and steam
there?
Do you own a voltmeter or a neon test light?
-- Ira
--
You received this message because you are subscribed to the Google Groups "Brewtus" group.
To unsubscribe from this group and stop receiving emails from it, send an email to brewtus+unsubscr...@googlegroups.com.
To view this
Bill
This posted at 8:14 am Sunday morning. When did you really post it?
Ira Sanders
On Sun, Jan 31, 2021, 8:14 AM Bill Schreitz wrote:
> I am planning to go to the Pawnee National Grasslands this Sunday the
> 31thfor the day to look for the elusive Sharp-tailed Grouse that has been
From: Ira Weiny
There is no reason to alloc a page and kmap it to store this temporary
data from the user. This is especially true when we are trying to
remove kmap usages. Also placing the token pointer 1/2 way into the
page is fragile.
Replace this allocation with two kzalloc()'s which also
From: Ira Weiny
When a qstripe is required an extra page is allocated and mapped. There
were 3 problems.
1) There is no reason to map the qstripe page more than 1 time if the
number of bits set in rbio->dbitmap is greater than one.
2) There is no reason to map the parity page and un
Hi there,
I am looking for this poster for my daughter.YOUR NAME
It is a Japanese Anime film.
Please email prices and condition.
Thanks,
Ira
Visit the MoPo Mailing List Web Site at www.filmfan.com
it in
the branches, it turned out to be a WW Dove. It changed position and moved
deeper into the branches but stayed in the trees in my neighbors yard.
This is the 2nd time I've had a WWDO in the yard. The 1st time was years
ago and only for 1 day.
--
Ira Sanders
Golden, CO
"My mind is a r
Birders
I spent 2 1/2 hours looking for the WWCR this morning with no luck.
--
Ira Sanders
Golden, CO
"My mind is a raging torrent flooded with rivulets of thought cascading
into a waterfall of creative alternatives."
--
You received this message because you are subscribed to the Goo
601 - 700 of 13057 matches
Mail list logo
