On Thu, Jun 13, 2019 at 11:42 AM Qian Cai wrote:
>
> On Wed, 2019-06-12 at 12:37 -0700, Dan Williams wrote:
> > On Wed, Jun 12, 2019 at 12:16 PM Qian Cai wrote:
> > >
> > > The linux-next commit "mm/sparsemem: Add helpers track active portions
> > > of
n he introduced the
> callback[1].
>
> Reviewed-by: Logan Gunthorpe
Reviewed-by: Dan Williams
Reported-by: Logan Gunthorpe :)
>
> Logan
>
> [1]
> https://lore.kernel.org/lkml/8f0cae82-130f-8a64-cfbd-fda5fd76b...@deltatee.com/T/#u
>
On Wed, Jun 12, 2019 at 2:47 PM Qian Cai wrote:
>
> On Wed, 2019-06-12 at 12:38 -0700, Dan Williams wrote:
> > On Wed, Jun 12, 2019 at 12:37 PM Dan Williams
> > wrote:
> > >
> > > On Wed, Jun 12, 2019 at 12:16 PM Qian Cai wrote:
> > > >
> >
On Wed, Jun 12, 2019 at 3:12 PM Ira Weiny wrote:
>
> On Wed, Jun 12, 2019 at 04:14:21PM -0300, Jason Gunthorpe wrote:
> > On Wed, Jun 12, 2019 at 02:09:07PM +0200, Jan Kara wrote:
> > > On Wed 12-06-19 08:47:21, Jason Gunthorpe wrote:
> > > > On Wed, Jun 12, 2019 at 12:29:17PM +0200, Jan Kara
On Wed, Jun 12, 2019 at 2:52 PM Dan Williams wrote:
>
> On Wed, Jun 12, 2019 at 2:47 PM Qian Cai wrote:
> >
> > On Wed, 2019-06-12 at 12:38 -0700, Dan Williams wrote:
> > > On Wed, Jun 12, 2019 at 12:37 PM Dan Williams
> > > wrote:
> > > >
&
On Wed, Jun 12, 2019 at 2:47 PM Qian Cai wrote:
>
> On Wed, 2019-06-12 at 12:38 -0700, Dan Williams wrote:
> > On Wed, Jun 12, 2019 at 12:37 PM Dan Williams
> > wrote:
> > >
> > > On Wed, Jun 12, 2019 at 12:16 PM Qian Cai wrote:
> > > >
> >
On Wed, Jun 12, 2019 at 4:32 PM Ira Weiny wrote:
>
> On Wed, Jun 12, 2019 at 03:54:19PM -0700, Dan Williams wrote:
> > On Wed, Jun 12, 2019 at 3:12 PM Ira Weiny wrote:
> > >
> > > On Wed, Jun 12, 2019 at 04:14:21PM -0300, Jason Gunthorpe wrote:
> > > >
On Wed, Jun 12, 2019 at 4:32 PM Ira Weiny wrote:
>
> On Wed, Jun 12, 2019 at 03:54:19PM -0700, Dan Williams wrote:
> > On Wed, Jun 12, 2019 at 3:12 PM Ira Weiny wrote:
> > >
> > > On Wed, Jun 12, 2019 at 04:14:21PM -0300, Jason Gunthorpe wrote:
> > > >
On Thu, Jun 13, 2019 at 8:14 AM Jason Gunthorpe wrote:
>
> On Wed, Jun 12, 2019 at 06:14:46PM -0700, Dan Williams wrote:
> > > Effectively, we would need a way for an admin to close a specific file
> > > descriptor (or set of fds) which point to that file. AFAI
On Wed, Jun 12, 2019 at 12:37 PM Dan Williams wrote:
>
> On Wed, Jun 12, 2019 at 12:16 PM Qian Cai wrote:
> >
> > The linux-next commit "mm/sparsemem: Add helpers track active portions
> > of a section at boot" [1] causes a crash below when the fir
\
> pfn_valid_within(___pfn)) \
> ___page = pfn_to_page(___pfn); \
> ___page; \
Looks ok to me:
Acked-by: Dan Williams
...but why is pfn_to_online_page() a multi-line macro instead of a
static inline like all the helper routines it invokes?
On Wed, Jun 12, 2019 at 3:29 AM Jan Kara wrote:
>
> On Fri 07-06-19 07:52:13, Ira Weiny wrote:
> > On Fri, Jun 07, 2019 at 09:17:29AM -0300, Jason Gunthorpe wrote:
> > > On Fri, Jun 07, 2019 at 12:36:36PM +0200, Jan Kara wrote:
> > >
> > > > Because the pins would be invisible to sysadmin from
On Wed, Jun 12, 2019 at 5:09 AM Jan Kara wrote:
>
> On Wed 12-06-19 08:47:21, Jason Gunthorpe wrote:
> > On Wed, Jun 12, 2019 at 12:29:17PM +0200, Jan Kara wrote:
> >
> > > > > The main objection to the current ODP & DAX solution is that very
> > > > > little HW can actually implement it, having
On Wed, 2019-06-12 at 10:31 +0200, Arnd Bergmann wrote:
> On Tue, Jun 11, 2019 at 7:23 PM Dan Williams wrote:
> > On Tue, 2019-06-11 at 10:52 -0600, Subash Abhinov Kasiviswanathan
> > wrote:
> >
> > rmnet should handle muxing the QMAP, QoS, and aggregation and pass
&
-requisite for a follow-on fix.
Cc:
Fixes: bf9bccc14c05 ("libnvdimm: pmem label sets and namespace instantiation")
Cc: Vishal Verma
Signed-off-by: Dan Williams
---
drivers/nvdimm/bus.c | 96 --
drivers/nvdimm/nd-core.h |3 +
2 fil
")
Cc: Vishal Verma
Signed-off-by: Dan Williams
---
drivers/nvdimm/bus.c | 17 +++--
drivers/nvdimm/region_devs.c |4
2 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index dfb93228d6a7..c1d26fca9c4c 100
an
Signed-off-by: Dan Williams
---
drivers/acpi/nfit/core.c| 28
drivers/acpi/nfit/nfit.h| 24 ++
drivers/base/core.c |3 ++
drivers/nvdimm/btt_devs.c | 16 +
drivers/nvdimm/bus.c| 28 ++-
")
Cc:
Cc: Vishal Verma
Signed-off-by: Dan Williams
---
drivers/nvdimm/region.c | 22 +++---
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/nvdimm/region.c b/drivers/nvdimm/region.c
index ef46cc3a71ae..488c47ac4c4a 100644
--- a/drivers/nvdimm/regi
Signed-off-by: Dan Williams
---
drivers/nvdimm/bus.c | 25 +
1 file changed, 25 insertions(+)
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 2dca3034fee0..42713b210f51 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -547,13 +547,38 @@ EXP
does not change any behavior, but it is a pre-requisite
for follow-on fixes and therefore marked for -stable.
Cc: Greg Kroah-Hartman
Cc: "Rafael J. Wysocki"
Fixes: 4d88a97aa9e8 ("libnvdimm, nvdimm: dimm driver and base libnvdimm
device-driver...")
Cc:
Signed-off-by: Dan Wi
st.
Patch4 and patch5 address an ABBA deadlock tripped by the stress test.
These patches pass the failing stress test and the existing libnvdimm
unit tests with CONFIG_PROVE_LOCKING=y and the new "dev->lockdep_mutex"
shadow lock with no lockdep warnings.
---
Dan Williams (6)
On Tue, 2019-06-11 at 10:52 -0600, Subash Abhinov Kasiviswanathan
wrote:
> > The general plan (and I believe Daniele Palmas was working on it)
> > was
> > to eventually make qmi_wwan use rmnet rather than its internal
> > sysfs-
> > based implementation. qmi_wwan and ipa are at essentially the
On Tue, 2019-06-11 at 13:56 +0200, Arnd Bergmann wrote:
> On Tue, Jun 11, 2019 at 10:12 AM Johannes Berg
> wrote:
>
> > > As I've made clear before, my work on this has been focused on
> > > the IPA transport,
> > > and some of this higher-level LTE architecture is new to me. But
> > > it
> > >
On Fri, Jun 7, 2019 at 12:54 PM Andrew Morton wrote:
>
> On Thu, 6 Jun 2019 15:06:26 -0700 Dan Williams
> wrote:
>
> > On Thu, Jun 6, 2019 at 2:46 PM Andrew Morton
> > wrote:
> > >
> > > On Wed, 05 Jun 2019 14:58:58 -0700 Dan Williams
> > &g
/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c221c0b0308f
[5]: http://patchwork.ozlabs.org/cover/1096737/
---
Dan Williams (10):
acpi/numa: Establish a new drivers/acpi/numa/ directory
acpi/numa/hmat: Skip publishing target info for nodes with no online
memory
efi: Enumerat
On Fri, Jun 7, 2019 at 1:34 AM Oscar Salvador wrote:
>
> On Wed, Jun 05, 2019 at 02:58:42PM -0700, Dan Williams wrote:
> > The libnvdimm sub-system has suffered a series of hacks and broken
> > workarounds for the memory-hotplug implementation's awkward
> > section-ali
On Wed, Jun 5, 2019 at 9:22 AM Goldwyn Rodrigues wrote:
>
> Hi Dan/Jerome,
>
> On 12:20 14/02, Dan Williams wrote:
> > On Thu, Feb 14, 2019 at 12:09 PM Matthew Wilcox wrote:
> > >
> > > On Thu, Feb 14, 2019 at 11:31:24AM -0800, Dan Williams wrote:
> > &
On Thu, Jun 6, 2019 at 2:46 PM Andrew Morton wrote:
>
> On Wed, 05 Jun 2019 14:58:58 -0700 Dan Williams
> wrote:
>
> > At namespace creation time there is the potential for the "expected to
> > be zero" fields of a 'pfn' info-block to be filled with indete
On Thu, Jun 6, 2019 at 10:21 AM Oscar Salvador wrote:
>
> On Wed, Jun 05, 2019 at 02:58:37PM -0700, Dan Williams wrote:
> > Prepare the memory hot-{add,remove} paths for handling sub-section
> > ranges by plumbing the starting page frame and number of pages being
> > h
On Thu, Jun 6, 2019 at 3:42 AM Jan Kara wrote:
>
> On Wed 05-06-19 18:45:33, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > ... V1,000,000 ;-)
> >
> > Pre-requisites:
> > John Hubbard's put_user_pages() patch series.[1]
> > Jan Kara's ext4_break_layouts() fixes[2]
> >
> >
. No
intended functional changes.
Cc: Michal Hocko
Cc: Vlastimil Babka
Cc: Logan Gunthorpe
Cc: Oscar Salvador
Reviewed-by: Pavel Tatashin
Signed-off-by: Dan Williams
---
include/linux/memory_hotplug.h |5 +-
mm/memory_hotplug.c| 114 +---
mm/sparse.c
Now that the mm core supports section-unaligned hotplug of ZONE_DEVICE
memory, we no longer need to add padding at pfn/dax device creation
time. The kernel will still honor padding established by older kernels.
Reported-by: Jeff Moyer
Signed-off-by: Dan Williams
---
drivers/nvdimm/pfn.h
Given there are no more usages of is_dev_zone() outside of 'ifdef
CONFIG_ZONE_DEVICE' protection, kill off the compilation helper.
Cc: Michal Hocko
Cc: Logan Gunthorpe
Acked-by: David Hildenbrand
Reviewed-by: Oscar Salvador
Reviewed-by: Pavel Tatashin
Signed-off-by: Dan Williams
ildenbrand
Reviewed-by: Oscar Salvador
Signed-off-by: Dan Williams
---
mm/memory_hotplug.c |7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 647859a1d119..4b882c57781a 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
Explain the general mechanisms of 'ZONE_DEVICE' pages and list the users
of 'devm_memremap_pages()'.
Cc: Jonathan Corbet
Reported-by: Mike Rapoport
Signed-off-by: Dan Williams
---
Documentation/vm/memory-model.rst | 39 +
1 file changed, 39 insertions
' for pmem")
Cc:
Signed-off-by: Dan Williams
---
drivers/nvdimm/dax_devs.c |2 +-
drivers/nvdimm/pfn.h |1 +
drivers/nvdimm/pfn_devs.c | 18 +++---
3 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/nvdimm/dax_devs.c b/drivers/nvdimm/dax_devs.
parate remap attempts do not collide within a sub-section (2MB
on x86).
Cc: Michal Hocko
Cc: Toshi Kani
Cc: Jérôme Glisse
Cc: Logan Gunthorpe
Cc: Oscar Salvador
Cc: Pavel Tatashin
Signed-off-by: Dan Williams
---
kernel/memremap.c | 61 +
Gunthorpe
Cc: Oscar Salvador
Cc: Pavel Tatashin
Signed-off-by: Dan Williams
---
include/linux/memory_hotplug.h |2
mm/memory_hotplug.c|7 -
mm/page_alloc.c|2
mm/sparse.c| 225 +++-
4 files changed
rnel.org/r/155000671719.348031.2347363160141119237.st...@dwillia2-desk3.amr.corp.intel.com
[3]: https://github.com/pmem/ndctl/issues/76
[4]:
https://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm.git/log/?h=libnvdimm-pending
[5]: https://github.com/pmem/ndctl/commit/7c59b4867e1c
---
Dan Williams (12):
mm/sparsemem: Introd
are added to clarify which memmap
allocation paths are sub-section capable.
Cc: Michal Hocko
Cc: David Hildenbrand
Cc: Logan Gunthorpe
Cc: Oscar Salvador
Reviewed-by: Pavel Tatashin
Signed-off-by: Dan Williams
---
arch/x86/mm/init_64.c |4 ++-
include/linux/mm.h|4 ++-
mm/sparse
ckerras
Cc: Michael Ellerman
Signed-off-by: Dan Williams
---
arch/powerpc/include/asm/sparsemem.h |3 +
include/linux/mmzone.h | 48 +++-
mm/memory_hotplug.c | 18
mm/page_alloc.c |
Gunthorpe
Cc: Oscar Salvador
Cc: Pavel Tatashin
Tested-by: Jane Chu
Signed-off-by: Dan Williams
---
include/linux/mmzone.h | 29 -
mm/page_alloc.c|4 +++-
mm/sparse.c| 35 +++
3 files changed, 66 insertions
(), can toggle.
Cc: Michal Hocko
Cc: Vlastimil Babka
Cc: Logan Gunthorpe
Reviewed-by: Pavel Tatashin
Reviewed-by: Oscar Salvador
Signed-off-by: Dan Williams
---
mm/memory_hotplug.c | 29 -
1 file changed, 8 insertions(+), 21 deletions(-)
diff --git a/mm
On Tue, Jun 4, 2019 at 1:17 PM John Hubbard wrote:
>
> On 6/4/19 1:11 PM, Dan Williams wrote:
> > On Tue, Jun 4, 2019 at 12:48 PM John Hubbard wrote:
> >>
> >> On 6/4/19 9:48 AM, ira.we...@intel.com wrote:
> >>> From: Ira Weiny
> >>>
>
On Tue, 2019-06-04 at 22:04 +0200, Arnd Bergmann wrote:
> On Tue, Jun 4, 2019 at 5:18 PM Dan Williams wrote:
> > On Tue, 2019-06-04 at 10:13 +0200, Arnd Bergmann wrote:
> > > Can you describe what kind of multiplexing is actually going on?
> > > I'm still unclear
t; > processing and should fall to "normal" processing.
> >
> > This was found via code inspection while determining if release_pages()
> > and the new put_user_pages() could be interchangeable.[1]
> >
> > [1]
> > https://lore.kernel.org/lkml/2019052
On Mon, 2019-06-03 at 13:04 -0600, Subash Abhinov Kasiviswanathan
wrote:
> > > I can't (or won't) comment right now on whether IPA needs its own
> > > netdev for rmnet to use. The IPA endpoints used for the modem
> > > network interfaces are enabled when the netdev is opened and
> > > disabled
On Tue, 2019-06-04 at 10:13 +0200, Arnd Bergmann wrote:
> On Mon, Jun 3, 2019 at 3:32 PM Alex Elder wrote:
> > On 6/3/19 5:04 AM, Arnd Bergmann wrote:
> > > On Sat, Jun 1, 2019 at 1:59 AM Subash Abhinov Kasiviswanathan
> > >
> > > - What I'm worried about most here is the flow control handling
>
On Mon, May 13, 2019 at 6:55 AM Oscar Salvador wrote:
>
> On Mon, May 06, 2019 at 04:40:14PM -0700, Dan Williams wrote:
> >
> > +void subsection_mask_set(unsigned long *map, unsigned long pfn,
> > + unsigned long nr_pages)
> > +{
> > +
On Fri, May 3, 2019 at 5:56 AM Oscar Salvador wrote:
>
> On Wed, May 01, 2019 at 10:56:10PM -0700, Dan Williams wrote:
> > The libnvdimm sub-system has suffered a series of hacks and broken
> > workarounds for the memory-hotplug implementation's awkward
> > section-ali
On Mon, 2019-06-03 at 10:52 -0500, Alex Elder wrote:
> On 6/3/19 9:54 AM, Dan Williams wrote:
> > > To be perfectly honest, at first I thought having IPA use rmnet
> > > was a cargo cult thing like Dan suggested, because I didn't see
> > To be clear I only meant cargo-
On Fri, 2019-05-31 at 15:47 -0500, Alex Elder wrote:
> On 5/31/19 2:19 PM, Arnd Bergmann wrote:
> > On Fri, May 31, 2019 at 6:36 PM Alex Elder
> > wrote:
> > > On 5/31/19 9:58 AM, Dan Williams wrote:
> > > > On Thu, 2019-05-30 at 22:53 -0500, Alex Elder wrot
at 6:36 PM Alex Elder
> > > > wrote:
> > > > > On 5/31/19 9:58 AM, Dan Williams wrote:
> > > > > > On Thu, 2019-05-30 at 22:53 -0500, Alex Elder wrote:
> > > > > >
> > > > > > My question from the Nov 2018
On Fri, May 31, 2019 at 12:33 AM Vlastimil Babka wrote:
>
> On 2/1/19 6:15 AM, Dan Williams wrote:
> > --- a/init/Kconfig
> > +++ b/init/Kconfig
> > @@ -1714,6 +1714,29 @@ config SLAB_FREELIST_HARDENED
> > sacrifies to harden the kernel slab allocator again
On Thu, 2019-05-30 at 22:53 -0500, Alex Elder wrote:
> This series presents the driver for the Qualcomm IP Accelerator
> (IPA).
>
> This is version 2 of the series. This version has addressed almost
> all of the feedback received in the first version:
>
>
On Mon, May 13, 2019 at 12:22 PM Logan Gunthorpe wrote:
>
>
>
> On 2019-05-08 11:05 a.m., Logan Gunthorpe wrote:
> >
> >
> > On 2019-05-07 5:55 p.m., Dan Williams wrote:
> >> Changes since v1 [1]:
> >> - Fix a NULL-pointer deref crash in pci_p2pdma_
)
libnvdimm fixes v5.2-rc2
- Fix a regression that disabled device-mapper dax support
- Remove unnecessary hardened-user-copy overhead (>30%) for dax
read(2)/write(2).
- Fix some compilation warnings.
----
Dan Williams
On Thu, May 23, 2019 at 8:58 PM Dan Williams wrote:
>
> On Thu, May 23, 2019 at 3:37 PM wrote:
> >
> > From: Ira Weiny
> >
> > Device pages can be more than type MEMORY_DEVICE_PUBLIC.
> >
> > Handle all device pages within release_pages()
> &
On Fri, May 24, 2019 at 9:07 AM Larry Bassel wrote:
> On 14 May 19 16:01, Kirill A. Shutemov wrote:
> > On Thu, May 09, 2019 at 09:05:33AM -0700, Larry Bassel wrote:
[..]
> > > diff --git a/mm/memory.c b/mm/memory.c
> > > index f7d962d..4c1814c 100644
> > > --- a/mm/memory.c
> > > +++
On Fri, May 24, 2019 at 8:35 AM Ira Weiny wrote:
>
> On Thu, May 23, 2019 at 08:58:12PM -0700, Dan Williams wrote:
> > On Thu, May 23, 2019 at 3:37 PM wrote:
> > >
> > > From: Ira Weiny
> > >
> > > Device pages can be more than type MEMORY_DE
new put_user_pages() could be interchangeable.
>
> Cc: Jérôme Glisse
> Cc: Dan Williams
> Cc: Michal Hocko
> Cc: John Hubbard
> Signed-off-by: Ira Weiny
> ---
> mm/swap.c | 7 +++
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/mm/swap.c b/mm/swap.c
l the
next reboot" since there is no guarantee it will work then either and
the surefire mechanism to recover the memory from the kmem driver is
to not add it in the first place. Perhaps also print out the error
code in case it might specify a finer grained reason the memory is
pinned.
Other than that you can add
Reviewed-by: Dan Williams
...as it looks like Andrew will take this through -mm.
On Mon, May 20, 2019 at 12:27 PM Jerome Glisse wrote:
>
> On Mon, May 20, 2019 at 11:07:38AM +0530, Anshuman Khandual wrote:
> > On 05/18/2019 03:20 AM, Andrew Morton wrote:
> > > On Fri, 17 May 2019 16:08:34 +0530 Anshuman Khandual
> > > wrote:
> > >
> > >> The presence of struct page does not
quot;)
Cc:
Cc: Jeff Moyer
Cc: Ingo Molnar
Cc: Christoph Hellwig
Cc: Al Viro
Cc: Thomas Gleixner
Cc: Matthew Wilcox
Reported-and-tested-by: Jeff Smits
Acked-by: Kees Cook
Acked-by: Jan Kara
Signed-off-by: Dan Williams
---
Changes since v1 [1]:
* Update the changelog to clarify which check
On Sun, May 19, 2019 at 10:37 PM Anshuman Khandual
wrote:
>
> On 05/18/2019 03:20 AM, Andrew Morton wrote:
> > On Fri, 17 May 2019 16:08:34 +0530 Anshuman Khandual
> > wrote:
> >
> >> The presence of struct page does not guarantee linear mapping for the pfn
> >> physical range. Device private
On Thu, May 16, 2019 at 10:37 PM Vaibhav Jain wrote:
>
> Dan Williams writes:
>
> > On Wed, May 15, 2019 at 10:55 PM Vaibhav Jain wrote:
> >>
> >> Presently __bdev_dax_supported() checks if first sector of last
> >> page ( last_page ) on the blo
On Mon, May 20, 2019 at 12:52 AM Jan Kara wrote:
>
> On Sat 18-05-19 21:46:03, Dan Williams wrote:
> > On Fri, May 17, 2019 at 12:25 PM Kees Cook wrote:
> > > On Fri, May 17, 2019 at 10:28:48AM -0700, Dan Williams wrote:
> > > > It seems dax_iomap_actor() is
On Fri, May 17, 2019 at 12:25 PM Kees Cook wrote:
> On Fri, May 17, 2019 at 10:28:48AM -0700, Dan Williams wrote:
> > It seems dax_iomap_actor() is not a path where we'd be worried about
> > needing hardened user copy checks.
>
> I would agree: I think the proposed patch ma
On Fri, May 17, 2019 at 8:57 AM Kees Cook wrote:
>
> On Fri, May 17, 2019 at 08:08:27AM -0700, Dan Williams wrote:
> > As far as I can see it's mostly check_heap_object() that is the
> > problem, so I'm open to finding a way to just bypass that sub-routine.
> > However,
On Fri, May 17, 2019 at 1:47 AM Jan Kara wrote:
>
> Let's add Kees to CC for usercopy expertise...
>
> On Thu 16-05-19 17:33:38, Dan Williams wrote:
> > Jeff discovered that performance improves from ~375K iops to ~519K iops
> > on a simple psync-write fio workload
ot;x86, uaccess: introduce copy_from_iter_flushcache...")
Cc: Jan Kara
Cc:
Cc: Jeff Moyer
Cc: Ingo Molnar
Cc: Christoph Hellwig
Cc: Al Viro
Cc: Thomas Gleixner
Cc: Matthew Wilcox
Reported-and-tested-by: Jeff Smits
Signed-off-by: Dan Williams
---
drivers/nvdimm/pmem.c |9 +++--
1 file c
On Thu, May 16, 2019 at 9:45 AM Jane Chu wrote:
>
> Hi,
>
> I'm able to reproduce the panic below by running two sets of ndctl
> commands that actually serve legitimate purpose in parallel (unlike
> the brute force experiment earlier), each set in a indefinite loop.
> This time it takes about an
On Thu, May 16, 2019 at 9:05 AM Qian Cai wrote:
>
> Several places (dimm_devs.c, core.c etc) include label.h but only
> label.c uses NSINDEX_SIGNATURE, so move its definition to label.c
> instead.
>
> In file included from drivers/nvdimm/dimm_devs.c:23:
> drivers/nvdimm/label.h:41:19: warning:
On Wed, May 15, 2019 at 10:55 PM Vaibhav Jain wrote:
>
> Presently __bdev_dax_supported() checks if first sector of last
> page ( last_page ) on the block device is aligned to page
> boundary. However the code to compute 'last_page' assumes that there
> are 8 sectors/page assuming a 4K page-size.
: Allow to include DEV_DAX_PMEM as builtin
Dan Williams (1):
libnvdimm/namespace: Fix label tracking error
Vishal Verma (2):
dax/pmem: Fix whitespace in dax_pmem
tools/testing/nvdimm: add watermarks for dax_pmem* modules
drivers/dax/Kconfig | 3
On Wed, May 15, 2019 at 5:25 PM Verma, Vishal L
wrote:
>
> On Wed, 2019-05-15 at 16:25 -0700, Dan Williams wrote:
> >
> > > diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
> > > index 4671776f5623..9f02a99cfac0 100644
> > > --- a/drivers/nvdimm
On Wed, May 15, 2019 at 11:12 AM Pavel Tatashin
wrote:
>
> > Hi Pavel,
> >
> > I am working on adding this sort of a workflow into a new daxctl command
> > (daxctl-reconfigure-device)- this will allow changing the 'mode' of a
> > dax device to kmem, online the resulting memory, and with your
On Wed, May 15, 2019 at 12:28 PM Vivek Goyal wrote:
>
> From: Stefan Hajnoczi
>
> Although struct dax_device itself is not tied to a block device, some
> DAX code assumes there is a block device. Make block devices optional
> by allowing bdev to be NULL in commonly used DAX APIs.
>
> When there
On Tue, May 14, 2019 at 8:08 AM Qian Cai wrote:
>
> Several places (dimm_devs.c, core.c etc) include label.h but only
> label.c uses NSINDEX_SIGNATURE, so move its definition to label.c
> instead.
> In file included from drivers/nvdimm/dimm_devs.c:23:
> drivers/nvdimm/label.h:41:19: warning:
[ add Mike and dm-devel ]
Mike, any concerns with the below addition to the device-mapper-dax
implementation?
On Tue, May 14, 2019 at 7:58 AM Pankaj Gupta wrote:
>
> This patch sets dax device 'DAXDEV_SYNC' flag if all the target
> devices of device mapper support synchrononous DAX. If device
On Mon, Mar 11, 2019 at 5:08 PM Linus Torvalds
wrote:
>
> On Mon, Mar 11, 2019 at 8:37 AM Dan Williams wrote:
> >
> > Another feature the userspace tooling can support for the PMEM as RAM
> > case is the ability to complete an Address Range Scrub of the range
> >
On Tue, May 14, 2019 at 12:12 PM Greg Kroah-Hartman
wrote:
>
> On Tue, May 07, 2019 at 04:56:05PM -0700, Dan Williams wrote:
> > The devm_add_action() facility allows a resource allocation routine to
> > add custom devm semantics. One such user is devm_memremap_pages().
&g
On Tue, May 14, 2019 at 11:53 AM Jane Chu wrote:
>
> On 5/13/2019 12:22 PM, Logan Gunthorpe wrote:
>
> On 2019-05-08 11:05 a.m., Logan Gunthorpe wrote:
>
> On 2019-05-07 5:55 p.m., Dan Williams wrote:
>
> Changes since v1 [1]:
> - Fix a NULL-pointer deref crash in
On Mon, May 13, 2019 at 2:02 PM Mike Rapoport wrote:
>
> Hi Dan,
>
> On Mon, May 06, 2019 at 04:39:26PM -0700, Dan Williams wrote:
> > Changes since v7 [1]:
>
> Sorry for jumping late
No worries, it needs to be rebased on David's "mm/memory_hotplug:
Factor out
On Fri, May 10, 2019 at 5:45 PM Pankaj Gupta wrote:
>
>
>
> > >
> > > This patch adds 'DAXDEV_SYNC' flag which is set
> > > for nd_region doing synchronous flush. This later
> > > is used to disable MAP_SYNC functionality for
> > > ext4 & xfs filesystem for devices don't support
> > > synchronous
On Wed, May 8, 2019 at 4:19 AM Pankaj Gupta wrote:
>
>
> Hi Dan,
>
> Thank you for the review. Please see my reply inline.
>
> >
> > Hi Pankaj,
> >
> > Some minor file placement comments below.
>
> Sure.
>
> >
> > On Thu, Apr 25, 2019 at 10:02 PM Pankaj Gupta wrote:
> > >
> > > This patch adds
On Fri, May 10, 2019 at 9:32 AM Elliott, Robert (Servers)
wrote:
>
>
>
> > -Original Message-
> > From: Linux-nvdimm On Behalf Of
> > Larry Bassel
> > Sent: Thursday, May 09, 2019 11:06 AM
> > Subject: [PATCH, RFC 1/2] Add config option to enable FS/DAX PMD
> > sharing
> >
> > If
Ma
Cc: Aneesh Kumar K.V
Cc: Chandan Rajendra
Cc: Jan Kara
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: Souptick Joarder
Signed-off-by: Dan Williams
---
drivers/dax/device.c|6 ++
fs/dax.c|6 ++
include/linux/huge_mm.h |6 ++
mm/huge_me
In preparation for fixing a race between devm_memremap_pages_release()
and the final put of a page from the device-page-map, allocate a
percpu-ref per p2pdma resource mapping.
Cc: Logan Gunthorpe
Cc: Bjorn Helgaas
Cc: Christoph Hellwig
Reviewed-by: Ira Weiny
Signed-off-by: Dan Williams
Use the new devm_relase_action() facility to allow
devm_memremap_pages_release() to be manually triggered.
Cc: Logan Gunthorpe
Cc: Bjorn Helgaas
Cc: Christoph Hellwig
Reviewed-by: Ira Weiny
Signed-off-by: Dan Williams
---
include/linux/memremap.h |6 ++
kernel/memremap.c
_pages")
Cc: Bjorn Helgaas
Cc: "Jérôme Glisse"
Cc: Christoph Hellwig
Reviewed-by: Ira Weiny
Signed-off-by: Dan Williams
---
drivers/dax/device.c | 13 +++--
drivers/nvdimm/pmem.c | 17 +
drivers/pci/p2pdma.c | 17
On Tue, May 7, 2019 at 11:38 AM David Hildenbrand wrote:
>
> Only memory to be added to the buddy and to be onlined/offlined by
> user space using memory block devices needs (and should have!) memory
> block devices.
>
> Factor out creation of memory block devices Create all devices after
>
On Tue, May 7, 2019 at 11:38 AM David Hildenbrand wrote:
>
> No longer needed, the callers of arch_add_memory() can handle this
> manually.
>
> Cc: Andrew Morton
> Cc: David Hildenbrand
> Cc: Michal Hocko
> Cc: Oscar Salvador
> Cc: Pavel Tatashin
> Cc: Wei Yang
> Cc: Joonsoo Kim
> Cc: Qian
are added to clarify which memmap
allocation paths are sub-section capable.
Cc: Michal Hocko
Cc: David Hildenbrand
Cc: Logan Gunthorpe
Cc: Oscar Salvador
Reviewed-by: Pavel Tatashin
Signed-off-by: Dan Williams
---
arch/x86/mm/init_64.c |4 ++-
include/linux/mm.h|4 ++-
mm/sparse
ckerras
Cc: Michael Ellerman
Signed-off-by: Dan Williams
---
arch/powerpc/include/asm/sparsemem.h |3 +
include/linux/mmzone.h | 48 +++-
mm/memory_hotplug.c | 18
mm/page_alloc.c |
On Mon, May 6, 2019 at 10:57 AM Dave Hansen wrote:
>
> > -static inline void remove_memory(int nid, u64 start, u64 size) {}
> > +static inline bool remove_memory(int nid, u64 start, u64 size)
> > +{
> > + return -EBUSY;
> > +}
>
> This seems like an appropriate place for a WARN_ONCE(), if
On Thu, May 2, 2019 at 3:46 PM Pavel Tatashin wrote:
>
> Hi Dan,
>
> How do you test these patches? Do you have any instructions?
Yes, I briefly mentioned this in the cover letter, but here is the
test I am using:
>
> I see for example that check_hotplug_memory_range() still enforces
>
t(vma, addr, page, flags, pmdp);
> }
> -EXPORT_SYMBOL(device_private_entry_fault);
> #endif /* CONFIG_DEVICE_PRIVATE */
Looks good to me.
Reviewed-by: Dan Williams
On Thu, Apr 25, 2019 at 1:05 AM Du, Fan wrote:
>
>
>
> >-Original Message-
> >From: owner-linux...@kvack.org [mailto:owner-linux...@kvack.org] On
> >Behalf Of Michal Hocko
> >Sent: Thursday, April 25, 2019 3:54 PM
> >To: Du, Fan
> >Cc: a...@linux-foundation.org; Wu, Fengguang ;
>
On Tue, Apr 23, 2019 at 2:21 PM David Hildenbrand wrote:
>
> On 17.04.19 20:39, Dan Williams wrote:
> > Teach the arch_remove_memory() path to consult the same 'struct
> > mhp_restrictions' context as was specified at arch_add_memory() time.
> >
> > No functional
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