[PATCH v2 4/5] acpi_nfit, libnvdimm: Add support for clear poison list and bad blocks

Providing mechanism to clear poison list via the ndctl ND_CMD_CLEAR_ERROR call. We will update the poison list and also the badblocks at region level if the region is in dax mode or in pmem mode and not active. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/acpi/nfit/

[PATCH v2 3/5] acpi: cleanup acpi_nfit_ctl calling xlat_status

Make sure that xlat_status is unconditionally called. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/acpi/nfit/core.c | 15 +++ 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 662036b..e

[PATCH v2 2/5] libnvdimm: Add resource sysfs attrib to nd region

Adding sysfs attribute in order to export the physical address of the ND region. This is for supporting of user app poison clear via device dax. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Reviewed-by: Johannes Thumshirn <jthumsh...@suse.de> --- drivers/nvdimm/region_d

[PATCH v2 1/5] libnvdimm: Add mechanism to publish badblocks at nd region level

badblocks sysfs file will be export at nd_region level. When nvdimm event notifier happens for NVDIMM_REVALIATE_POISON, the badblocks in the nd region will be updated. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Reviewed-by: Johannes Thumshirn <jthumsh...@suse.de> --- drivers

[PATCH v2 0/5] libnvdimm: Adding clear poison path for device DAX

badblocks. v2: Addressed formatting comments by Johannes. --- Dave Jiang (5): libnvdimm: Add mechanism to publish badblocks at nd region level libnvdimm: Add resource sysfs attrib to nd region acpi: cleanup acpi_nfit_ctl calling xlat_status acpi_nfit, libnvdimm: Add support

Re: [PATCH 4/5] acpi_nfit, libnvdimm: Add support for clear poison list and bad blocks

On 03/07/2017 02:30 AM, Johannes Thumshirn wrote: > On 03/06/2017 09:32 PM, Dave Jiang wrote: >> Providing mechanism to clear poison list via the ndctl ND_CMD_CLEAR_ERROR >> call. We will update the poison list and also the badblocks at region level >> if the region is in dax

[PATCH] ndctl: add 1G dev-dax unit test

Adding unit test for device DAX 1G PUD support. This is patterned after device-dax.c that tests the PMD support. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- test/Makefile.am | 17 +++ test/device-dax-1g.c | 336 ++ 2 files c

[PATCH 3/4] ndctl/test: remove the bus check functions

With the addition of support to clear poison list and badblocks on a per region level, the bus checking functions will be moved to devdax-error test to test directly on device dax. The command issued to active pmem are expected to fail. Signed-off-by: Dave Jiang <dave.ji...@intel.com> ---

[PATCH 1/4] ndctl: add function to acquire region resource

Adding helper function to acquire the physical base address of the ND region. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- ndctl/lib/libndctl.c | 21 + ndctl/lib/libndctl.sym |1 + ndctl/libndctl.h.in|1 + 3 files changed, 23 insertions(+) diff

[PATCH 0/5] Adding clear poison path for device DAX

badblocks. --- Dave Jiang (5): libnvdimm: Add mechanism to publish badblocks at nd region level libnvdimm: Add resource sysfs attrib to nd region acpi: cleanup acpi_nfit_ctl calling xlat_status acpi_nfit, libnvdimm: Add support for clear poison list and bad blocks

[PATCH 2/5] libnvdimm: Add resource sysfs attrib to nd region

Adding sysfs attribute in order to export the physical address of the ND region. This is for supporting of user app poison clear via device dax. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/region_devs.c | 13 + 1 file changed, 13 insertions(+) diff

[PATCH 1/5] libnvdimm: Add mechanism to publish badblocks at nd region level

badblocks sysfs file will be export at nd_region level. When nvdimm event notifier happens for NVDIMM_REVALIATE_POISON, the badblocks in the nd region will be updated. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/nd.h |1 + drivers/nvdimm/region.c

[PATCH 5/5] libnvdimm: providing dax support for nvdimm testing

Adding dax support to the nvdimm testing in tools/testing/nvdimm. The memory allocated by the tool is via vmalloc and non-contiguous. Overriding pgoff_to_phys() call to support the vmalloc memory. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax-private.h

[PATCH 4/5] acpi_nfit, libnvdimm: Add support for clear poison list and bad blocks

Providing mechanism to clear poison list via the ndctl ND_CMD_CLEAR_ERROR call. We will update the poison list and also the badblocks at region level if the region is in dax mode or in pmem mode and not active. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/acpi/nfit/

[PATCH 3/5] acpi: cleanup acpi_nfit_ctl calling xlat_status

Make sure that xlat_status is unconditionally called. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/acpi/nfit/core.c | 15 +++ 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 7361d00..9

[PATCH] fs, dax: fix build warning for !CONFIG_FS_DAX_PMD case for dax_iomap_pmd_fault

by commit a2d581675d48 ("mm,fs,dax: change ->pmd_fault to ->huge_fault") which missed fixing up the !CONFIG_FS_DAX_PMD case. Reported-by: Stephen Rothwell <s...@canb.auug.org.au> Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- fs/dax.c |3 ++- 1 file changed,

Re: [PATCH] mm,x86: fix SMP x86 32bit build for native_pud_clear()

On 02/16/2017 08:42 AM, Dave Hansen wrote: > On 02/15/2017 12:31 PM, Dave Jiang wrote: >> The fix introduced by e4decc90 to fix the UP case for 32bit x86, however >> that broke the SMP case that was working previously. Add ifdef so the dummy >> function only show up f

[PATCH] mm,x86: fix SMP x86 32bit build for native_pud_clear()

<alexander.kaps...@gmail.com> Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- arch/x86/include/asm/pgtable-3level.h |2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h index 50d35e3..8f50fb3 100644 --

Re: [PATCH] mm: replace FAULT_FLAG_SIZE with parameter to huge_fault

the code has a mix of partial from before and after the patch. I'm rather confused about it > > url: > https://github.com/0day-ci/linux/commits/Dave-Jiang/mm-replace-FAULT_FLAG_SIZE-with-parameter-to-huge_fault/20170204-053548 > base: git://git.cmpxchg.org/linux-mmotm.git ma

[PATCH] mm: replace FAULT_FLAG_SIZE with parameter to huge_fault

an input parameter to huge_fault that indicates the size of the page entry. This makes the code easier to trace and should avoid the issues we see with the fault flags where removal of the flag was necessary in the fallback paths. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drive

Re: [PATCH v2 1/3] mm,fs,dax: Change ->pmd_fault to ->huge_fault

On 01/30/2017 04:43 PM, Ross Zwisler wrote: > On Thu, Jan 26, 2017 at 10:09:47AM -0700, Dave Jiang wrote: >> In preparation for adding the ability to handle PUD pages, convert >> ->pmd_fault to ->huge_fault. The vm_fault structure is extended to >> include a union

Re: [PATCH v2 2/3] mm, x86: Add support for PUD-sized transparent hugepages

On 01/26/2017 03:38 PM, Andrew Morton wrote: > On Thu, 26 Jan 2017 10:09:53 -0700 Dave Jiang <dave.ji...@intel.com> wrote: > >> The current transparent hugepage code only supports PMDs. This patch >> adds support for transparent use of PUDs with DAX. It does not include

[PATCH v2 1/3] mm,fs,dax: Change ->pmd_fault to ->huge_fault

. [DJ: Forward ported to 4.10-rc] Signed-off-by: Matthew Wilcox <mawil...@microsoft.com> Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c | 34 +- fs/dax.c| 43 ++- fs/ext2/

[PATCH v2 3/3] dax: Support for transparent PUD pages for device DAX

Adding transparent huge PUD pages support for device DAX by adding a pud_fault handler. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c | 48 1 file changed, 48 insertions(+) diff --git a/drivers/dax/dax.c b/drive

[PATCH v2 0/3] 1G transparent hugepage support for device dax

will keep increasing. An argument can be made to convert the applications from process model to thread model, but in the real world that may not be always practical. Hopefully this helps explain the use case where this is valuable. v2: Fixup build issues from 0-day build. --- Dave Jiang (1

[PATCH] dax: put back __GFP_IO in the dax fault handler

__GFP_IO got accidentally dropped in the dax fault handler during the vmf parameter conversion. Putting it back. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- fs/dax.c |2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/dax.c b/fs/dax.c index 2e90f7a..20e9db8 100644 --- a/fs

[PATCH] dax: pgoff in fs DAX trace needs to be corrected

With only vmf being passed in, the pgoff in vmf that is passed in is for the PTE and not the PMD. Fix up so the pgoff is corrected. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- include/trace/events/fs_dax.h |3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/i

[PATCH 3/3] dax: Support for transparent PUD pages for device DAX

Adding transparent huge PUD pages support for device DAX by adding a pud_fault handler. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c | 48 1 file changed, 48 insertions(+) diff --git a/drivers/dax/dax.c b/drive

[PATCH 1/3] mm,fs,dax: Change ->pmd_fault to ->huge_fault

. [DJ: Forward ported to 4.10-rc] Signed-off-by: Matthew Wilcox <mawil...@microsoft.com> Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c | 34 +- fs/dax.c| 43 ++- fs/ext2/

[PATCH 2/3] mm, x86: Add support for PUD-sized transparent hugepages

f locking the PUD before calling ->pud_walk, so handlers do not need to worry whether the PUD is stable. [DJ: Forward ported to 4.10-rc] Signed-off-by: Matthew Wilcox <mawil...@microsoft.com> Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- arch/Kconfig

[PATCH 0/3] 1G transparent hugepage support for device dax

code to support device DAX. --- Dave Jiang (1): dax: Support for transparent PUD pages for device DAX Matthew Wilcox (2): mm,fs,dax: Change ->pmd_fault to ->huge_fault mm,x86: Add support for PUD-sized transparent hugepages arch/Kconfig |3

[PATCH v2] mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to take a vma and vmf parameter when the vma already resides in vmf. Remove the vma parameter to simplify things. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Reviewed-by: Ross Zwisler <ross.zwis.

[PATCH v7 2/2] mm, dax: move pmd_fault() to take only vmf parameter

pmd_fault() and related functions really only need the vmf parameter since the additional parameters are all included in the vmf struct. Removing additional parameter and simplify pmd_fault() and friends. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Reviewed-by: Ross Zwisler <

[PATCH v7 1/2] mm, dax: make pmd_fault() and friends to be the same as fault()

Instead of passing in multiple parameters in the pmd_fault() handler, a vmf can be passed in just like a fault() handler. This will simplify code and remove the need for the actual pmd fault handlers to allocate a vmf. Related functions are also modified to do the same. Signed-off-by: Dave Jiang

Re: linux-next 0112 tree breaks fs DAX

On 01/17/2017 11:13 AM, Dave Jiang wrote: > > > On 01/17/2017 09:05 AM, Dave Jiang wrote: >> On 01/16/2017 03:45 AM, Stephen Rothwell wrote: >>> Hi Xiong, >>> >>> Just cc'ing Andrew. >>> >>> On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Z

Re: linux-next 0112 tree breaks fs DAX

On 01/17/2017 09:05 AM, Dave Jiang wrote: > On 01/16/2017 03:45 AM, Stephen Rothwell wrote: >> Hi Xiong, >> >> Just cc'ing Andrew. >> >> On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Zhou <xz...@redhat.com> wrote: >>> >>> On Fri, Ja

Re: linux-next 0112 tree breaks fs DAX

On 01/16/2017 03:45 AM, Stephen Rothwell wrote: > Hi Xiong, > > Just cc'ing Andrew. > > On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Zhou wrote: >> >> On Fri, Jan 13, 2017 at 06:16:41PM +0800, Xiong Zhou wrote: >>> Hi, >>> >>> These cases "hang" when testing with -o dax mount

[PATCH v7] x86: fix kaslr and memmap collision

. The nn@ss ranges will be skipped by the mem_avoid set since it indicates memory useable. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Acked-by: Kees Cook <keesc...@chromium.org> Acked-by: Baoquan He <b...@redhat.com> --- arch/x86/boot/boot.h |1 arch/x

Re: [PATCH v6] x86: fix kaslr and memmap collision

On 01/11/2017 05:00 AM, Thomas Gleixner wrote: > On Tue, 10 Jan 2017, Dave Jiang wrote: >> +unsigned long simple_strtoul(const char *cp, char **endp, unsigned int >> base); >> +long simple_strtol(const char *cp, char **endp, unsigned int base); > &g

[PATCH v4] libnvdimm: clear poison in mem map metadata

Clearing out the poison in the metadata block of the namespace before we use it. Range from start + 8k to pfn_sb->dataoff. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/pfn_devs.c | 25 + 1 file changed, 25 insertions(+) diff --git

Re: [PATCH v5 1/2] mm, dax: make pmd_fault() and friends to be the same as fault()

On 12/19/2016 11:27 AM, Dave Jiang wrote: > Instead of passing in multiple parameters in the pmd_fault() handler, > a vmf can be passed in just like a fault() handler. This will simplify > code and remove the need for the actual pmd fault handlers to allocate a > vmf. Related functi

[PATCH v5] x86: fix kaslr and memmap collision

. The nn@ss ranges will be skipped by the mem_avoid set since it indicates memory useable. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- v2: Addressing comments from Ingo. - Handle entire list of memmaps v3: Fix 32bit build issue v4: Addressing comments from Baoquan - Not exclude nn@ss

Re: [PATCH v4] x86: fix kaslr and memmap collision

On 01/03/2017 07:37 PM, Baoquan He wrote: > Hi Dave, > > I have several concerns, please see the inline comments. > > On 01/03/17 at 01:48pm, Dave Jiang wrote: >> CONFIG_RANDOMIZE_BASE relocates the kernel to a random base address. >> However it does not take into ac

[PATCH v2 3/3] dev-dax: add fallocate support to clear poison

Adding fallocate support to device-dax. This implements FALLOC_FL_PUNCH_HOLE in order to allow clearing of badblocks/poison list. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax-private.h |1 + drivers/dax/dax.c | 24 +++- drivers/dax

[PATCH v5 2/2] mm, dax: move pmd_fault() to take only vmf parameter

pmd_fault() and related functions really only need the vmf parameter since the additional parameters are all included in the vmf struct. Removing additional parameter and simplify pmd_fault() and friends. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Reviewed-by: Ross Zwisler <

[PATCH v5 1/2] mm, dax: make pmd_fault() and friends to be the same as fault()

Instead of passing in multiple parameters in the pmd_fault() handler, a vmf can be passed in just like a fault() handler. This will simplify code and remove the need for the actual pmd fault handlers to allocate a vmf. Related functions are also modified to do the same. Signed-off-by: Dave Jiang

Re: [PATCH v2] x86: fix kaslr and memmap collision

On 11/29/2016 12:26 PM, Dave Jiang wrote: > CONFIG_RANDOMIZE_BASE relocates the kernel to a random base address. > However it does not take into account the memmap= parameter passed in from > the kernel cmdline. This results in the kernel sometimes being put in > the middle of the

[PATCH v3 3/3] mm, dax: move pmd_fault() to take only vmf parameter

pmd_fault() and related functions really only need the vmf parameter since the additional parameters are all included in the vmf struct. Removing additional parameter and simplify pmd_fault() and friends. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c

Re: [PATCH 1/3] dev-dax: add support to display badblocks in sysfs for dev-dax

On 12/14/2016 02:12 PM, Jeff Moyer wrote: > Dave Jiang <dave.ji...@intel.com> writes: > >> Adding support to show badblocks in the pmem region that's provided >> by the poison_list. This should show up in >> /sys/class/dax/daxN.N/badblocks as read only. Current

Re: [PATCH 1/2] mm, dax: make pmd_fault() and friends to be the same as fault()

On 12/13/2016 05:15 AM, Jan Kara wrote: > On Thu 08-12-16 14:34:21, Dave Jiang wrote: >> Instead of passing in multiple parameters in the pmd_fault() handler, >> a vmf can be passed in just like a fault() handler. This will simplify >> code and remove the need for the actu

[PATCH 2/3] nvdimm-testing: providing dax support for nvdimm testing

Adding dax support to the nvdimm testing in tools/testing/nvdimm. The memory allocated by the tool is via vmalloc and non-contiguous. Overriding pgoff_to_phys() call to support the vmalloc memory. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax-private.h

[PATCH 3/3] dev-dax: add fallocate support to clear poison

Adding fallocate support to device-dax. This implements FALLOC_FL_PUNCH_HOLE in order to allow clearing of badblocks/poison list. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax-private.h |1 + drivers/dax/dax.c | 28 +-- drivers/dax

[PATCH 1/3] dev-dax: add support to display badblocks in sysfs for dev-dax

. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c | 27 ++- drivers/dax/dax.h |8 +++- drivers/dax/pmem.c | 37 - 3 files changed, 65 insertions(+), 7 deletions(-) diff --git a/drivers/dax/d

[PATCH 2 2/2] ndctl: Add test for device-dax error testing path

support to clear the errors. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- test/Makefile.am |8 ++- test/device-dax-errors.c | 130 + test/device-dax-errors.sh | 52 ++ 3 files changed, 188 insertions(+), 2 del

[PATCH 2 1/2] ndctl: introduce 4k allocation support for creating namespace

-by: Dave Jiang <dave.ji...@intel.com> --- ndctl/builtin-xaction-namespace.c | 34 +++--- util/size.h |1 + 2 files changed, 32 insertions(+), 3 deletions(-) diff --git a/ndctl/builtin-xaction-namespace.c b/ndctl/builtin-xaction-names

[PATCH 1/2] mm, dax: make pmd_fault() and friends to be the same as fault()

Instead of passing in multiple parameters in the pmd_fault() handler, a vmf can be passed in just like a fault() handler. This will simplify code and remove the need for the actual pmd fault handlers to allocate a vmf. Related functions are also modified to do the same. Signed-off-by: Dave Jiang

[PATCH 2/2] mm, dax: move pmd_fault() to take only vmf parameter

pmd_fault() and relate functions really only need the vmf parameter since the additional parameters are all included in the vmf struct. Removing additional parameter and simplify pmd_fault() and friends. Signed-off-by: Dave Jiang <dave.ji...@intel.com> Reviewed-by: Ross Zwisler <

Re: [PATCH] x86: Add warning when memmap=nn!ss and CONFIG_RANDOMIZE_BASE enabled

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 11/18/2016 10:07 AM, Dan Williams wrote: > On Fri, Nov 18, 2016 at 8:47 AM, Dave Jiang <dave.ji...@intel.com> > wrote: >> -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 >> >> >> >> On 11/18/2016 0

[PATCH v2] libnvdimm: clear poison in mem map metadata

Clearing out the poison in the metadata block of the namespace before we use it. Range from start + 8k to pfn_sb->dataoff. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/pfn_devs.c | 30 ++ 1 file changed, 30 insertions(+) diff --git

Re: [PATCH] libnvdimm: clear poison in mem map metadata

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 11/17/2016 10:25 AM, Dave Jiang wrote: > On 11/17/2016 09:35 AM, Kani, Toshimitsu wrote: >> On Mon, 2016-11-14 at 17:21 -0700, Dave Jiang wrote: >>> Clearing out the poison in the metadata block of the namespace >>> b

Re: [PATCH] x86: Add warning when memmap=nn!ss and CONFIG_RANDOMIZE_BASE enabled

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 11/18/2016 04:33 AM, Thomas Gleixner wrote: > On Thu, 17 Nov 2016, Dave Jiang wrote: >> CONFIG_RANDOMIZE_BASE can place the kernel anywhere. This causes >> a problem for when memmap=nn!ss is used. This information is not >&

[PATCH] x86: Add warning when memmap=nn!ss and CONFIG_RANDOMIZE_BASE enabled

is not reliable in the presence of CONFIG_RANDOMIZE_BASE. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- Documentation/kernel-parameters.txt |5 - arch/x86/kernel/e820.c |2 ++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/Documentation/kernel-parameters.

Re: [PATCH] libnvdimm: clear poison in mem map metadata

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 11/17/2016 09:35 AM, Kani, Toshimitsu wrote: > On Mon, 2016-11-14 at 17:21 -0700, Dave Jiang wrote: >> Clearing out the poison in the metadata block of the namespace >> before we use it. Range from start + 8k to pfn_sb->dataoff.

[PATCH v3] libnvdimm: check and clear poison before writing to pmem

We need to clear any poison when we are writing to pmem. The granularity will be sector size. If it's less then we can't do anything about it barring corruption. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/claim.c | 30 ++ 1 file chang

[PATCH v2] libnvdimm: check and clear poison before writing to pmem

We need to clear any poison when we are writing to pmem. The granularity will be sector size. If it's less then we can't do anything about it barring corruption. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/claim.c | 24 +--- 1 file chang

[PATCH] libnvdimm: check and clear poison before writing to pmem

We need to clear any poison when we are writing to pmem. The granularity will be sector size. If it's less then we can't do anything about it barring corruption. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/claim.c | 20 ++-- 1 file changed, 18 inse

[PATCH] ndctl: introduce 4k allocation support for creating namespace

-by: Dave Jiang <dave.ji...@intel.com> --- ndctl/builtin-xaction-namespace.c | 22 -- util/size.h |1 + 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/ndctl/builtin-xaction-namespace.c b/ndctl/builtin-xaction-namespace.c

[PATCH v2] dev-dax: add support to display badblocks in sysfs for dev-dax

. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/dax/dax.c | 25 + drivers/dax/dax.h |8 +++- drivers/dax/pmem.c | 37 - 3 files changed, 64 insertions(+), 6 deletions(-) diff --git a/drivers/dax/d

[PATCH] nvdimm: reduce duplicated wqp flushes

Existing implemenetation writes to all the flush hint addresses for a given ND region. This is not necessary as the flushes are per imc and not per DIMM. Search the mappings and clear out the duplicates at init to avoid multiple flush to the same imc. Signed-off-by: Dave Jiang <dave

[PATCH] dm flakey: add DAX support

-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/md/dm-flakey.c | 21 - 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index 6a2e8dd..cf182a7 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-fl

Re: [PATCH] ndctl: move test/dax-errors buffer to global to avoid gcc optimization

On 09/18/2016 09:42 AM, Elliott, Robert (Persistent Memory) wrote: > > >> -Original Message----- >> From: Dave Jiang [mailto:dave.ji...@intel.com] >> Sent: Friday, September 16, 2016 12:24 PM > ... >> Subject: Re: [PATCH] ndctl: move test/dax-errors

Re: [PATCH] ndctl: move test/dax-errors buffer to global to avoid gcc optimization

On 09/15/2016 06:18 PM, Elliott, Robert (Persistent Memory) wrote: > > >> -Original Message- >> From: Linux-nvdimm [mailto:linux-nvdimm-boun...@lists.01.org] On >> Behalf Of Dave Jiang >> Sent: Thursday, September 15, 2016 5:28 PM >> To: vishal.l.ve...

Re: [PATCH] ndctl: move test/dax-errors buffer to global to avoid gcc optimization

On 09/15/2016 06:18 PM, Elliott, Robert (Persistent Memory) wrote: > > >> -Original Message- >> From: Linux-nvdimm [mailto:linux-nvdimm-boun...@lists.01.org] On >> Behalf Of Dave Jiang >> Sent: Thursday, September 15, 2016 5:28 PM >> To: vishal.l

[PATCH] libnvdimm: allow legacy (e820) pmem region to clear bad blocks

need to just return as handled and allow the bad blocks to be cleared rather than fail. Signed-off-by: Dave Jiang <dave.ji...@intel.com> --- drivers/nvdimm/bus.c |6 +- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 4

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