回复：regression caused by patch 6180bb446ab624b9ab8bf201ed251ca87f07b413 ("dax: fix detection of dax support for non-persistent memory block devices")

Hi Andrian, Could you please to take a look? I am offline in the next two weeks. Thanks in advance. Coly Li 原始邮件 发件人： Mikulas Patocka 日期： 2020年9月14日周一 半夜11:48收件人： Coly Li , Dan Williams , Dave Jiang 抄送： Jan Kara , Vishal Verma , Adrian Huang , Ira Weiny , Mike Snitzer , Pankaj Gupt

Re: [PATCH v4 5/8] mm/memory_hotplug: MEMHP_MERGE_RESOURCE to specify merging of System RAM resources

On Fri, Sep 11, 2020 at 12:34:56PM +0200, David Hildenbrand wrote: >Some add_memory*() users add memory in small, contiguous memory blocks. >Examples include virtio-mem, hyper-v balloon, and the XEN balloon. > >This can quickly result in a lot of memory resources, whereby the actual >resource bound

Re: [PATCH v2 2/7] kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED

On Tue, Sep 08, 2020 at 10:10:07PM +0200, David Hildenbrand wrote: >IORESOURCE_MEM_DRIVER_MANAGED currently uses an unused PnP bit, which is >always set to 0 by hardware. This is far from beautiful (and confusing), >and the bit only applies to SYSRAM. So let's move it out of the >bus-specific (PnP)

Re: [PATCH v2 1/7] kernel/resource: make release_mem_region_adjustable() never fail

On Tue, Sep 08, 2020 at 10:10:06PM +0200, David Hildenbrand wrote: >Let's make sure splitting a resource on memory hotunplug will never fail. >This will become more relevant once we merge selected System RAM >resources - then, we'll trigger that case more often on memory hotunplug. > >In general, t

Re: [PATCH v2 1/7] kernel/resource: make release_mem_region_adjustable() never fail

On Tue, Sep 08, 2020 at 10:10:06PM +0200, David Hildenbrand wrote: >Let's make sure splitting a resource on memory hotunplug will never fail. >This will become more relevant once we merge selected System RAM >resources - then, we'll trigger that case more often on memory hotunplug. > >In general, t

Re: [PATCH v2] powerpc/papr_scm: Fix warning triggered by perf_stats_show()

On Sat, Sep 12, 2020 at 01:44:51PM +0530, Vaibhav Jain wrote: > A warning is reported by the kernel in case perf_stats_show() returns > an error code. The warning is of the form below: > > papr_scm ibm,persistent-memory:ibm,pmemory@4411: > Failed to query performance stats, Err:-10 >

regression caused by patch 6180bb446ab624b9ab8bf201ed251ca87f07b413 ("dax: fix detection of dax support for non-persistent memory block devices")

Hi The patch 6180bb446ab624b9ab8bf201ed251ca87f07b413 ("dax: fix detection of dax support for non-persistent memory block devices") causes crash when attempting to mount the ext4 filesystem on /dev/pmem0 ("mkfs.ext4 /dev/pmem0; mount -t ext4 /dev/pmem0 /mnt/test"). The device /dev/pmem0 is emu