Messages in this thread | | | Subject | [PATCH 0/5] device-dax and huge-page dax fixes for 4.8-rc6 | From | Dan Williams <> | Date | Tue, 06 Sep 2016 09:49:20 -0700 |
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Kai and Toshi reported poor performance with huge-page dax mappings and while debugging a few more bugs were discovered in the device-dax driver and mm. The following fixes target 4.8-rc6 and are tagged for -stable:
- device-dax incorrectly translates the file offset to a physical resource address
- show_smap() crashes on huge-page dax mappings
- huge-page dax mappings are inadvertently being marked as _PAGE_CACHE_MODE_UC instead of _PAGE_CACHE_MODE_WB
I would like to take this set through nvdimm.git with acks from mm folks as there is 4.9 device-dax development that depends on these changes.
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Dan Williams (5): dax: fix mapping size check dax: fix offset to physical address translation mm: fix show_smap() for zone_device-pmd ranges mm: fix cache mode of dax pmd mappings mm: cleanup pfn_t usage in track_pfn_insert()
arch/x86/mm/pat.c | 4 ++-- drivers/dax/dax.c | 12 +++++++----- fs/proc/task_mmu.c | 2 ++ include/asm-generic/pgtable.h | 4 ++-- mm/huge_memory.c | 6 ++---- mm/memory.c | 2 +- 6 files changed, 16 insertions(+), 14 deletions(-)
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