Currently dax_mapping_entry_mkclean() fails to clean and write protect the pmd_t of a DAX PMD entry during an *sync operation. This can result in data loss, as detailed in patch 2.
This series is based on Dan's "libnvdimm-pending" branch, which is the current home for Jan's "dax: Page invalidation fixes" series. You can find a working tree here: https://git.kernel.org/cgit/linux/kernel/git/zwisler/linux.git/log/?h=dax_pmd_clean Ross Zwisler (2): mm: add follow_pte_pmd() dax: wrprotect pmd_t in dax_mapping_entry_mkclean fs/dax.c | 51 ++++++++++++++++++++++++++++++++++++--------------- include/linux/mm.h | 4 ++-- mm/memory.c | 41 ++++++++++++++++++++++++++++++++--------- 3 files changed, 70 insertions(+), 26 deletions(-) -- 2.7.4
