lkml.org 
[lkml]   [2016]   [Dec]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] Write protect DAX PMDs in *sync path
Date
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

\
 
 \ /
  Last update: 2016-12-20 23:24    [W:0.052 / U:0.104 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site