diff options
| author | Ross Zwisler | 2017-01-11 01:57:21 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2017-01-11 03:31:54 +0100 |
| commit | 097963959594c5eccaba42510f7033f703211bda (patch) | |
| tree | ac2cac3fc4743830b2e8ff8ae13f6c3db9ef1ea1 /fs/dax.c | |
| parent | mm/thp/pagecache/collapse: free the pte page table on collapse for thp page c... (diff) | |
| download | kernel-qcow2-linux-097963959594c5eccaba42510f7033f703211bda.tar.gz kernel-qcow2-linux-097963959594c5eccaba42510f7033f703211bda.tar.xz kernel-qcow2-linux-097963959594c5eccaba42510f7033f703211bda.zip | |
mm: add follow_pte_pmd()
Patch series "Write protect DAX PMDs in *sync path".
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
This patch (of 2):
Similar to follow_pte(), follow_pte_pmd() allows either a PTE leaf or a
huge page PMD leaf to be found and returned.
Link: http://lkml.kernel.org/r/1482272586-21177-2-git-send-email-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Suggested-by: Dave Hansen <dave.hansen@intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/dax.c')
0 files changed, 0 insertions, 0 deletions