Hi Greg, please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
tags/libnvdimm-fixes-4.19-rc8
...to receive (2) urgent dax fixes for 4.19-rc8. They have appeared in
a -next release.
However, note that commit d7782145e1ad ("filesystem-dax: Fix
dax_layout_busy_page() livelock") is immediately replaced with the
Xarray conversion targeting 4.20, so d7782145e1ad is the backport
suitable fix for the livelock for v4.19 and earlier.
Please pull, thanks!
---
The following changes since commit 17b57b1883c1285f3d0dc2266e8f79286a7bef38:
Linux 4.19-rc6 (2018-09-30 07:15:35 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
tags/libnvdimm-fixes-4.19-rc8
for you to fetch changes up to 4628a64591e6cee181237060961e98c615c33966:
mm: Preserve _PAGE_DEVMAP across mprotect() calls (2018-10-09 11:44:58 -0700)
----------------------------------------------------------------
libnvdimm/dax 4.19-rc8
* Fix a livelock in dax_layout_busy_page() present since v4.18. The
lockup triggers when truncating an actively mapped huge page out of a
mapping pinned for direct-I/O.
* Fix mprotect() clobbers of _PAGE_DEVMAP. Broken since v4.5 mprotect()
clears this flag that is needed to communicate the liveness of device
pages to the get_user_pages() path.
----------------------------------------------------------------
Dan Williams (1):
filesystem-dax: Fix dax_layout_busy_page() livelock
Jan Kara (1):
mm: Preserve _PAGE_DEVMAP across mprotect() calls
arch/powerpc/include/asm/book3s/64/pgtable.h | 4 ++--
arch/x86/include/asm/pgtable_types.h | 2 +-
fs/dax.c | 13 +++++++++++--
3 files changed, 14 insertions(+), 5 deletions(-)
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