This series reverts some recent changes to the locking scheme in DAX introduced
by these two commits:
commit 843172978bb9 ("dax: fix race between simultaneous faults")
commit 46c043ede471 ("mm: take i_mmap_lock in unmap_mapping_range() for DAX")
It also temporarily disables the newly added DAX PMD fault path because of a
deadlock. We are re-working the way that DAX does its locking for v4.4, so for
now just disable DAX PMD faults and fall back to PAGE_SIZE faults to make sure
we don't hit this deadlock.
Changes from v2:
- Temporarily disable the DAX PMD fault path while we re-work DAX locking for
v4.4.
Ross Zwisler (3):
Revert "mm: take i_mmap_lock in unmap_mapping_range() for DAX"
Revert "dax: fix race between simultaneous faults"
dax: temporarily disable DAX PMD fault path
fs/dax.c | 90 ++++++++++++++++++++++++++++---------------------------------
mm/memory.c | 2 ++
2 files changed, 43 insertions(+), 49 deletions(-)
--
2.1.0
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>