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Groups > linux.kernel > #1239939
| From | Ross Zwisler <ross.zwisler@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 0/3] Revert locking changes in DAX for v4.3 |
| Date | 2015-10-05 22:40 +0200 |
| Message-ID | <qgkIa-1ks-7@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
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
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[PATCH v3 0/3] Revert locking changes in DAX for v4.3 Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-10-05 22:40 +0200 [PATCH v3 1/3] Revert "mm: take i_mmap_lock in unmap_mapping_range() for DAX" Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-10-05 22:40 +0200 [PATCH v3 2/3] Revert "dax: fix race between simultaneous faults" Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-10-05 22:40 +0200 [PATCH v3 3/3] dax: temporarily disable DAX PMD fault path Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-10-05 22:40 +0200
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