From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Matthew Wilcox <willy@linux.intel.com>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>, Jan Kara <jack@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
linux-nvdimm@lists.01.org,
Matthew Wilcox <matthew.r.wilcox@intel.com>
Subject: [PATCH v4 0/2] Revert locking changes in DAX for v4.3
Date: Tue, 6 Oct 2015 16:28:47 -0600 [thread overview]
Message-ID: <1444170529-12814-1-git-send-email-ross.zwisler@linux.intel.com> (raw)
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")
Changes from v3:
- reduced the revert of 46c043ede471 in patch 1 so that we still drop the
mapping->i_mmap_rwsem before calling unmap_mapping_range(). This prevents
the deadlock in the __dax_pmd_fault() path so there is no longer a need to
temporarily disable DAX PMD faults.
Ross Zwisler (2):
Revert "mm: take i_mmap_lock in unmap_mapping_range() for DAX"
Revert "dax: fix race between simultaneous faults"
fs/dax.c | 70 +++++++++++++++++++++++++------------------------------------
mm/memory.c | 2 ++
2 files changed, 31 insertions(+), 41 deletions(-)
--
2.1.0
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next reply other threads:[~2015-10-06 22:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-06 22:28 Ross Zwisler [this message]
2015-10-06 22:28 ` [PATCH v4 1/2] Revert "mm: take i_mmap_lock in unmap_mapping_range() for DAX" Ross Zwisler
2015-10-07 16:19 ` Dan Williams
2015-10-07 21:39 ` Ross Zwisler
2015-10-06 22:28 ` [PATCH v4 2/2] Revert "dax: fix race between simultaneous faults" Ross Zwisler
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