[PATCH v4 2/2] Revert "dax: fix race between simultaneous faults"

2015-10-06 Thread Ross Zwisler
This reverts commit 843172978bb92997310d2f7fbc172ece423cfc02. The following two locking commits in the DAX code: commit 843172978bb9 ("dax: fix race between simultaneous faults") commit 46c043ede471 ("mm: take i_mmap_lock in unmap_mapping_range() for DAX") introduced a number of deadlocks and

[PATCH v4 2/2] Revert "dax: fix race between simultaneous faults"

2015-10-06 Thread Ross Zwisler
This reverts commit 843172978bb92997310d2f7fbc172ece423cfc02. The following two locking commits in the DAX code: commit 843172978bb9 ("dax: fix race between simultaneous faults") commit 46c043ede471 ("mm: take i_mmap_lock in unmap_mapping_range() for DAX") introduced a number of deadlocks and