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author | Dan Williams <dan.j.williams@intel.com> | 2016-06-02 05:48:15 +0200 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2016-07-12 01:16:03 +0200 |
commit | 7e267a8c790edfde9b697cbe944ee566f41219c3 (patch) | |
tree | 09133c8e81f5be702f649de096b5661419170418 /drivers/nvdimm/bus.c | |
parent | libnvdimm: cycle flush hints (diff) | |
download | linux-7e267a8c790edfde9b697cbe944ee566f41219c3.tar.xz linux-7e267a8c790edfde9b697cbe944ee566f41219c3.zip |
libnvdimm, pmem: use REQ_FUA, REQ_FLUSH for nvdimm_flush()
Given that nvdimm_flush() has higher overhead than wmb_pmem() (pointer
chasing through nd_region), and that we otherwise assume a platform has
ADR capability when flush hints are not present, move nvdimm_flush() to
REQ_FLUSH context.
Note that we still arrange for nvdimm_flush() to be called even in the
ADR case. We need at least once wmb() fence to push buffered writes in
the cpu out to the ADR protected domain.
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/bus.c')
0 files changed, 0 insertions, 0 deletions