diff options
| author | Dan Williams <[email protected]> | 2017-06-09 09:46:50 -0700 |
|---|---|---|
| committer | Dan Williams <[email protected]> | 2017-06-29 09:29:50 -0700 |
| commit | 0b277961f4484fb3f142caaa1dd1748cb0b2cbee (patch) | |
| tree | c3ba6190530a8732a64df8e2dba2c6028d36a2eb /include/linux/fpga/fpga-mgr.h | |
| parent | 6e0c90d691cd5d90569f5918ab03eb76c81f9c6e (diff) | |
libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region
The pmem driver attaches to both persistent and volatile memory ranges
advertised by the ACPI NFIT. When the region is volatile it is redundant
to spend cycles flushing caches at fsync(). Check if the hosting region
is volatile and do not set dax_write_cache() if it is.
Cc: Jan Kara <[email protected]>
Cc: Jeff Moyer <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Ross Zwisler <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
Diffstat (limited to 'include/linux/fpga/fpga-mgr.h')
0 files changed, 0 insertions, 0 deletions