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0b277961f4
linux/drivers/nvdimm
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Dan Williams 0b277961f4 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 <jack@suse.cz>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2017-06-29 09:29:50 -07:00
..
blk.c libnvdimm: add an atomic vs process context flag to rw_bytes 2017-05-10 21:46:22 -07:00
btt_devs.c libnvdimm: add an atomic vs process context flag to rw_bytes 2017-05-10 21:46:22 -07:00
btt.c libnvdimm, btt: ensure that initializing metadata clears poison 2017-05-10 21:46:22 -07:00
btt.h libnvdimm, btt: consolidate arena validation 2015-08-14 13:43:04 -04:00
bus.c libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
claim.c x86, libnvdimm, pmem: remove global pmem api 2017-06-27 16:29:54 -07:00
core.c libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
dax_devs.c libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
dimm_devs.c libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
dimm.c libnvdimm: handle locked label storage areas 2017-05-04 15:41:39 -07:00
e820.c libnvdimm, e820: use module_platform_driver 2016-12-05 08:52:21 -08:00
Kconfig pmem: add dax_operations support 2017-04-19 15:14:35 -07:00
label.c nvdimm: use the right length of "pmem" 2016-11-11 20:37:42 -08:00
label.h libnvdimm: write blk label set 2015-06-24 21:24:10 -04:00
Makefile libnvdimm, dax: introduce device-dax infrastructure 2016-05-09 15:35:42 -07:00
namespace_devs.c libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
nd-core.h libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
nd.h libnvdimm: add an atomic vs process context flag to rw_bytes 2017-05-10 21:46:22 -07:00
pfn_devs.c libnvdimm, nfit: enable support for volatile ranges 2017-06-27 16:44:13 -07:00
pfn.h libnvdimm, dax: autodetect support 2016-05-20 22:02:57 -07:00
pmem.c libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region 2017-06-29 09:29:50 -07:00
pmem.h x86, libnvdimm, pmem: remove global pmem api 2017-06-27 16:29:54 -07:00
region_devs.c libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region 2017-06-29 09:29:50 -07:00
region.c libnvdimm: rework region badblocks clearing 2017-04-29 15:24:03 -07:00