diff options
| author |   Pankaj Gupta <pagupta@redhat.com> | 2019-07-05 19:33:24 +0530 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2019-07-05 15:19:10 -0700 |
| commit | fefc1d97fa4b5e016bbe15447dc3edcd9e1bcb9f (patch) | |
| tree | f18d110c2fdc771ca69ea6a83399f0c13f758664 /drivers/nvdimm/region_devs.c | |
| parent | virtio-pmem: Add virtio pmem driver (diff) | |
| download | linux-dev-fefc1d97fa4b5e016bbe15447dc3edcd9e1bcb9f.tar.xz linux-dev-fefc1d97fa4b5e016bbe15447dc3edcd9e1bcb9f.zip | |
libnvdimm: add dax_dev sync flag
This patch adds 'DAXDEV_SYNC' flag which is set
for nd_region doing synchronous flush. This later
is used to disable MAP_SYNC functionality for
ext4 & xfs filesystem for devices don't support
synchronous flush.
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/region_devs.c')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index eca2e62af134..56f2227f192a 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -1211,6 +1211,13 @@ int nvdimm_has_cache(struct nd_region *nd_region) } EXPORT_SYMBOL_GPL(nvdimm_has_cache); +bool is_nvdimm_sync(struct nd_region *nd_region) +{ + return is_nd_pmem(&nd_region->dev) && + !test_bit(ND_REGION_ASYNC, &nd_region->flags); +} +EXPORT_SYMBOL_GPL(is_nvdimm_sync); + struct conflict_context { struct nd_region *nd_region; resource_size_t start, size; |