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| author | Pankaj Gupta <pagupta@redhat.com> | 2019-07-05 17:03:26 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2019-07-06 01:19:10 +0300 |
| commit | 32de1484648a837db5dea0a7007fe7136804e392 (patch) | |
| tree | 268cebd1e247ac532948188ceab4bed7c903b18c /fs/ext4/file.c | |
| parent | 2e9ee0955d3c2d3db56aa02ba6f948ba35d5e9c1 (diff) | |
| download | linux-32de1484648a837db5dea0a7007fe7136804e392.tar.xz | |
dax: check synchronous mapping is supported
This patch introduces 'daxdev_mapping_supported' helper
which checks if 'MAP_SYNC' is supported with filesystem
mapping. It also checks if corresponding dax_device is
synchronous. Virtio pmem device is asynchronous and
does not not support VM_SYNC.
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'fs/ext4/file.c')
0 files changed, 0 insertions, 0 deletions