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| author | Dan Williams <dan.j.williams@intel.com> | 2018-02-01 21:27:22 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2018-02-01 21:27:22 -0800 |
| commit | f2ba5a5baecf795c2150826bd0c95fc3f7f3d226 (patch) | |
| tree | 50d1a64e01d13f5701b48da8a4a76b7fbc7d410a /include/uapi | |
| parent | 0fb5c8df609eaca3cb7c24e7f91470f8dd5984ec (diff) | |
| download | linux-f2ba5a5baecf795c2150826bd0c95fc3f7f3d226.tar.bz2 | |
libnvdimm, namespace: make min namespace size 4K
The arbitrary 4MB minimum namespace size turns out to be too large for
some environments. Quoting Cheng-mean Liu:
In the case of emulated NVDIMM devices in the VM environment, there
are scenarios that NVDIMM device with much smaller sizes are
desired, for example, we might use a single enumerated NVDIMM DAX
device for representing each container layer, which in some cases
could be just a few KBs size.
PAGE_SIZE is the minimum where we can still support DAX of at least
a single page.
Cc: Matthew Wilcox <willy@infradead.org>
Reported-by: Cheng-mean Liu <soccerl@microsoft.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/ndctl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h index 30ef1236aafa..7e27070b9440 100644 --- a/include/uapi/linux/ndctl.h +++ b/include/uapi/linux/ndctl.h @@ -209,7 +209,7 @@ enum nd_driver_flags { }; enum { - ND_MIN_NAMESPACE_SIZE = 0x00400000, + ND_MIN_NAMESPACE_SIZE = PAGE_SIZE, }; enum ars_masks { |