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| author | Dan Williams <dan.j.williams@intel.com> | 2016-11-16 17:00:38 (GMT) |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-11-16 17:00:38 (GMT) |
| commit | 4cb19355ea19995941ccaad115dbfac6b75215ca (patch) | |
| tree | ec4bbe77017ce2002940f2e9c9b502a7abf648d4 /arch | |
| parent | 6a84fb4b4e439a8ef0ce19ec7e7661ad76f655c9 (diff) | |
| download | linux-4cb19355ea19995941ccaad115dbfac6b75215ca.tar.xz | |
device-dax: fail all private mapping attempts
The device-dax implementation originally tried to be tricky and allow
private read-only mappings, but in the process allowed writable
MAP_PRIVATE + MAP_NORESERVE mappings. For simplicity and predictability
just fail all private mapping attempts since device-dax memory is
statically allocated and will never support overcommit.
Cc: <stable@vger.kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Fixes: dee410792419 ("/dev/dax, core: file operations and dax-mmap")
Reported-by: Pawel Lebioda <pawel.lebioda@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions