diff options
| author | Alessio Balsini <[email protected]> | 2019-08-07 01:48:28 +0100 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2019-08-08 21:39:02 -0600 |
| commit | fdbe4eeeb1aac219b14f10c0ed31ae5d1123e9b8 (patch) | |
| tree | 4d0cbbd9751526c4350de20409e4cbf2402e78e9 /tools/perf/scripts/python/sctop.py | |
| parent | 79e178f4383a3a645f76bc2dd44c477b361c6a98 (diff) | |
loop: Add LOOP_SET_DIRECT_IO to compat ioctl
Enabling Direct I/O with loop devices helps reducing memory usage by
avoiding double caching. 32 bit applications running on 64 bits systems
are currently not able to request direct I/O because is missing from the
lo_compat_ioctl.
This patch fixes the compatibility issue mentioned above by exporting
LOOP_SET_DIRECT_IO as additional lo_compat_ioctl() entry.
The input argument for this ioctl is a single long converted to a 1-bit
boolean, so compatibility is preserved.
Cc: Jens Axboe <[email protected]>
Signed-off-by: Alessio Balsini <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions