It's defined on every single supported kernel, so there is actually no need
for this define at all.
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
The data->size field can be initialized to a lower value than bio->bi_vcnt,
if the bio is split. The bio_for_each_segment then iterates based on the original
indexes and the mismatch eventually causes a BUG_ON.
Fixes#714
Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Since commit 8b3238cabd50e27 in linux kernel removed blk_bidi_rq() marco, it
has to be wrapped in CAS `configure` script
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
To avoid logging the same message each time _cache_mngt_create_exported_object()
is called, print error message within it.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
To avoid logging the same message each time block_dev_activate_exported_object()
is called, print error message within it.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
CAS does not need atomic alocations virtually anywhere. GFP_NOIO
should be sufficient in IO path. When allocation buffers during
module initialization use GFP_KERNEL.
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
Currently Open-CAS uses single queue block interface,
which is removed in kernel in version 5.0.
From this moment on Open-CAS supports only blk-mq,
and single queue is not supported any longer.
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
In case of error during cache stop exported object is not being restored after destroying.
This may result in bug in case of calling stop once more.
This commit fixes this issue - exported objects are restored.
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
Functions and macros dependent on different kernel versions are now generated
before compilation basing on current kernel capabilities instead of hardcoding
them for specific kernels.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
