Rework for RHEL8.5 compatibility to avoid potential bug of exiting queue
after IO completion on a different CPU.
Targeted RHEL kernel version corrected.
Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
This patch adds support for RHEL8.5 with kernel 4.18.0.348.2.1.el8 and
later.
Additional request queue operations added for these kernels.
Configure scripts added/updated.
Fixes#1278
Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
OCF cannot allocate request map bigger than 4MiB (due to kmalloc
limitations), thus we need to split bigger IOs into series smaller
ones to reduce request map size.
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
