Change 'OCF_ERR_START_CACHE_FAIL' to 'OCF_ERR_NO_MEM' while CAS fails in case of memory lack on device.
Add new error code for case, when device doesn't satisfy CAS requirements - 'OCF_ERR_INVAL_CACHE_DEV'.
Use 'OCF_ERR_INVAL_CACHE_DEV' in code.
Update error code match in test.
closes#317 issue
Signed-off-by: Ostrokrzew <slawomir.jankowski@intel.com>
When loading cache metadata, it should be started with exactly the same name as
it was running previously. Otherwise load should fail and return newly added
error code.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
- Add cache trylock and read trylock functions.
- Introduce new error code -OCF_ERR_NO_LOCK.
- Change trylock functions in env to return this code in case of
lock contention.
[ENV CHANGES REQUIRED]
Following functions should return 0 on success or -OCF_ERR_NO_LOCK
in case of lock contention:
- env_mutex_trylock()
- env_rwsem_up_read_trylock()
- env_rwsem_up_write_trylock()
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
