pmem2_config_set_length() - set length in the pmem2_config structure
#include <libpmem2.h> struct pmem2_config; int pmem2_config_set_length(struct pmem2_config *config, size_t length);
The pmem2_config_set_length() function configures the length which will be used for mapping. *config should be already initialized, please see pmem2_config_new(3) for details. The \length must be a multiple of the alignment required for the data source which will be used for mapping alongside the config. To retrieve the alignment required for specific instance of pmem2_source* use pmem2_source_alignment(3). By default, the length is equal to the size of the file that is being mapped.
The pmem2_config_set_length() function always returns 0.
libpmem2(7), pmem2_map_new(3), pmem2_source_alignment(3), pmem2_config_new(3), sysconf(3) and https://pmem.io
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