NAME¶

pmem2_config_set_required_store_granularity() - set a granularity in pmem2_config structure.

SYNOPSIS¶

#include <libpmem2.h>
enum pmem2_granularity {


    PMEM2_GRANULARITY_BYTE,


    PMEM2_GRANULARITY_CACHE_LINE,


    PMEM2_GRANULARITY_PAGE,
};
int pmem2_config_set_required_store_granularity(struct pmem2_config *cfg,


        enum pmem2_granularity g);
    

DESCRIPTION¶

The pmem2_config_set_required_store_granularity() sets a maximum permitted granularity g requested by user in the pmem2_config structure.

Granularity must be one of the following values:

•

PMEM2_GRANULARITY_BYTE

•

PMEM2_GRANULARITY_CACHE_LINE

•

PMEM2_GRANULARITY_PAGE

A description of the granularity concept can be found in libpmem2(7) manpage.

RETURN VALUE¶

The pmem2_config_set_required_store_granularity() function returns 0 on success or a negative error code on failure.

ERRORS¶

The pmem2_config_set_required_store_granularity() can fail with the following errors:

•

PMEM2_E_GRANULARITY_NOT_SUPPORTED - granularity g is not a valid value.

SEE ALSO¶

pmem2_config_new(3), libpmem2(7) and <https://pmem.io>