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libdm: document use of dm_free() with histogram bounds

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Bryn M. Reeves 2016-07-18 18:20:01 +01:00
parent da146ae9b9
commit 252952ff33
1 changed files with 4 additions and 0 deletions
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libdm/libdevmapper.h
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@ -805,6 +805,10 @@ int dm_stats_get_region_nr_histogram_bins(const struct dm_stats *dms,
* magnitude is one milisecond: attempting to use a histogram with a * magnitude is one milisecond: attempting to use a histogram with a
* boundary less than one milisecond when creating a region will cause * boundary less than one milisecond when creating a region will cause
* the region to be created with the precise_timestamps feature enabled. * the region to be created with the precise_timestamps feature enabled.
*
* On sucess a pointer to the struct dm_histogram representing the
* bounds values is returned, or NULL in the case of error. The returned
* pointer should be freed using dm_free() when no longer required.
*/ */
struct dm_histogram *dm_histogram_bounds_from_string(const char *bounds_str); struct dm_histogram *dm_histogram_bounds_from_string(const char *bounds_str);