yf13 commented on PR #12041:
URL: https://github.com/apache/nuttx/pull/12041#issuecomment-2062829663

   > tthe unit of mmap is page size, why do we need byte unit?
   
   This helper function is for device drivers to use, where using byte unit is  
more natural. The "mmap()" function defined in <sys/mman.h> is also using byte 
unit for length parameter. using byte unit is more convenient for the callers.
   
   


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