On Wed, May 25, 2016 at 02:00:41PM -0400, Wenda Ni wrote: > The prototype is void kfree(const void *). > > As the input pointer is void *, how does the kernel know the size of memory to > be freed? There should be some metadata recorded under the hood, right? Yes there is. See the memory allocation code for the details. Same goes for the C language implementation of free(), look at any libc implementation for more details about that if you are curious, the basics are the same for within the kernel. thanks, greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
