Deleting an element from a free_list?

[Timur Tabi <ttabi@interactivesi.com>]

free_area[x].free_list.next points to the head of a linked list of free blocks
of order x (2^x contiguous pages).  If I simply remove one element from one of
these linked lists, using function list_del() in list.h, does that effectively
remove that block from the free list and hence prevent the kernel from
allocating those blocks of memory to anyone else?  This is assuming that I never
ever plan to "unallocate" those blocks of memory.  Will I need to also update
the corresponding mem_map_t structures by doing something like setting the usage
count to 1 or setting some bits in the flags field?



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Timur Tabi - ttabi@interactivesi.com
Interactive Silicon - http://www.interactivesi.com

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