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Is there a way to pack and store arbitrary data in the kernel, or do I
need to roll my own?
As a simple example, let's say I wanted to store 8 elements. Assume
PAGE_SIZE is 4. If I store these individually, their size and use is:
ELEM SIZE PAGES USE
[A.] 4 1 4
[B...] 6 2 8
[C] 3 1 4
[D....] 7 2 8
[E] 3 1 4
[F.] 4 1 4
[G......] 9 3 12
[H.....] 8 2 8
TOTAL 44 13 52
2 excess pages, 8 excess units of memory wasted.
Now let's say I used groups of 4 pages:
E S P U
[A.][H.....] 12 4 16
[B...][C][D....] 16 4 16
[E][F.][G......] 16 4 16
44 12 48
1 excess pages, 4 units wasted memory.
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